chore: 不再跟踪 embed_static/static/spa 构建产物

SPA 由 Vite 输出至 embed_static，发布前通过 build 脚本构建即可。 Co-authored-by: Cursor <cursoragent@cursor.com>
支持板块图标与主题色自定义，并优化列表加载与未保存离开提示。
2026-06-29 02:41:32 +08:00 · 2026-06-28 17:13:32 +08:00 · 2026-06-26 05:27:06 +08:00 · 2026-06-26 05:26:07 +08:00 · 2026-06-16 06:16:54 +08:00 · 2026-06-16 06:11:33 +08:00
121 changed files with 10219 additions and 1728 deletions
--- a/.cursor/rules/build-scripts.mdc
+++ b/.cursor/rules/build-scripts.mdc
@@ -0,0 +1,36 @@
+---
+description: 编译与构建脚本约定（Windows build.bat/ps1、Makefile、跨平台同步）
+alwaysApply: true
+---
+
+# 编译与构建脚本
+
+Go 单二进制 + `go:embed` 前端；产物在 `dist/`。
+
+## 运行编译（优先用封装命令，不要猜命令）
+
+| 平台 | 命令 |
+|------|------|
+| Windows | `build.bat` 或 `build.bat -Target <target>` |
+| Linux / macOS | `make` 或 `make <target>` |
+
+**不要**在 Windows 上直接运行 `make`（系统自带多为 Embarcadero MAKE，不兼容本项目 Makefile）。
+
+Windows 上**不要**让用户直接 `.\build.ps1`（默认 ExecutionPolicy 会拦截）；应通过 `build.bat`（内部 `-ExecutionPolicy Bypass`）调用。
+
+常用 target：`build`（默认）、`dev`、`run`、`frontend`、`clean`、`build-all`、`build-windows`、`build-linux`、`tidy`、`help`。
+
+## 修改构建脚本时的约定
+
+1. **双轨同步**：`build.ps1` 与 `Makefile` 目标与行为保持一致；改其一须同步另一份。
+2. **`build.bat` 仅用 ASCII 注释**：`.bat` 会被 cmd 按 GBK 解析，UTF-8 中文注释会导致整行乱码、`powershell` 无法执行。
+3. **`build.ps1` 可用 UTF-8**：由 PowerShell 执行，中文注释无妨。
+4. **构建顺序**：先 `frontend` 内 `npm run build`，再 `go build -trimpath -ldflags "-s -w -X main.version=..." -o dist/jiang13 ./cmd/jiang13`。
+5. **入口包**：`./cmd/jiang13`；Windows 产物带 `.exe`。
+
+## 新增 target 检查清单
+
+- [ ] `build.ps1` 的 `ValidateSet` 与 `switch` 分支
+- [ ] `Makefile` 对应 `.PHONY` 与 recipe
+- [ ] `build.bat -Target help` 说明（help 输出在 ps1 内）
+- [ ] README「快速开始」如需对外暴露再更新
--- a/.gitattributes
+++ b/.gitattributes
@@ -0,0 +1,17 @@
+# 跨平台行尾：仓库内统一 LF，避免 Windows autocrlf 造成「假 modified」
+* text=auto eol=lf
+
+# Windows 批处理在 cmd 下需要 CRLF
+*.bat text eol=crlf
+*.cmd text eol=crlf
+
+# 二进制
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.webp binary
+*.woff binary
+*.woff2 binary
+*.exe binary
--- a/.gitea/ISSUE_TEMPLATE/bug_report.yaml
+++ b/.gitea/ISSUE_TEMPLATE/bug_report.yaml
@@ -0,0 +1,56 @@
+name: 缺陷报告
+about: 报告一个可复现的问题
+title: "[Bug] "
+labels:
+  - bug
+body:
+  - type: markdown
+    attributes:
+      value: |
+        感谢反馈！请尽量提供复现步骤，方便我们定位问题。
+  - type: textarea
+    id: description
+    attributes:
+      label: 问题描述
+      description: 简要说明发生了什么
+      placeholder: 评论回复换行后，页面上显示为一行…
+    validations:
+      required: true
+  - type: textarea
+    id: steps
+    attributes:
+      label: 复现步骤
+      placeholder: |
+        1. 打开帖子详情页
+        2. 在评论框输入多行文字
+        3. 点击发送
+        4. 观察到换行丢失
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: 期望行为
+    validations:
+      required: true
+  - type: textarea
+    id: actual
+    attributes:
+      label: 实际行为
+    validations:
+      required: true
+  - type: input
+    id: version
+    attributes:
+      label: 版本 / 提交
+      placeholder: main @ abc1234 或 v1.0.0
+  - type: input
+    id: environment
+    attributes:
+      label: 环境
+      placeholder: Windows 11 / Chrome 125 / Go 1.26
+  - type: textarea
+    id: screenshots
+    attributes:
+      label: 截图或日志
+      description: 可粘贴图片或相关日志
--- a/.gitea/ISSUE_TEMPLATE/feature_request.yaml
+++ b/.gitea/ISSUE_TEMPLATE/feature_request.yaml
@@ -0,0 +1,44 @@
+name: 功能建议
+about: 提出新功能或改进现有体验
+title: "[Feature] "
+labels:
+  - enhancement
+body:
+  - type: markdown
+    attributes:
+      value: |
+        欢迎提出想法！请先搜索已有 Issue，避免重复。
+  - type: textarea
+    id: problem
+    attributes:
+      label: 要解决什么问题？
+      description: 从用户场景出发描述痛点
+      placeholder: 管理员在 React 前台无法置顶帖子，必须切到旧版后台…
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: 期望的方案
+      description: 你心目中的实现方式（可简略）
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: 备选方案
+      description: 如有其他思路可一并说明
+  - type: dropdown
+    id: area
+    attributes:
+      label: 涉及模块
+      options:
+        - 前台 UI/UX
+        - 管理后台
+        - 评论系统
+        - 帖子 / 板块
+        - 认证 / 权限
+        - 部署 / 构建
+        - 其他
+    validations:
+      required: true
--- a/.gitignore
+++ b/.gitignore
@@ -2,8 +2,10 @@
 /data/

 # 前端依赖与构建缓存
+/node_modules/
 /frontend/node_modules/
 /frontend/dist/
+/embed_static/static/spa/

 # Go 编译产物
 /dist/
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -0,0 +1,48 @@
+# 参与贡献
+
+感谢你对姜十三论坛的关注！这是一个开源项目，欢迎提交 Issue 和 Pull Request。
+
+## 开发环境
+
+**要求：** Go 1.26+、Node.js 18+
+
+```powershell
+# Windows：一键启动后端 + 前端热更新
+.\build.ps1 -Target dev
+# 浏览器访问 http://localhost:5173
+```
+
+```bash
+# Linux / macOS
+make dev
+```
+
+## 提交规范
+
+- 一个 PR 只做一件事，保持 diff 小而清晰
+- 前端改动请确认浅色 / 暗色主题下都正常
+- 涉及 UI 变更时，建议在 PR 中附上截图
+
+## 完整构建
+
+发布单二进制前需先构建前端并 embed：
+
+```powershell
+.\build.ps1          # Windows
+make build           # Linux / macOS
+```
+
+## 报告问题
+
+在 [Issues](https://git.iioio.com/freefire/jiang13-forum/issues) 中描述（也可使用仓库自带的 Issue 模板）：
+
+1. 复现步骤
+2. 期望行为 vs 实际行为
+3. 环境信息（系统、浏览器、Go/Node 版本）
+4. 截图或日志（如有）
+
+已知问题与计划功能见 [ROADMAP.md](../ROADMAP.md)。
+
+## 行为准则
+
+请保持友善、尊重他人。骚扰、歧视或恶意行为不被容忍。
--- a/README.md
+++ b/README.md
@@ -1,68 +1,135 @@
+<div align="center">
+
 # 姜十三论坛 Jiang13 Forum

-轻量自用论坛系统，面向小圈子内部交流。与 Gitea 相同，编译为**单个独立 Go 二进制**，前端静态资源 embed 内嵌，内置 SQLite，开箱即用。
+**轻量 · 好看 · 单文件部署的现代化论坛**

-## 项目目录结构
+面向小圈子内部交流，编译为单个 Go 二进制，前端 SPA 内嵌，内置 SQLite，开箱即用。

-```
-js13-forum/
-├── cmd/jiang13/main.go          # 程序入口
-├── config/config.go             # 命令行参数与配置
-├── model/
-│   ├── models.go                # GORM 模型定义
-│   └── db.go                    # 数据库初始化与自动迁移
-├── service/                     # 业务逻辑层
-│   ├── auth.go                  # 注册/登录/JWT
-│   ├── user.go                  # 用户资料/头像
-│   ├── board.go                 # 板块 CRUD
-│   ├── post.go                  # 帖子/点赞/收藏
-│   ├── comment.go               # 楼层评论
-│   ├── backup.go                # SQLite 备份
-│   ├── ratelimit.go             # 访问限流
-│   └── common.go                # 敏感词过滤等
-├── handler/
-│   ├── handlers.go              # 前台页面与 API
-│   └── admin.go                 # 后台管理
-├── middleware/auth.go           # JWT 鉴权与限流中间件
-├── router/router.go             # 路由注册
-├── embed_static/
-│   ├── embed.go                 # go:embed 声明
-│   ├── static/css/style.css     # 内嵌 CSS
-│   ├── static/js/app.js         # 内嵌 JS
-│   └── templates/               # 内嵌 HTML 模板
-├── go.mod
-├── Makefile
-└── README.md
-```
+<br>
+
+[![License: MIT](https://img.shields.io/badge/License-MIT-18a058?style=flat-square)](LICENSE)
+[![Go](https://img.shields.io/badge/Go-1.26-00ADD8?style=flat-square&logo=go&logoColor=white)](go.mod)
+[![React](https://img.shields.io/badge/React-18-61DAFB?style=flat-square&logo=react&logoColor=white)](frontend/package.json)
+[![SQLite](https://img.shields.io/badge/SQLite-内置-003B57?style=flat-square&logo=sqlite&logoColor=white)](#)
+
+[快速开始](#-快速开始) ·
+[界面预览](#-界面预览) ·
+[功能亮点](#-功能亮点) ·
+[路线图](ROADMAP.md) ·
+[参与贡献](CONTRIBUTING.md)
+
+<br>
+
+<img src="docs/screenshots/home-light.png" alt="姜十三论坛首页 - 浅色主题三栏布局" width="92%">
+
+<sub>浅色主题 · 三栏布局 · Feed 排序 · 虚拟滚动帖列表</sub>
+
+<br>
+
+> **开发状态：** 项目积极开发中。管理后台已统一为 React SPA（`/admin`），欢迎参与共建。  
+> 查看 [路线图 ROADMAP.md](ROADMAP.md) · [Issues 反馈](https://git.iioio.com/freefire/jiang13-forum/issues)
+
+</div>
+
+---
+
+## 界面预览
+
+> 论坛用户第一眼看到的是界面。姜十三论坛采用清新绿色主题、高密度信息布局，兼顾桌面与移动端体验。
+
+<table>
+  <tr>
+    <td width="50%" align="center">
+      <img src="docs/screenshots/home-light.png" alt="浅色主题首页" width="100%">
+      <br><b>浅色主题</b><br>
+      <sub>左栏板块导航 · Feed 排序切换 · 右栏热门/动态/在线</sub>
+    </td>
+    <td width="50%" align="center">
+      <img src="docs/screenshots/home-dark.png" alt="暗色主题首页" width="100%">
+      <br><b>暗色主题</b><br>
+      <sub>一键切换 · 护眼阅读 · 全局色彩自适应</sub>
+    </td>
+  </tr>
+  <tr>
+    <td width="50%" align="center">
+      <img src="docs/screenshots/post-detail.png" alt="帖子详情页" width="100%">
+      <br><b>帖子详情</b><br>
+      <sub>TipTap 富文本渲染 · 标签展示 · 点赞收藏互动</sub>
+    </td>
+    <td width="50%" align="center">
+      <img src="docs/screenshots/mobile-home.png" alt="移动端首页" width="280">
+      <br><b>移动端适配</b><br>
+      <sub>板块快捷筛选 · Feed 排序 · 触控友好列表</sub>
+    </td>
+  </tr>
+</table>
+
+<p align="center">
+  <img src="docs/screenshots/compose.png" alt="发帖页" width="360">
+  <br><b>发帖</b> — 板块胶囊选择 · TipTap 工具栏 · 本地上传图片
+</p>
+
+---
+
+## 功能亮点
+
+### 界面与交互
+
+| 特性 | 说明 |
+|------|------|
+| **三栏布局** | 左栏板块菜单（可折叠）+ 中间虚拟滚动帖列表 + 右栏热门/通知/在线 |
+| **虚拟滚动** | `@tanstack/react-virtual` 驱动帖列表与楼层回复，长列表依然流畅 |
+| **帖子排序** | 最新发帖 / 最新回复 / 热门讨论，一键切换 Feed 排序 |
+| **主题切换** | 浅色 / 暗色一键切换，跟随 `prefers-color-scheme` 与本地记忆 |
+| **响应式** | 平板 / 手机自动收起侧栏，搜索、发帖、登录触手可及 |
+| **高密度排版** | V2EX / NGA 风格信息密度，一屏浏览更多内容 |
+
+### 社区功能
+
+- 用户注册 / 登录（bcrypt + JWT Cookie）
+- 普通用户 / 管理员两级权限，**首个注册用户自动成为管理员**
+- 板块管理、发帖、TipTap 富文本编辑、正文图片本地上传、标签、置顶
+- 帖子修订历史：编辑后保留版本记录，支持 diff 对比查看
+- 可配置编辑时限：管理员设定普通用户修改帖子的有效窗口
+- 楼层式评论，支持回复指定楼层、@ 高亮、引用回复
+- 点赞、收藏、热门帖、最新动态
+- 管理员后台：删帖、删评论、禁言、论坛参数配置、敏感词管理、SQLite 一键备份
+- 内置敏感词过滤、发帖 / 评论 / 注册 / 登录限流（后台可配）
+
+### 部署体验
+
+- **单二进制部署** — 与 Gitea 同款 `go:embed` 打包，无需 Nginx 反代静态资源
+- **零依赖数据库** — SQLite 内建，数据目录 `--data` 一处管理
+- **跨平台** — Windows / Linux / macOS 一键编译
+
+---

 ## 快速开始

 ### 1. 编译

-**Windows（推荐，无需 GNU Make）：**
+**Windows（推荐）：**

 ```powershell
-# PowerShell
 .\build.ps1
-
-# 或双击 / cmd
-build.bat
+# 或双击 build.bat
 ```

-**Linux / macOS（需 GNU Make）：**
+**Linux / macOS：**

 ```bash
 make build
 ```

-**手动分步（全平台通用）：**
+**手动分步（全平台）：**

 ```bash
 cd frontend && npm install && npm run build
-cd .. && go build -trimpath -ldflags "-s -w" -o dist/jiang13.exe ./cmd/jiang13
+cd .. && go build -trimpath -ldflags "-s -w" -o dist/jiang13 ./cmd/jiang13
 ```

-> Windows 自带的 `make` 通常是 Embarcadero MAKE，**不能**识别本项目 Makefile。请用 `.\build.ps1` 或安装 GNU Make（`choco install make`）后再用 `make build`。
+> Windows 自带的 `make` 通常是 Embarcadero MAKE，不能识别本项目 Makefile。请用 `.\build.ps1` 或安装 GNU Make 后再用 `make build`。

 跨平台编译：

@@ -84,104 +151,109 @@ cd .. && go build -trimpath -ldflags "-s -w" -o dist/jiang13.exe ./cmd/jiang13

 ### 3. 首次使用

-1. 浏览器打开 http://localhost:3000/register 注册账号
-2. **第一个注册的用户自动成为管理员**，无需额外命令
-3. 登录后可访问 http://localhost:3000/admin/dashboard 进入后台
+1. 浏览器打开 `http://localhost:3000/register` 注册账号
+2. **第一个注册的用户自动成为管理员**
+3. 登录后访问 `http://localhost:3000/admin/dashboard` 进入后台

-## 启动参数
+### 启动参数

 | 参数 | 默认值 | 说明 |
 |------|--------|------|
-| `--port` | 3000 | HTTP 监听端口 |
-| `--data` | ./data | 数据目录（SQLite、上传、日志） |
-| `--jwt-secret` | 自动生成 | JWT 签名密钥（留空则自动生成并持久化到 data/.jwt_secret） |
+| `--port` | `3000` | HTTP 监听端口 |
+| `--data` | `./data` | 数据目录（SQLite、上传、日志） |
+| `--jwt-secret` | 自动生成 | JWT 签名密钥（留空则持久化到 `data/.jwt_secret`） |

-## 数据目录说明
+---
+
+## 技术栈
+
+| 层级 | 技术 |
+|------|------|
+| **后端** | Go 1.26 · Gin · GORM · SQLite |
+| **前端** | React 18 · TipTap · Radix UI · Tailwind CSS · TanStack Virtual |
+| **构建** | Vite → `go:embed` 内嵌 SPA，单二进制发布 |
+| **认证** | bcrypt · JWT Cookie |
+
+---
+
+## 前端开发
+
+日常改前端**不需要**重新 `npm run build` 或 `go build`，Vite 开发服务器支持秒级热更新（HMR，热模块替换）：
+
+```powershell
+.\build.ps1 -Target dev    # Windows
+make dev                   # Linux / macOS
+```
+
+浏览器访问 `http://localhost:5173`，API 自动代理到 `http://localhost:3000`。
+
+**何时需要完整构建：**
+
+- 修改 Go 代码、HTML 模板、embed 静态资源 → `go build` / `make build`
+- 发布单二进制前 → `npm run build` + `make build`
+- 更新 README 界面截图 → 启动服务后执行 `node scripts/capture-screenshots.mjs`
+
+> 直接访问 `:3000` 看到的是上次 build 嵌入的前端；开发时请用 `:5173`。
+
+---
+
+## 项目结构
+
+```
+jiang13-forum/
+├── cmd/jiang13/           # 程序入口
+├── config/                # 命令行参数与配置
+├── model/                 # GORM 模型与数据库迁移
+├── service/               # 业务逻辑（认证、帖子、评论…）
+├── handler/               # HTTP 处理器（前台 + 后台）
+├── middleware/            # JWT 鉴权、在线状态
+├── router/                # 路由注册
+├── embed_static/          # go:embed 内嵌的 SPA 与模板
+├── frontend/              # React 源码（Vite 构建）
+├── docs/screenshots/      # README 界面截图
+├── docs/issue-templates.md # Issue 预填模板
+├── ROADMAP.md             # 路线图与已知问题
+└── scripts/               # 开发辅助脚本
+```
+
+---
+
+## 数据目录

 ```
 data/
 ├── jiang13.db              # SQLite 主数据库
 ├── jiang13.log             # 运行日志
-├── filter_words.txt        # 敏感词配置（可编辑）
+├── filter_words.txt        # 敏感词配置
 ├── .jwt_secret             # JWT 密钥（自动生成）
-├── uploads/avatars/        # 用户头像（运行时写入，非 embed）
-└── jiang13_backup_*.db     # 后台导出的备份文件
+├── uploads/avatars/        # 用户头像
+├── uploads/posts/          # 帖子正文图片
+└── jiang13_backup_*.db     # 后台导出的备份
 ```

-## 修改前端并重新打包（Gitea 同款流程）
+---

-1. 编辑 `embed_static/templates/` 下的 HTML 模板
-2. 编辑 `embed_static/static/css/` 或 `static/js/` 下的静态资源
-3. 重新编译：`make build`
-4. 替换旧二进制，重启服务
+## 开发状态

-前端资源通过 `//go:embed` 编译进二进制，**运行时不需要单独的前端文件夹**。只有用户上传的头像保存在 `--data` 目录。
+项目**积极开发中**，作为论坛产品功能尚未完善，欢迎参与共建。

-```go
-// embed_static/embed.go
-//go:embed static/*
-var staticFS embed.FS
-
-//go:embed templates/*
-var templatesFS embed.FS
-```
-
-## 功能概览
-
- 用户注册/登录（bcrypt + JWT Cookie）
- 普通用户 / 管理员两级权限
- 板块管理、发帖、富文本 HTML、标签、置顶
- 楼层式评论，支持回复指定楼层
- 点赞、收藏
- 管理员：删帖、删评论、禁言、SQLite 备份
- 内置敏感词过滤、发帖/评论限流
-
-## 技术栈
-
- **后端**：Go 1.26 + Gin + GORM + SQLite
- **前端**：React 18 + Arco Design + TanStack Virtual（虚拟滚动）
- **打包**：Vite 构建 → `go:embed` 内嵌 SPA，与 Gitea 同款单二进制
-
-## 前端开发（热更新 HMR）
-
-日常改前端**不需要**重新 `npm run build` 或 `go build`，用 Vite 开发服务器即可秒级热更新：
-
-```bash
-# 一键启动：Go 后端 + Vite 热更新（推荐）
-.\build.ps1 -Target dev          # Windows
-make dev                         # Linux / macOS（需 GNU Make）
-
-# 浏览器访问 http://localhost:5173
-# API 自动代理到 http://localhost:3000
-```
-
-也可开两个终端分别启动：
-
-```bash
-# 终端 1：仅后端
-.\build.ps1 -Target run          # 或 make run
-
-# 终端 2：仅前端热更新
-cd frontend && npm install && npm run dev
-```
-
-**何时才需要完整构建：**
-
- 改 Go 代码、模板、embed 静态资源 → `go build` / `make build`
- 发布单二进制前 → `npm run build` + `make build`（前端产物写入 `embed_static/static/spa/` 后 embed 进二进制）
-
-> 若直接访问 `:3000`，看到的是**上次 build 嵌入**的前端，不会有热更新。开发时请用 `:5173`。
-
-### 前端特性（高密度 V2EX/NGA 风格）
-
-| 特性 | 实现 |
+| 类型 | 示例 |
 |------|------|
-| 三栏布局 | 左栏板块菜单（可折叠）+ 中间虚拟滚动帖列表 + 右栏热门/通知/在线 |
-| 虚拟滚动 | `@tanstack/react-virtual` 帖列表 & 楼层回复 |
-| 已读/未读 | 未读高亮 + 角标 + 批量标记已读 |
-| 主题 | 浅色/暗黑一键切换，平板/手机自动收起侧栏 |
-| 交互 | 滚动加载更多、快捷回帖、楼层锚点、引用回复、@高亮 |
+| ✅ 已可用 | 三栏布局、暗色主题、虚拟滚动、Feed 排序、楼层评论 |
+| ✅ 发帖体验 | TipTap 富文本、正文图片上传、修订历史、可配置编辑时限 |
+| ✅ 管理后台 | React SPA：仪表盘、帖子置顶、用户禁言、论坛参数与敏感词配置 |
+| 📋 计划中 | 通知动态优化、邮件提醒 |
+
+完整列表见 **[路线图 ROADMAP.md](ROADMAP.md)**。发现问题请提交 [Issues](https://git.iioio.com/freefire/jiang13-forum/issues)，认领任务请参考 [CONTRIBUTING.md](CONTRIBUTING.md)。
+
+---
+
+## 参与贡献
+
+欢迎提交 Issue 和 Pull Request！详见 [CONTRIBUTING.md](CONTRIBUTING.md)。
+
+---

 ## 许可证

-MIT — 自用随意，欢迎修改。
+[MIT](LICENSE) — 自由使用、修改与分发。
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -0,0 +1,71 @@
+# 路线图 ROADMAP
+
+> 姜十三论坛仍在积极开发中，功能尚未完善。  
+> 欢迎通过 [Issues](https://git.iioio.com/freefire/jiang13-forum/issues) 反馈问题或认领任务。
+
+**图例：** ✅ 已完成 · 🚧 进行中 · 📋 计划中 · 🐛 已知缺陷
+
+---
+
+## 开发状态概览
+
+| 模块 | 状态 | 说明 |
+|------|------|------|
+| 前台 SPA（React） | ✅ | 浏览、发帖、回复、管理操作已统一在 SPA 内 |
+| 管理后台 | ✅ | React 后台 `/admin/*`，与前台风格一致 |
+| 评论系统 | ✅ | 换行显示已修复 |
+
+---
+
+## 🐛 已知缺陷（Bug）
+
+_当前无已记录缺陷。发现新问题请提交 [Issue](https://git.iioio.com/freefire/jiang13-forum/issues/new/choose)。_
+
+---
+
+## 📋 计划中（Planned）
+
+| 优先级 | 功能 | 说明 |
+|--------|------|------|
+| 中 | 通知动态优化 | 右栏最新动态的展示与交互 |
+| 低 | 帖子搜索增强 | 标题/正文/作者组合筛选 |
+| 低 | 邮件通知 | 回复提醒（需 SMTP 配置） |
+
+---
+
+## 🚧 进行中（In Progress）
+
+_当前无公开认领任务。_
+
+---
+
+## ✅ 已完成（Done）
+
+- [x] React 管理后台（仪表盘、板块、帖子、评论、用户、设置）
+- [x] 帖子置顶（帖子详情 + 管理后台）
+- [x] 评论回复换行正确显示
+- [x] 三栏布局 + 虚拟滚动帖列表
+- [x] 浅色 / 暗色主题切换
+- [x] 移动端响应式适配
+- [x] 用户注册登录、JWT 鉴权
+- [x] 板块管理、发帖、TipTap 富文本编辑
+- [x] 帖子正文图片本地上传
+- [x] 帖子修订历史与 diff 对比
+- [x] Feed 排序（最新发帖 / 最新回复 / 热门讨论）
+- [x] 可配置编辑时限与论坛参数（限流、字数上限等）
+- [x] 楼层式评论、引用回复、@ 高亮
+- [x] 点赞、收藏、热门帖
+- [x] 敏感词过滤、发帖限流
+- [x] SQLite 备份、单二进制部署
+
+---
+
+## 如何参与
+
+1. 在 [Issues](https://git.iioio.com/freefire/jiang13-forum/issues) 挑选任务（预填内容见 [docs/issue-templates.md](docs/issue-templates.md)）
+2. Fork → 分支 → PR，详见 [CONTRIBUTING.md](CONTRIBUTING.md)
+3. 有新想法先开 Issue 讨论，避免重复劳动
+
+---
+
+_最后更新：2026-06-16_
--- a/build.bat
+++ b/build.bat
@@ -1,4 +1,4 @@
@echo off
-REM 姜十三论坛 Windows 快捷构建（双击或命令行均可）
+REM Jiang13 Forum Windows build wrapper (double-click or run from cmd)
 powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0build.ps1" %*
 exit /b %ERRORLEVEL%
--- a/cmd/jiang13/main.go
+++ b/cmd/jiang13/main.go
@@ -11,9 +11,9 @@ import (
 	"syscall"
 	"time"

-	"github.com/jiang13/forum/config"
-	"github.com/jiang13/forum/model"
-	"github.com/jiang13/forum/router"
+	"git.iioio.com/freefire/jiang13-forum/config"
+	"git.iioio.com/freefire/jiang13-forum/model"
+	"git.iioio.com/freefire/jiang13-forum/router"
 )

 func main() {
--- a/config/config.go
+++ b/config/config.go
@@ -34,6 +34,10 @@ func Parse() (*Config, error) {
 	if err := os.MkdirAll(uploadDir, 0755); err != nil {
 		return nil, fmt.Errorf("创建上传目录失败: %w", err)
 	}
+	postImgDir := filepath.Join(*dataDir, "uploads", "posts")
+	if err := os.MkdirAll(postImgDir, 0755); err != nil {
+		return nil, fmt.Errorf("创建帖子图片目录失败: %w", err)
+	}

 	cfg := &Config{
 		Port:      *port,
@@ -61,11 +65,21 @@ func (c *Config) DBPath() string {
 	return filepath.Join(c.DataDir, "jiang13.db")
 }

-// UploadDir 返回头像上传目录
-func (c *Config) UploadDir() string {
+// AvatarUploadDir 返回头像上传目录
+func (c *Config) AvatarUploadDir() string {
 	return filepath.Join(c.DataDir, "uploads", "avatars")
 }

+// PostImageUploadDir 返回帖子正文图片上传目录
+func (c *Config) PostImageUploadDir() string {
+	return filepath.Join(c.DataDir, "uploads", "posts")
+}
+
+// UploadDir 返回头像上传目录（兼容旧调用）
+func (c *Config) UploadDir() string {
+	return c.AvatarUploadDir()
+}
+
 // FilterWordsPath 返回敏感词配置文件路径
 func (c *Config) FilterWordsPath() string {
 	return filepath.Join(c.DataDir, "filter_words.txt")
--- a/docs/issue-templates.md
+++ b/docs/issue-templates.md
@@ -0,0 +1,99 @@
+# Issue 预填模板
+
+以下两条可直接复制到 [Gitea Issues](https://git.iioio.com/freefire/jiang13-forum/issues/new) 创建，或使用仓库自带的 Issue 模板。
+
+---
+
+## Issue #1 · 评论回复换行不显示
+
+**标题：** `[Bug] 评论回复换行不显示`
+
+**标签：** `bug` `ui/ux`
+
+**正文：**
+
+### 问题描述
+
+在帖子详情页的评论框中输入多行文字（按 Enter 换行），提交后评论展示区域不保留换行，所有文字合并为一行。
+
+### 复现步骤
+
+1. 打开任意帖子详情页（如 `/post/2`）
+2. 在底部评论框输入：
+  ```
+   第一行
+   第二行
+   第三行
+  ```
+3. 点击发送
+4. 查看刚发布的评论
+
+### 期望行为
+
+评论正文按输入时的换行分段显示，行与行之间有明显间隔。
+
+### 实际行为
+
+多行内容被渲染成单行连续文字。
+
+### 相关代码
+
+- `frontend/src/components/CommentContent.tsx`
+- `frontend/src/utils/content.ts`（`highlightMentions` 中的 `\n` → `<br>` 转换）
+- `frontend/src/styles/global.css`（`.floor-body` 的 `white-space: pre-wrap`）
+
+### 可能原因
+
+- 仅处理了 `\n`，未处理 Windows 的 `\r\n`
+- `dangerouslySetInnerHTML` 与 `pre-wrap` 样式叠加导致表现异常
+- 服务端 `strings.TrimSpace` 或其他处理误删换行（待排查）
+
+### 环境
+
+- 前台：React SPA（`:3000` 嵌入版或 `:5173` 开发版）
+- 浏览器：Chrome / Edge 最新版
+
+---
+
+## Issue #2 · React 前台支持帖子置顶
+
+**标题：** `[Feature] React 前台增加帖子置顶操作`
+
+**标签：** `enhancement` `ui/ux` `good first issue`
+
+**正文：**
+
+### 要解决的问题
+
+管理员无法在 React SPA 前台对帖子执行置顶/取消置顶，必须跳转到旧版 HTML 管理后台（`/admin/posts`），体验割裂。
+
+### 现状
+
+
+| 能力                                  | 状态   |
+| ----------------------------------- | ---- |
+| 数据模型 `pinned` 字段                    | ✅ 已有 |
+| 列表按置顶排序                             | ✅ 已有 |
+| API `POST /admin/api/posts/:id/pin` | ✅ 已有 |
+| 旧版后台置顶按钮                            | ✅ 已有 |
+| React 列表/详情显示置顶徽章                   | ✅ 已有 |
+| **React 前台置顶操作入口**                  | ❌ 缺失 |
+
+
+### 期望方案
+
+在 React SPA 中为管理员提供置顶操作，例如：
+
+1. **帖子详情页**：标题旁增加「置顶 / 取消置顶」按钮（仅 `role === 'admin'` 可见）
+2. **帖列表项**：管理员 hover 时显示置顶快捷操作（可选）
+3. 调用已有 API，成功后刷新列表/详情，无需跳转旧后台
+
+### 相关代码
+
+- 后端：`service/post.go` → `SetPinned`，`handler/admin.go` → `AdminAPIPinPost`
+- 前端：`frontend/src/pages/PostDetailPage.tsx`、`frontend/src/components/PostListItem.tsx`
+- 参考旧版：`embed_static/templates/admin/posts.html` 中的 `togglePin`
+
+### 备注
+
+适合作为 `good first issue`，改动范围小、API 已就绪。
--- a/docs/screenshots/compose.png
+++ b/docs/screenshots/compose.png
--- a/docs/screenshots/home-dark.png
+++ b/docs/screenshots/home-dark.png
--- a/docs/screenshots/home-light.png
+++ b/docs/screenshots/home-light.png
--- a/docs/screenshots/mobile-home.png
+++ b/docs/screenshots/mobile-home.png
--- a/docs/screenshots/post-detail.png
+++ b/docs/screenshots/post-detail.png
--- a/embed_static/static/spa/assets/BoardsManagePage-DC-_uHJb.js
+++ b/embed_static/static/spa/assets/BoardsManagePage-DC-_uHJb.js
--- a/embed_static/static/spa/assets/ComposePage-Dv2Wt-UO.js
+++ b/embed_static/static/spa/assets/ComposePage-Dv2Wt-UO.js
--- a/embed_static/static/spa/assets/FavoritesPage-Dvc9bR9_.js
+++ b/embed_static/static/spa/assets/FavoritesPage-Dvc9bR9_.js
@@ -1 +0,0 @@
-import{e as j,r as n,j as s}from"./react-vendor-CgzNJrV9.js";import{u as f,a as g,B as p}from"./index-474mTIgd.js";import{S as N}from"./spinner-DH1syOsQ.js";import{n as v}from"./notify-Zesh5czd.js";import{f as y}from"./content-CKr4Ur51.js";import{A as k}from"./ui-vendor-CdH1UOKW.js";function E(){const t=j(),{user:a,loading:r}=f(),[i,h]=n.useState([]),[u,x]=n.useState(!0);return n.useEffect(()=>{if(!r){if(!a){t("/login");return}g.favorites().then(e=>h(Array.isArray(e.favorites)?e.favorites:[])).catch(e=>v.error(e.message)).finally(()=>x(!1))}},[a,r,t]),r||u?s.jsx("div",{className:"flex justify-center py-16",children:s.jsx(N,{size:"lg"})}):a?s.jsx("div",{className:"page-wrap",children:s.jsxs("div",{className:"page-inner-wide",children:[s.jsxs(p,{variant:"ghost",className:"mb-3",onClick:()=>t("/"),children:[s.jsx(k,{}),"返回"]}),s.jsx("h1",{className:"page-title",children:"我的收藏"}),s.jsxs("p",{className:"page-desc",children:["共 ",i.length," 篇收藏帖子"]}),i.length===0?s.jsxs("div",{className:"empty-state",children:[s.jsx("p",{children:"还没有收藏任何帖子"}),s.jsx(p,{onClick:()=>t("/"),children:"去逛逛"})]}):s.jsx("div",{className:"content-surface",children:i.map(e=>{var o,l,c,d,m;return s.jsx("div",{className:"post-row",onClick:()=>t(`/post/${e.post_id}`),children:s.jsxs("div",{className:"post-body",children:[s.jsx("div",{className:"post-title",children:((o=e.post)==null?void 0:o.title)||"帖子已删除"}),s.jsxs("div",{className:"post-meta",children:[((c=(l=e.post)==null?void 0:l.board)==null?void 0:c.name)&&s.jsx("span",{children:e.post.board.name}),((m=(d=e.post)==null?void 0:d.user)==null?void 0:m.nickname)&&s.jsx("span",{children:e.post.user.nickname}),s.jsxs("span",{children:["收藏于 ",y(e.created_at)]})]})]})},e.id)})})]})}):null}export{E as default};
--- a/embed_static/static/spa/assets/HomePage-D-Yzai0_.js
+++ b/embed_static/static/spa/assets/HomePage-D-Yzai0_.js
--- a/embed_static/static/spa/assets/LoginPage-XRVgE8q8.js
+++ b/embed_static/static/spa/assets/LoginPage-XRVgE8q8.js
@@ -1 +0,0 @@
-import{e as f,r as g,j as s,L as b}from"./react-vendor-CgzNJrV9.js";import{u as w,a as F,F as y,b as t,c as n,d as l,e as c,I as i,f as m,o as N,s as d}from"./form-BzHbu9bJ.js";import{u as v,B as L,a as S}from"./index-474mTIgd.js";import{n as u}from"./notify-Zesh5czd.js";import"./ui-vendor-CdH1UOKW.js";const C=N({username:d().min(1,"请输入用户名"),password:d().min(1,"请输入密码")});function z(){const x=f(),{refresh:p}=v(),[h,a]=g.useState(!1),r=w({resolver:F(C),defaultValues:{username:"",password:""}}),j=async e=>{a(!0);try{await S.login(e.username,e.password),await p(),u.success("登录成功"),x("/",{replace:!0})}catch(o){u.error(o instanceof Error?o.message:"登录失败")}finally{a(!1)}};return s.jsx("div",{className:"auth-page",children:s.jsxs("div",{className:"auth-box",children:[s.jsx("div",{className:"logo-mark",children:"姜"}),s.jsx("h1",{children:"登录姜十三论坛"}),s.jsx("p",{className:"subtitle",children:"拾三一隅，自在交流"}),s.jsx(y,{...r,children:s.jsxs("form",{onSubmit:r.handleSubmit(j),className:"space-y-4",children:[s.jsx(t,{control:r.control,name:"username",render:({field:e})=>s.jsxs(n,{children:[s.jsx(l,{children:"用户名"}),s.jsx(c,{children:s.jsx(i,{placeholder:"用户名",autoComplete:"username",...e})}),s.jsx(m,{})]})}),s.jsx(t,{control:r.control,name:"password",render:({field:e})=>s.jsxs(n,{children:[s.jsx(l,{children:"密码"}),s.jsx(c,{children:s.jsx(i,{type:"password",placeholder:"密码",autoComplete:"current-password",...e})}),s.jsx(m,{})]})}),s.jsx(L,{type:"submit",className:"w-full",loading:h,children:"登录"})]})}),s.jsxs("p",{style:{textAlign:"center",marginTop:16,fontSize:13,color:"var(--color-text-3)"},children:["没有账号？",s.jsx(b,{to:"/register",children:"注册"})]})]})})}export{z as default};
--- a/embed_static/static/spa/assets/PostDetailPage-D4qGd4ZA.js
+++ b/embed_static/static/spa/assets/PostDetailPage-D4qGd4ZA.js
--- a/embed_static/static/spa/assets/ProfilePage-nO8fm023.js
+++ b/embed_static/static/spa/assets/ProfilePage-nO8fm023.js
--- a/embed_static/static/spa/assets/RegisterPage-C4KCPGxX.js
+++ b/embed_static/static/spa/assets/RegisterPage-C4KCPGxX.js
@@ -1 +0,0 @@
-import{e as f,r as g,j as s,L as w}from"./react-vendor-CgzNJrV9.js";import{u as b,a as F,F as y,b as a,c as n,d as o,e as t,I as c,f as l,o as k,s as i}from"./form-BzHbu9bJ.js";import{u as N,B as S,a as v}from"./index-474mTIgd.js";import{n as x}from"./notify-Zesh5czd.js";import"./ui-vendor-CdH1UOKW.js";const C=k({username:i().min(1,"请输入用户名"),nickname:i().optional(),password:i().min(6,"密码至少 6 位")});function R(){const u=f(),{refresh:j}=N(),[p,m]=g.useState(!1),r=b({resolver:F(C),defaultValues:{username:"",nickname:"",password:""}}),h=async e=>{m(!0);try{await v.register(e.username,e.password,e.nickname||e.username),await j(),x.success("注册成功"),u("/",{replace:!0})}catch(d){x.error(d instanceof Error?d.message:"注册失败")}finally{m(!1)}};return s.jsx("div",{className:"auth-page",children:s.jsxs("div",{className:"auth-box",children:[s.jsx("div",{className:"logo-mark",children:"姜"}),s.jsx("h1",{children:"注册账号"}),s.jsx("p",{className:"subtitle",children:"首个注册用户自动成为管理员"}),s.jsx(y,{...r,children:s.jsxs("form",{onSubmit:r.handleSubmit(h),className:"space-y-4",children:[s.jsx(a,{control:r.control,name:"username",render:({field:e})=>s.jsxs(n,{children:[s.jsx(o,{children:"用户名"}),s.jsx(t,{children:s.jsx(c,{placeholder:"3-32 位字母数字下划线",autoComplete:"username",...e})}),s.jsx(l,{})]})}),s.jsx(a,{control:r.control,name:"nickname",render:({field:e})=>s.jsxs(n,{children:[s.jsx(o,{children:"昵称"}),s.jsx(t,{children:s.jsx(c,{placeholder:"显示名称（可选）",autoComplete:"nickname",...e})}),s.jsx(l,{})]})}),s.jsx(a,{control:r.control,name:"password",render:({field:e})=>s.jsxs(n,{children:[s.jsx(o,{children:"密码"}),s.jsx(t,{children:s.jsx(c,{type:"password",placeholder:"至少 6 位",autoComplete:"new-password",...e})}),s.jsx(l,{})]})}),s.jsx(S,{type:"submit",className:"w-full",loading:p,children:"注册"})]})}),s.jsxs("p",{style:{textAlign:"center",marginTop:16,fontSize:13,color:"var(--color-text-3)"},children:["已有账号？",s.jsx(w,{to:"/login",children:"登录"})]})]})})}export{R as default};
--- a/embed_static/static/spa/assets/badge-CsEfIQQ2.js
+++ b/embed_static/static/spa/assets/badge-CsEfIQQ2.js
@@ -1 +0,0 @@
-import{j as n}from"./react-vendor-CgzNJrV9.js";import{c as a,d as o}from"./index-474mTIgd.js";const s=o("inline-flex items-center rounded-md border px-2 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",{variants:{variant:{default:"border-transparent bg-primary text-primary-foreground shadow",secondary:"border-transparent bg-secondary text-secondary-foreground",destructive:"border-transparent bg-destructive text-destructive-foreground shadow",outline:"text-foreground",green:"border-transparent bg-[var(--j13-green-bg)] text-[var(--j13-green)]",orange:"border-transparent bg-orange-100 text-orange-700 dark:bg-orange-950 dark:text-orange-300"}},defaultVariants:{variant:"default"}});function g({className:r,variant:e,...t}){return n.jsx("div",{className:a(s({variant:e}),r),...t})}export{g as B};
--- a/embed_static/static/spa/assets/content-CKr4Ur51.js
+++ b/embed_static/static/spa/assets/content-CKr4Ur51.js
@@ -1 +0,0 @@
-function a(n,t){return n.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/@([\w\u4e00-\u9fa5_-]+)/g,'<span class="mention">@$1</span>')}function o(n){const t=new Date(n),e=(new Date().getTime()-t.getTime())/1e3;return e<60?"刚刚":e<3600?`${Math.floor(e/60)}分钟前`:e<86400?`${Math.floor(e/3600)}小时前`:`${t.getMonth()+1}-${t.getDate()} ${String(t.getHours()).padStart(2,"0")}:${String(t.getMinutes()).padStart(2,"0")}`}export{o as f,a as h};
--- a/embed_static/static/spa/assets/form-BzHbu9bJ.js
+++ b/embed_static/static/spa/assets/form-BzHbu9bJ.js
--- a/embed_static/static/spa/assets/index-474mTIgd.js
+++ b/embed_static/static/spa/assets/index-474mTIgd.js
--- a/embed_static/static/spa/assets/index-JNN-o0YU.css
+++ b/embed_static/static/spa/assets/index-JNN-o0YU.css
--- a/embed_static/static/spa/assets/markdown-vendor-DxR1h-Bq.js
+++ b/embed_static/static/spa/assets/markdown-vendor-DxR1h-Bq.js
--- a/embed_static/static/spa/assets/notify-Zesh5czd.js
+++ b/embed_static/static/spa/assets/notify-Zesh5czd.js
@@ -1 +0,0 @@
-import{t as s}from"./index-474mTIgd.js";const n={success:r=>s.success(r),error:r=>s.error(r),warning:r=>s.warning(r)};export{n};
--- a/embed_static/static/spa/assets/postContent-CNPsgNvN.js
+++ b/embed_static/static/spa/assets/postContent-CNPsgNvN.js
@@ -1,23 +0,0 @@
-import{p as m}from"./markdown-vendor-DxR1h-Bq.js";const d={ADD_TAGS:["members-only"],ADD_ATTR:["data-locked","data-length"]},c=`
-<div class="post-members-only__badge">
-  <span class="post-members-only__badge-icon" aria-hidden="true">
-    <svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><rect width="18" height="11" x="3" y="11" rx="2" ry="2"/><path d="M7 11V7a5 5 0 0 1 10 0v4"/></svg>
-  </span>
-  <span>登录可见</span>
-</div>`,a='<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect width="18" height="11" x="3" y="11" rx="2" ry="2"/><path d="M7 11V7a5 5 0 0 1 10 0v4"/></svg>';function p(s){const r=s>0?Math.min(6,Math.max(3,Math.ceil(s/42))):4,n=Array.from({length:r},(l,i)=>{const o=i%3;return`<div class="post-members-only__preview-line${o===1?" post-members-only__preview-line--medium":o===2?" post-members-only__preview-line--short":""}"></div>`}).join(""),e=s>0?`约 ${s} 字的`:"一段";return`
-<div class="post-members-only__locked-wrap">
-  <div class="post-members-only__badge post-members-only__badge--locked">
-    <span class="post-members-only__badge-icon" aria-hidden="true">${a}</span>
-    <span>登录可见</span>
-  </div>
-  <div class="post-members-only__preview" aria-hidden="true">
-    ${n}
-  </div>
-  <div class="post-members-only__gate">
-    <div class="post-members-only__gate-icon" aria-hidden="true">${a}</div>
-    <p class="post-members-only__gate-title">此处有${e}专属内容</p>
-    <p class="post-members-only__gate-desc">作者已将这部分内容设为仅登录用户可见，登录后即可阅读全文。</p>
-    <button type="button" class="post-members-only__gate-btn" data-members-login>登录查看</button>
-    <span class="post-members-only__gate-alt">还没有账号？<button type="button" class="post-members-only__gate-link" data-members-register>免费注册</button></span>
-  </div>
-</div>`}function b(s,r){if(!s.trim())return"";const n=new DOMParser().parseFromString(m.sanitize(s,d),"text/html");return n.querySelectorAll("members-only").forEach(e=>{var o;if(e.getAttribute("data-locked")==="true"||!r){const t=parseInt(e.getAttribute("data-length")||"0",10)||0;e.setAttribute("data-locked","true"),e.className="post-members-only post-members-only--locked",e.innerHTML=p(t);return}const i=((o=e.querySelector(".post-members-only__body"))==null?void 0:o.innerHTML)??Array.from(e.childNodes).filter(t=>!(t instanceof Element&&t.classList.contains("post-members-only__badge"))).map(t=>t instanceof Element?t.outerHTML:t.textContent??"").join("");e.className="post-members-only post-members-only--visible",e.innerHTML=`${c}<div class="post-members-only__body">${i}</div>`}),n.body.innerHTML}export{d as P,b as r};
--- a/embed_static/static/spa/assets/react-vendor-CgzNJrV9.js
+++ b/embed_static/static/spa/assets/react-vendor-CgzNJrV9.js
--- a/embed_static/static/spa/assets/spinner-DH1syOsQ.js
+++ b/embed_static/static/spa/assets/spinner-DH1syOsQ.js
@@ -1 +0,0 @@
-import{j as e}from"./react-vendor-CgzNJrV9.js";import{c as s}from"./index-474mTIgd.js";import{p as m}from"./ui-vendor-CdH1UOKW.js";const t={sm:"h-4 w-4",md:"h-5 w-5",lg:"h-8 w-8"};function p({className:r,size:a="md"}){return e.jsx(m,{className:s("animate-spin text-[var(--j13-green)]",t[a],r),"aria-label":"加载中"})}export{p as S};
--- a/embed_static/static/spa/assets/ui-vendor-CdH1UOKW.js
+++ b/embed_static/static/spa/assets/ui-vendor-CdH1UOKW.js
--- a/embed_static/static/spa/assets/virtual-vendor-05wd80F5.js
+++ b/embed_static/static/spa/assets/virtual-vendor-05wd80F5.js
--- a/embed_static/static/spa/index.html
+++ b/embed_static/static/spa/index.html
@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html lang="zh-CN">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>姜十三论坛 Jiang13 Forum</title>
-    <style>
-      /* 关键布局样式：在 JS/CSS 包加载前即固定三栏结构，避免刷新时组件错位 */
-      html { scrollbar-gutter: stable; }
-      html, body, #root { height: 100%; margin: 0; }
-      body { overflow: hidden; font-size: 14px; line-height: 1.5; }
-      .app-shell { height: 100%; max-height: 100dvh; display: flex; flex-direction: column; overflow: hidden; }
-      .app-frame { flex: 1; min-height: 0; height: 100%; max-width: 1400px; width: 100%; margin: 0 auto; display: flex; flex-direction: column; overflow: hidden; }
-      .app-header { height: 56px; flex-shrink: 0; }
-      .app-body { flex: 1; display: flex; min-height: 0; width: 100%; overflow: hidden; }
-      .content-workspace { flex: 1; display: flex; min-width: 0; min-height: 0; overflow: hidden; }
-      .sidebar { width: 210px; flex-shrink: 0; }
-      .main-content { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; overflow: hidden; }
-      .aside-panel { width: 280px; flex-shrink: 0; }
-      @media (max-width: 1100px) { .aside-panel { display: none; } }
-      @media (max-width: 768px) { .sidebar { display: none; } }
-    </style>
-    <script>
-      (function () {
-        var theme = localStorage.getItem('j13-theme') || 'light';
-        document.documentElement.classList.toggle('dark', theme === 'dark');
-        document.documentElement.style.colorScheme = theme;
-      })();
-    </script>
-    <script type="module" crossorigin src="/assets/index-474mTIgd.js"></script>
-    <link rel="modulepreload" crossorigin href="/assets/react-vendor-CgzNJrV9.js">
-    <link rel="modulepreload" crossorigin href="/assets/ui-vendor-CdH1UOKW.js">
-    <link rel="stylesheet" crossorigin href="/assets/index-JNN-o0YU.css">
-  </head>
-  <body>
-    <div id="root"></div>
-  </body>
-</html>
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -16,28 +16,39 @@
        "@radix-ui/react-slot": "^1.2.5",
        "@radix-ui/react-switch": "^1.3.0",
        "@tanstack/react-virtual": "^3.11.2",
+        "@tiptap/core": "^3.26.1",
+        "@tiptap/extension-image": "^3.26.1",
+        "@tiptap/extension-link": "^3.26.1",
+        "@tiptap/extension-placeholder": "^3.26.1",
+        "@tiptap/extension-underline": "^3.26.1",
+        "@tiptap/pm": "^3.26.1",
+        "@tiptap/react": "^3.26.1",
+        "@tiptap/starter-kit": "^3.26.1",
        "autoprefixer": "^10.5.0",
        "class-variance-authority": "^0.7.1",
        "clsx": "^2.1.1",
        "dayjs": "^1.11.13",
+        "diff": "^9.0.0",
        "dompurify": "^3.4.10",
        "lucide-react": "^1.18.0",
        "marked": "^18.0.5",
        "postcss": "^8.5.15",
-        "react": "^18.3.1",
        "react-dom": "^18.3.1",
+        "react-easy-crop": "^6.0.2",
        "react-hook-form": "^7.79.0",
        "react-router-dom": "^6.28.0",
        "sonner": "^2.0.7",
        "tailwind-merge": "^3.6.0",
        "tailwindcss": "^3.4.19",
        "tailwindcss-animate": "^1.0.7",
+        "turndown": "^7.2.4",
        "zod": "^4.4.3"
      },
      "devDependencies": {
        "@types/node": "^25.9.3",
        "@types/react": "^18.3.12",
        "@types/react-dom": "^18.3.1",
+        "@types/turndown": "^5.0.6",
        "@vitejs/plugin-react": "^4.3.4",
        "typescript": "^5.6.3",
        "vite": "^5.4.11"
@@ -824,6 +835,12 @@
        "@jridgewell/sourcemap-codec": "^1.4.14"
      }
    },
+    "node_modules/@mixmark-io/domino": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@mixmark-io/domino/-/domino-2.2.0.tgz",
+      "integrity": "sha512-Y28PR25bHXUg88kCV7nivXrP2Nj2RueZ3/l/jdx6J9f8J4nsEGcgX0Qe6lt7Pa+J79+kPiJU3LguR6O/6zrLOw==",
+      "license": "BSD-2-Clause"
+    },
    "node_modules/@nodelib/fs.scandir": {
      "version": "2.1.5",
      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -1921,6 +1938,461 @@
        "url": "https://github.com/sponsors/tannerlinsley"
      }
    },
+    "node_modules/@tiptap/core": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/core/-/core-3.26.1.tgz",
+      "integrity": "sha512-TX9PyPqBoix0qDLjtok/bddtdSy54QhzLVha405C07V+WySOpH3s/pWYkywehZQY0SQtcrcY4MNSCeQjCbA28A==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-blockquote": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-blockquote/-/extension-blockquote-3.26.1.tgz",
+      "integrity": "sha512-WaKjKmUaadgvZDDBk9JOn/oidlOFr6booqJIWHGL5S0aUUTKHS19oGfKQq/l9Z1y1niaRePk0Y4fy/jxCnfKPA==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-bold": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-bold/-/extension-bold-3.26.1.tgz",
+      "integrity": "sha512-VIlF2sAiV6K009pcIDotfY8mvsPaq90dxeG9Q0ZIqfMD958TUCqjHw4MGYZf0/FgP12xksBfmcR7W312xgUf9Q==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-bubble-menu": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-bubble-menu/-/extension-bubble-menu-3.26.1.tgz",
+      "integrity": "sha512-Y3R9wFKP/U9M04JG+0PM/yW3OV+MSbUp6YBKQWZmUu8x6y7TbcNvDsaJ6QEFZt5aRMS6qH1ksYPTOz47JdjcfA==",
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@floating-ui/dom": "^1.0.0"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-bullet-list": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-bullet-list/-/extension-bullet-list-3.26.1.tgz",
+      "integrity": "sha512-JB6bEJJHxXNAXEXTIAN3/j70p1ARHdeMfhzshGZswWKUWtDibTCrspIp7p1VNeiuVtJ/HB6PpFkGi7yWtQ3RTg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extension-list": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-code": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-code/-/extension-code-3.26.1.tgz",
+      "integrity": "sha512-t9/VR5k3rGPyhcGau9YvVgaAQ+nP9R9WzS996bQQ7GIrMOTSXb0FWwoQFBiYl83V6VA16Tlj/oScC7SFlA8lvA==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-code-block": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-code-block/-/extension-code-block-3.26.1.tgz",
+      "integrity": "sha512-NY7SYqcrqDVYTSWyaNGdSfCims6pOHoRQ2Rh4DEFb/rb8gLVkqbLZhcHzQCVfinlPqgV3xWF6cYMORwmnlBkXQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-document": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-document/-/extension-document-3.26.1.tgz",
+      "integrity": "sha512-6W2vZjvi0Mv+4xEtwMDGhWwo7FotWR6eKfmntmduvehWevFpMxOKcTtyotjLigfZv738y50YWmvbaPuAPJG3BA==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-dropcursor": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-dropcursor/-/extension-dropcursor-3.26.1.tgz",
+      "integrity": "sha512-eVq3BvFIa3YD+pBIlj1i72vYEixlegGVKHnSYiVF2ovkQOSAH9sca7pkq6WgV1sMTCyWCU8e+WznTqtydvHUWA==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extensions": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-floating-menu": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-floating-menu/-/extension-floating-menu-3.26.1.tgz",
+      "integrity": "sha512-xn0g4m/q2bjG+hULPwp6Aqb/6wpzUtc65jOhgJsG/S3Ey3kLJGUvZBuhozwNFu8FcugxM1fMUpNhkJkodCCGFw==",
+      "license": "MIT",
+      "optional": true,
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@floating-ui/dom": "^1.0.0",
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-gapcursor": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-gapcursor/-/extension-gapcursor-3.26.1.tgz",
+      "integrity": "sha512-BWW1yMQQA4TbEU0LLK+4cd9ebLTuZG5KjHwFMBRD/bGiRW9V1gTWFsCqThBbczcANoQiZK9pn5/4Ad/rGM3HUg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extensions": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-hard-break": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-hard-break/-/extension-hard-break-3.26.1.tgz",
+      "integrity": "sha512-gzNb1e/fK6HN+ko1axsrasjK7F1q0Bnm0G4ZY/0eq7pV7s1wZuwoCiGbvUx/9LCFKRV6+94FTqlb0A3NbYN36g==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-heading": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-heading/-/extension-heading-3.26.1.tgz",
+      "integrity": "sha512-eRlv9XxzUL8FobKAiF1WjP35CT2QpbcxxeyYFF7BmGEONvKI7r5g7JGwyGli4Cvclh70h8w6JuoXSmGUVEU65A==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-horizontal-rule": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-horizontal-rule/-/extension-horizontal-rule-3.26.1.tgz",
+      "integrity": "sha512-l9lPZYeSmY90y/2GkQcKaICFD5Atr8sx2SzJGkQzpNC9tRxZXyAHnfJE3OjBkspuGzjWIN0DimxBj4ibz58sKw==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-image": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-image/-/extension-image-3.26.1.tgz",
+      "integrity": "sha512-IjoT+kRK4a1sTImvUz257yfk5l9kMxXxfxCfix5AUKdiWyn8SGUjJZapLICcZVY05UDqXmwsBvBK9lHkKX5ERg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-italic": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-italic/-/extension-italic-3.26.1.tgz",
+      "integrity": "sha512-cLKYvOLToWEkJkAPspgIZ/PYDzAxacLm1VWcAq1tO1QDQCDe2Kw+y/zsGlyYEq/aKsAgpp4JNopBwAXRXxt2/A==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-link": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-link/-/extension-link-3.26.1.tgz",
+      "integrity": "sha512-aLLGLgikuhLFHRbjfUC6D4gRg+NUty4uhW7YkyVl8AxxPME47dPbCOX4H6uLCjEZcn3WnfNuCTr6HCTl0KEmGA==",
+      "license": "MIT",
+      "dependencies": {
+        "linkifyjs": "^4.3.3"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-list": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-list/-/extension-list-3.26.1.tgz",
+      "integrity": "sha512-06nOjnyXpzMO8Ys5k3IbYsDsKib1mv2OtaxBYX1/1uvRyOKwUX5tqDLb/qigic0LIANNL73lkNC8Z8XPeG4Tkg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-list-item": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-list-item/-/extension-list-item-3.26.1.tgz",
+      "integrity": "sha512-5gLXJUiP763NA6i4HgrtcwUDXPP8820hsaBQyF1Y1VsXNi02uW9FVLe3RZK8jF0NZUNh9CqD0gogYJCbKOUU8A==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extension-list": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-list-keymap": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-list-keymap/-/extension-list-keymap-3.26.1.tgz",
+      "integrity": "sha512-EReSayePO6SIxtRbxx+7KfBQreWHvoZmMb3O/RemfT8W6J0hCG5N/Rh8Z12+YZOnCDRXJ4RzFpAikYka3E54jQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extension-list": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-ordered-list": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-ordered-list/-/extension-ordered-list-3.26.1.tgz",
+      "integrity": "sha512-LeFPeFwb7ylkQVuuaHj+niu7WhWHpjDOi1GKZJE/ohOa2lgt7P221HMqhUzPiDlXOExN72oWTNmXUlT0ymCTkw==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extension-list": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-paragraph": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-paragraph/-/extension-paragraph-3.26.1.tgz",
+      "integrity": "sha512-OkBeYUNM3eTzjm3z6IcC3NHryOX8g3eGNI86P/B+tFoFQSRuzLsKZU50ARCfIiLLg812NjcqujeJ1eX3BKDZrw==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-placeholder": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-placeholder/-/extension-placeholder-3.26.1.tgz",
+      "integrity": "sha512-oJCEVmaaUY1Jn5v8KbRMdgYLFH9aptLkir+M0ZMnl+8TTmvMdLK2H02X9ofZQwAb12qreQgb890hB3PFen7TDg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/extensions": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-strike": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-strike/-/extension-strike-3.26.1.tgz",
+      "integrity": "sha512-7hmQ2mBsA+75GRrJIKYxb+10H23mblEQSGGsv9Ptl7JLaGmj+8sv2HGQGSUT9QBiBVprxaYTqyWFXQC9akfLWg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-text": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-text/-/extension-text-3.26.1.tgz",
+      "integrity": "sha512-Gocui5WvcCCJJIX17gdOVCSdYi5H4fDwaR0qkMAUZPq5kJCdrfl+vNpt8BTt53Bk+/QumiUW21fhQ184w7RoeQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extension-underline": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extension-underline/-/extension-underline-3.26.1.tgz",
+      "integrity": "sha512-HUHtQ+DRWDM0opW7Nk3YQwrLzw876hMU7cr1X/ZTG+8Bp+AKHihlwU+bqrPgG5St0mqASyUEhHQ/vK5PlnUYOQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/extensions": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/extensions/-/extensions-3.26.1.tgz",
+      "integrity": "sha512-PmRaoe6bebTgz/ZQrjmzwZMST1d9js9ZTiKnUXeXl3Fm+V5U/c3TbbKDfqmL63qPQdjtShDMHi9tYuv+c77OFQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1"
+      }
+    },
+    "node_modules/@tiptap/pm": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/pm/-/pm-3.26.1.tgz",
+      "integrity": "sha512-48cJQRbvr9Ux0+IgM1BR5vOLU5hkC+n+uerdQy2JjrIRKpYE/huU8fQFm6PoRppoKYfilklzb29elsQ+n2TA+g==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-changeset": "^2.3.0",
+        "prosemirror-commands": "^1.6.2",
+        "prosemirror-dropcursor": "^1.8.1",
+        "prosemirror-gapcursor": "^1.3.2",
+        "prosemirror-history": "^1.4.1",
+        "prosemirror-inputrules": "^1.4.0",
+        "prosemirror-keymap": "^1.2.3",
+        "prosemirror-model": "^1.25.7",
+        "prosemirror-schema-list": "^1.5.0",
+        "prosemirror-state": "^1.4.4",
+        "prosemirror-tables": "^1.8.0",
+        "prosemirror-transform": "^1.12.0",
+        "prosemirror-view": "^1.41.8"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      }
+    },
+    "node_modules/@tiptap/react": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/react/-/react-3.26.1.tgz",
+      "integrity": "sha512-Gl7AhTJM7pjQ2WFwdIwD736oQeqUcw3GVaXYmCKtwTSO3F9PszLgeKEp6DvM+CmctTNYhu/apRfzkH3vU0h0uA==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/use-sync-external-store": "^0.0.6",
+        "fast-equals": "^5.3.3",
+        "use-sync-external-store": "^1.4.0"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      },
+      "optionalDependencies": {
+        "@tiptap/extension-bubble-menu": "^3.26.1",
+        "@tiptap/extension-floating-menu": "^3.26.1"
+      },
+      "peerDependencies": {
+        "@tiptap/core": "3.26.1",
+        "@tiptap/pm": "3.26.1",
+        "@types/react": "^17.0.0 || ^18.0.0 || ^19.0.0",
+        "@types/react-dom": "^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react": "^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-dom": "^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/@tiptap/starter-kit": {
+      "version": "3.26.1",
+      "resolved": "https://registry.npmjs.org/@tiptap/starter-kit/-/starter-kit-3.26.1.tgz",
+      "integrity": "sha512-A0zsvwGU9exLND34F8e8KqUXFSfs835tNN+VC+ZT3yNeaO/WXnlh/Cgal1F6pHHbcxy7RV2CRwJU5S3cWLPxrA==",
+      "license": "MIT",
+      "dependencies": {
+        "@tiptap/core": "^3.26.1",
+        "@tiptap/extension-blockquote": "^3.26.1",
+        "@tiptap/extension-bold": "^3.26.1",
+        "@tiptap/extension-bullet-list": "^3.26.1",
+        "@tiptap/extension-code": "^3.26.1",
+        "@tiptap/extension-code-block": "^3.26.1",
+        "@tiptap/extension-document": "^3.26.1",
+        "@tiptap/extension-dropcursor": "^3.26.1",
+        "@tiptap/extension-gapcursor": "^3.26.1",
+        "@tiptap/extension-hard-break": "^3.26.1",
+        "@tiptap/extension-heading": "^3.26.1",
+        "@tiptap/extension-horizontal-rule": "^3.26.1",
+        "@tiptap/extension-italic": "^3.26.1",
+        "@tiptap/extension-link": "^3.26.1",
+        "@tiptap/extension-list": "^3.26.1",
+        "@tiptap/extension-list-item": "^3.26.1",
+        "@tiptap/extension-list-keymap": "^3.26.1",
+        "@tiptap/extension-ordered-list": "^3.26.1",
+        "@tiptap/extension-paragraph": "^3.26.1",
+        "@tiptap/extension-strike": "^3.26.1",
+        "@tiptap/extension-text": "^3.26.1",
+        "@tiptap/extension-underline": "^3.26.1",
+        "@tiptap/extensions": "^3.26.1",
+        "@tiptap/pm": "^3.26.1"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/ueberdosis"
+      }
+    },
    "node_modules/@types/babel__core": {
      "version": "7.20.5",
      "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
@@ -1987,14 +2459,12 @@
      "version": "15.7.15",
      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.15.tgz",
      "integrity": "sha512-F6bEyamV9jKGAFBEmlQnesRPGOQqS2+Uwi0Em15xenOxHaf2hv6L8YCVn3rPdPJOiJfPiCnLIRyvwVaqMY3MIw==",
-      "devOptional": true,
      "license": "MIT"
    },
    "node_modules/@types/react": {
      "version": "18.3.31",
      "resolved": "https://registry.npmjs.org/@types/react/-/react-18.3.31.tgz",
      "integrity": "sha512-vfEqpXTvwT91yhmwdfouStN2hSKwTvyRs8qpLfADyrq/kxDw0hZM7Wk9Ug1FELj8hIby+S/+kQCSRFF32nv2Qw==",
-      "devOptional": true,
      "license": "MIT",
      "dependencies": {
        "@types/prop-types": "*",
@@ -2005,7 +2475,6 @@
      "version": "18.3.7",
      "resolved": "https://registry.npmjs.org/@types/react-dom/-/react-dom-18.3.7.tgz",
      "integrity": "sha512-MEe3UeoENYVFXzoXEWsvcpg6ZvlrFNlOQ7EOsvhI3CfAXwzPfO8Qwuxd40nepsYKqyyVQnTdEfv68q91yLcKrQ==",
-      "devOptional": true,
      "license": "MIT",
      "peerDependencies": {
        "@types/react": "^18.0.0"
@@ -2018,6 +2487,19 @@
      "license": "MIT",
      "optional": true
    },
+    "node_modules/@types/turndown": {
+      "version": "5.0.6",
+      "resolved": "https://registry.npmjs.org/@types/turndown/-/turndown-5.0.6.tgz",
+      "integrity": "sha512-ru00MoyeeouE5BX4gRL+6m/BsDfbRayOskWqUvh7CLGW+UXxHQItqALa38kKnOiZPqJrtzJUgAC2+F0rL1S4Pg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/use-sync-external-store": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/@types/use-sync-external-store/-/use-sync-external-store-0.0.6.tgz",
+      "integrity": "sha512-zFDAD+tlpf2r4asuHEj0XH6pY6i0g5NeAHPn+15wk3BV6JA69eERFXC1gyGThDkVa1zCyKr5jox1+2LbV/AMLg==",
+      "license": "MIT"
+    },
    "node_modules/@vitejs/plugin-react": {
      "version": "4.7.0",
      "resolved": "https://registry.npmjs.org/@vitejs/plugin-react/-/plugin-react-4.7.0.tgz",
@@ -2299,7 +2781,6 @@
      "version": "3.2.3",
      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
      "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
-      "devOptional": true,
      "license": "MIT"
    },
    "node_modules/dayjs": {
@@ -2338,6 +2819,15 @@
      "integrity": "sha512-gxtyfqMg7GKyhQmb056K7M3xszy/myH8w+B4RT+QXBQsvAOdc3XymqDDPHx1BgPgsdAA5SIifona89YtRATDzw==",
      "license": "Apache-2.0"
    },
+    "node_modules/diff": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-9.0.0.tgz",
+      "integrity": "sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw==",
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.3.1"
+      }
+    },
    "node_modules/dlv": {
      "version": "1.1.3",
      "resolved": "https://registry.npmjs.org/dlv/-/dlv-1.1.3.tgz",
@@ -2416,6 +2906,15 @@
        "node": ">=6"
      }
    },
+    "node_modules/fast-equals": {
+      "version": "5.4.0",
+      "resolved": "https://registry.npmjs.org/fast-equals/-/fast-equals-5.4.0.tgz",
+      "integrity": "sha512-jt2DW/aNFNwke7AUd+Z+e6pz39KO5rzdbbFCg2sGafS4mk13MI7Z8O5z9cADNn5lhGODIgLwug6TZO2ctf7kcw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
    "node_modules/fast-glob": {
      "version": "3.3.3",
      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.3.3.tgz",
@@ -2660,6 +3159,12 @@
      "integrity": "sha512-7ylylesZQ/PV29jhEDl3Ufjo6ZX7gCqJr5F7PKrqc93v7fzSymt1BpwEU8nAUXs8qzzvqhbjhK5QZg6Mt/HkBg==",
      "license": "MIT"
    },
+    "node_modules/linkifyjs": {
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/linkifyjs/-/linkifyjs-4.3.3.tgz",
+      "integrity": "sha512-P8aEP5U/D1/IlTY2OeYsErdwh9bGuLE30NcXtKEjgdHcahveQoQwM2yZNsioQHsWFz0P7KKudisbrzCgR0sDHg==",
+      "license": "MIT"
+    },
    "node_modules/loose-envify": {
      "version": "1.4.0",
      "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
@@ -2779,6 +3284,12 @@
        "node": ">=0.10.0"
      }
    },
+    "node_modules/normalize-wheel": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/normalize-wheel/-/normalize-wheel-1.0.1.tgz",
+      "integrity": "sha512-1OnlAPZ3zgrk8B91HyRj+eVv+kS5u+Z0SCsak6Xil/kmgEia50ga7zfkumayonZrImffAxPU/5WcyGhzetHNPA==",
+      "license": "BSD-3-Clause"
+    },
    "node_modules/object-assign": {
      "version": "4.1.1",
      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -2797,6 +3308,12 @@
        "node": ">= 6"
      }
    },
+    "node_modules/orderedmap": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/orderedmap/-/orderedmap-2.1.1.tgz",
+      "integrity": "sha512-TvAWxi0nDe1j/rtMcWcIj94+Ffe6n7zhow33h40SKxmsmozs6dz/e+EajymfoFcHd7sxNn8yHM8839uixMOV6g==",
+      "license": "MIT"
+    },
    "node_modules/path-parse": {
      "version": "1.0.7",
      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
@@ -2995,6 +3512,145 @@
      "integrity": "sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==",
      "license": "MIT"
    },
+    "node_modules/prosemirror-changeset": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/prosemirror-changeset/-/prosemirror-changeset-2.4.1.tgz",
+      "integrity": "sha512-96WBLhOaYhJ+kPhLg3uW359Tz6I/MfcrQfL4EGv4SrcqKEMC1gmoGrXHecPE8eOwTVCJ4IwgfzM8fFad25wNfw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-transform": "^1.0.0"
+      }
+    },
+    "node_modules/prosemirror-commands": {
+      "version": "1.7.1",
+      "resolved": "https://registry.npmjs.org/prosemirror-commands/-/prosemirror-commands-1.7.1.tgz",
+      "integrity": "sha512-rT7qZnQtx5c0/y/KlYaGvtG411S97UaL6gdp6RIZ23DLHanMYLyfGBV5DtSnZdthQql7W+lEVbpSfwtO8T+L2w==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-model": "^1.0.0",
+        "prosemirror-state": "^1.0.0",
+        "prosemirror-transform": "^1.10.2"
+      }
+    },
+    "node_modules/prosemirror-dropcursor": {
+      "version": "1.8.2",
+      "resolved": "https://registry.npmjs.org/prosemirror-dropcursor/-/prosemirror-dropcursor-1.8.2.tgz",
+      "integrity": "sha512-CCk6Gyx9+Tt2sbYk5NK0nB1ukHi2ryaRgadV/LvyNuO3ena1payM2z6Cg0vO1ebK8cxbzo41ku2DE5Axj1Zuiw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-state": "^1.0.0",
+        "prosemirror-transform": "^1.1.0",
+        "prosemirror-view": "^1.1.0"
+      }
+    },
+    "node_modules/prosemirror-gapcursor": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/prosemirror-gapcursor/-/prosemirror-gapcursor-1.4.1.tgz",
+      "integrity": "sha512-pMdYaEnjNMSwl11yjEGtgTmLkR08m/Vl+Jj443167p9eB3HVQKhYCc4gmHVDsLPODfZfjr/MmirsdyZziXbQKw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-keymap": "^1.0.0",
+        "prosemirror-model": "^1.0.0",
+        "prosemirror-state": "^1.0.0",
+        "prosemirror-view": "^1.0.0"
+      }
+    },
+    "node_modules/prosemirror-history": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/prosemirror-history/-/prosemirror-history-1.5.0.tgz",
+      "integrity": "sha512-zlzTiH01eKA55UAf1MEjtssJeHnGxO0j4K4Dpx+gnmX9n+SHNlDqI2oO1Kv1iPN5B1dm5fsljCfqKF9nFL6HRg==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-state": "^1.2.2",
+        "prosemirror-transform": "^1.0.0",
+        "prosemirror-view": "^1.31.0",
+        "rope-sequence": "^1.3.0"
+      }
+    },
+    "node_modules/prosemirror-inputrules": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/prosemirror-inputrules/-/prosemirror-inputrules-1.5.1.tgz",
+      "integrity": "sha512-7wj4uMjKaXWAQ1CDgxNzNtR9AlsuwzHfdFH1ygEHA2KHF2DOEaXl1CJfNPAKCg9qNEh4rum975QLaCiQPyY6Fw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-state": "^1.0.0",
+        "prosemirror-transform": "^1.0.0"
+      }
+    },
+    "node_modules/prosemirror-keymap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/prosemirror-keymap/-/prosemirror-keymap-1.2.3.tgz",
+      "integrity": "sha512-4HucRlpiLd1IPQQXNqeo81BGtkY8Ai5smHhKW9jjPKRc2wQIxksg7Hl1tTI2IfT2B/LgX6bfYvXxEpJl7aKYKw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-state": "^1.0.0",
+        "w3c-keyname": "^2.2.0"
+      }
+    },
+    "node_modules/prosemirror-model": {
+      "version": "1.25.9",
+      "resolved": "https://registry.npmjs.org/prosemirror-model/-/prosemirror-model-1.25.9.tgz",
+      "integrity": "sha512-pRTklkDDMMRopyoAcrr9wV/8g/RYgrLHBuJAb5hlEuYZRdm5yqmPjWId83fpBwPpSFqEdja0H7Dfd7z1X/npcA==",
+      "license": "MIT",
+      "dependencies": {
+        "orderedmap": "^2.0.0"
+      }
+    },
+    "node_modules/prosemirror-schema-list": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/prosemirror-schema-list/-/prosemirror-schema-list-1.5.1.tgz",
+      "integrity": "sha512-927lFx/uwyQaGwJxLWCZRkjXG0p48KpMj6ueoYiu4JX05GGuGcgzAy62dfiV8eFZftgyBUvLx76RsMe20fJl+Q==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-model": "^1.0.0",
+        "prosemirror-state": "^1.0.0",
+        "prosemirror-transform": "^1.7.3"
+      }
+    },
+    "node_modules/prosemirror-state": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/prosemirror-state/-/prosemirror-state-1.4.4.tgz",
+      "integrity": "sha512-6jiYHH2CIGbCfnxdHbXZ12gySFY/fz/ulZE333G6bPqIZ4F+TXo9ifiR86nAHpWnfoNjOb3o5ESi7J8Uz1jXHw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-model": "^1.0.0",
+        "prosemirror-transform": "^1.0.0",
+        "prosemirror-view": "^1.27.0"
+      }
+    },
+    "node_modules/prosemirror-tables": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/prosemirror-tables/-/prosemirror-tables-1.8.5.tgz",
+      "integrity": "sha512-V/0cDCsHKHe/tfWkeCmthNUcEp1IVO3p6vwN8XtwE9PZQLAZJigbw3QoraAdfJPir4NKJtNvOB8oYGKRl+t0Dw==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-keymap": "^1.2.3",
+        "prosemirror-model": "^1.25.4",
+        "prosemirror-state": "^1.4.4",
+        "prosemirror-transform": "^1.10.5",
+        "prosemirror-view": "^1.41.4"
+      }
+    },
+    "node_modules/prosemirror-transform": {
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/prosemirror-transform/-/prosemirror-transform-1.12.0.tgz",
+      "integrity": "sha512-GxboyN4AMIsoHNtz5uf2r2Ru551i5hWeCMD6E2Ib4Eogqoub0NflniaBPVQ4MrGE5yZ8JV9tUHg9qcZTTrcN4w==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-model": "^1.21.0"
+      }
+    },
+    "node_modules/prosemirror-view": {
+      "version": "1.41.9",
+      "resolved": "https://registry.npmjs.org/prosemirror-view/-/prosemirror-view-1.41.9.tgz",
+      "integrity": "sha512-clTunTX+eaLbr87L1V1QPheRlEQJyTlL3gXe9x3jQIk3rL0RVWxviDGz8tFaydwIVm+hKhYCyr+R/zBtWr9s6A==",
+      "license": "MIT",
+      "dependencies": {
+        "prosemirror-model": "^1.25.8",
+        "prosemirror-state": "^1.0.0",
+        "prosemirror-transform": "^1.1.0"
+      }
+    },
    "node_modules/queue-microtask": {
      "version": "1.2.3",
      "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
@@ -3020,6 +3676,7 @@
      "resolved": "https://registry.npmjs.org/react/-/react-18.3.1.tgz",
      "integrity": "sha512-wS+hAgJShR0KhEvPJArfuPVN1+Hz1t0Y6n5jLrGQbkb4urgPE/0Rve+1kMB1v/oWgHgm4WIcV+i7F2pTVj+2iQ==",
      "license": "MIT",
+      "peer": true,
      "dependencies": {
        "loose-envify": "^1.1.0"
      },
@@ -3040,6 +3697,19 @@
        "react": "^18.3.1"
      }
    },
+    "node_modules/react-easy-crop": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/react-easy-crop/-/react-easy-crop-6.0.2.tgz",
+      "integrity": "sha512-nY/YiNEuRjc851+/PsOR6Q7XoshmnXMl+oEOsxp3Ah0PrhECi5388jjRnHwsTFx3W0o2zPwvq85oljzUqZNpEw==",
+      "license": "MIT",
+      "dependencies": {
+        "normalize-wheel": "^1.0.1"
+      },
+      "peerDependencies": {
+        "react": ">=16.4.0",
+        "react-dom": ">=16.4.0"
+      }
+    },
    "node_modules/react-hook-form": {
      "version": "7.79.0",
      "resolved": "https://registry.npmjs.org/react-hook-form/-/react-hook-form-7.79.0.tgz",
@@ -3264,6 +3934,12 @@
        "fsevents": "~2.3.2"
      }
    },
+    "node_modules/rope-sequence": {
+      "version": "1.3.4",
+      "resolved": "https://registry.npmjs.org/rope-sequence/-/rope-sequence-1.3.4.tgz",
+      "integrity": "sha512-UT5EDe2cu2E/6O4igUr5PSFs23nvvukicWHx6GnOPlHAiiYbzNuCRQCuiUdHJQcqKalLKlrYJnjY0ySGsXNQXQ==",
+      "license": "MIT"
+    },
    "node_modules/run-parallel": {
      "version": "1.2.0",
      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
@@ -3505,6 +4181,19 @@
      "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
      "license": "0BSD"
    },
+    "node_modules/turndown": {
+      "version": "7.2.4",
+      "resolved": "https://registry.npmjs.org/turndown/-/turndown-7.2.4.tgz",
+      "integrity": "sha512-I8yFsfRzmzK0WV1pNNOA4A7y4RDfFxPRxb3t+e3ui14qSGOxGtiSP6GjeX+Y6CHb7HYaFj7ECUD7VE5kQMZWGQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@mixmark-io/domino": "^2.2.0"
+      },
+      "engines": {
+        "node": ">=18",
+        "npm": ">=9"
+      }
+    },
    "node_modules/typescript": {
      "version": "5.9.3",
      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
@@ -3599,6 +4288,15 @@
        }
      }
    },
+    "node_modules/use-sync-external-store": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/use-sync-external-store/-/use-sync-external-store-1.6.0.tgz",
+      "integrity": "sha512-Pp6GSwGP/NrPIrxVFAIkOQeyw8lFenOHijQWkUTrDvrF4ALqylP2C/KCkeS9dpUM3KvYRQhna5vt7IL95+ZQ9w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
    "node_modules/util-deprecate": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -3665,6 +4363,12 @@
        }
      }
    },
+    "node_modules/w3c-keyname": {
+      "version": "2.2.8",
+      "resolved": "https://registry.npmjs.org/w3c-keyname/-/w3c-keyname-2.2.8.tgz",
+      "integrity": "sha512-dpojBhNsCNN7T82Tm7k26A6G9ML3NkhDsnw9n/eoxSRlVBB4CEtIQ/KTCLI2Fwf3ataSXRhYFkQi3SlnFwPvPQ==",
+      "license": "MIT"
+    },
    "node_modules/yallist": {
      "version": "3.1.1",
      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -17,28 +17,39 @@
    "@radix-ui/react-slot": "^1.2.5",
    "@radix-ui/react-switch": "^1.3.0",
    "@tanstack/react-virtual": "^3.11.2",
+    "@tiptap/core": "^3.26.1",
+    "@tiptap/extension-image": "^3.26.1",
+    "@tiptap/extension-link": "^3.26.1",
+    "@tiptap/extension-placeholder": "^3.26.1",
+    "@tiptap/extension-underline": "^3.26.1",
+    "@tiptap/pm": "^3.26.1",
+    "@tiptap/react": "^3.26.1",
+    "@tiptap/starter-kit": "^3.26.1",
    "autoprefixer": "^10.5.0",
    "class-variance-authority": "^0.7.1",
    "clsx": "^2.1.1",
    "dayjs": "^1.11.13",
+    "diff": "^9.0.0",
    "dompurify": "^3.4.10",
    "lucide-react": "^1.18.0",
    "marked": "^18.0.5",
    "postcss": "^8.5.15",
-    "react": "^18.3.1",
    "react-dom": "^18.3.1",
+    "react-easy-crop": "^6.0.2",
    "react-hook-form": "^7.79.0",
    "react-router-dom": "^6.28.0",
    "sonner": "^2.0.7",
    "tailwind-merge": "^3.6.0",
    "tailwindcss": "^3.4.19",
    "tailwindcss-animate": "^1.0.7",
+    "turndown": "^7.2.4",
    "zod": "^4.4.3"
  },
  "devDependencies": {
    "@types/node": "^25.9.3",
    "@types/react": "^18.3.12",
    "@types/react-dom": "^18.3.1",
+    "@types/turndown": "^5.0.6",
    "@vitejs/plugin-react": "^4.3.4",
    "typescript": "^5.6.3",
    "vite": "^5.4.11"
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,9 +1,16 @@
 import { lazy, Suspense } from 'react';
-import { BrowserRouter, Routes, Route } from 'react-router-dom';
+import {
+  createBrowserRouter,
+  createRoutesFromElements,
+  RouterProvider,
+  Route,
+  Navigate,
+} from 'react-router-dom';
 import './styles/global.css';
 import { AuthProvider } from './hooks/useAuth';
 import { ThemeProvider } from './hooks/useTheme';
 import MainLayout from './layouts/MainLayout';
+import AdminLayout from './layouts/AdminLayout';
 import ErrorBoundary from './components/ErrorBoundary';
 import PageLoader from './components/PageLoader';
 import { Toaster } from './components/ui/sonner';
@@ -16,27 +23,45 @@ const ComposePage = lazy(() => import('./pages/ComposePage'));
 const BoardsManagePage = lazy(() => import('./pages/BoardsManagePage'));
 const ProfilePage = lazy(() => import('./pages/ProfilePage'));
 const FavoritesPage = lazy(() => import('./pages/FavoritesPage'));
+const AdminDashboardPage = lazy(() => import('./pages/admin/AdminDashboardPage'));
+const AdminPostsPage = lazy(() => import('./pages/admin/AdminPostsPage'));
+const AdminCommentsPage = lazy(() => import('./pages/admin/AdminCommentsPage'));
+const AdminUsersPage = lazy(() => import('./pages/admin/AdminUsersPage'));
+const AdminSettingsPage = lazy(() => import('./pages/admin/AdminSettingsPage'));
+
+const router = createBrowserRouter(
+  createRoutesFromElements(
+    <>
+      <Route path="/login" element={<Suspense fallback={<PageLoader />}><LoginPage /></Suspense>} />
+      <Route path="/register" element={<Suspense fallback={<PageLoader />}><RegisterPage /></Suspense>} />
+      <Route path="/boards" element={<Navigate to="/admin/boards" replace />} />
+      <Route path="/admin" element={<AdminLayout />}>
+        <Route index element={<Navigate to="/admin/dashboard" replace />} />
+        <Route path="dashboard" element={<Suspense fallback={<PageLoader />}><AdminDashboardPage /></Suspense>} />
+        <Route path="boards" element={<Suspense fallback={<PageLoader />}><BoardsManagePage /></Suspense>} />
+        <Route path="posts" element={<Suspense fallback={<PageLoader />}><AdminPostsPage /></Suspense>} />
+        <Route path="comments" element={<Suspense fallback={<PageLoader />}><AdminCommentsPage /></Suspense>} />
+        <Route path="users" element={<Suspense fallback={<PageLoader />}><AdminUsersPage /></Suspense>} />
+        <Route path="settings" element={<Suspense fallback={<PageLoader />}><AdminSettingsPage /></Suspense>} />
+      </Route>
+      <Route element={<MainLayout />}>
+        <Route path="/" element={<HomePage />} />
+        <Route path="/post/:id" element={<PostDetailPage />} />
+        <Route path="/post/:id/edit" element={<ComposePage />} />
+        <Route path="/compose" element={<ComposePage />} />
+        <Route path="/profile" element={<ProfilePage />} />
+        <Route path="/favorites" element={<FavoritesPage />} />
+      </Route>
+    </>,
+  ),
+);

 export default function App() {
  return (
    <ThemeProvider>
      <AuthProvider>
        <ErrorBoundary>
-          <BrowserRouter>
-            <Routes>
-              <Route path="/login" element={<Suspense fallback={<PageLoader />}><LoginPage /></Suspense>} />
-              <Route path="/register" element={<Suspense fallback={<PageLoader />}><RegisterPage /></Suspense>} />
-              <Route element={<MainLayout />}>
-                <Route path="/" element={<HomePage />} />
-                <Route path="/post/:id" element={<PostDetailPage />} />
-                <Route path="/post/:id/edit" element={<ComposePage />} />
-                <Route path="/compose" element={<ComposePage />} />
-                <Route path="/boards" element={<BoardsManagePage />} />
-                <Route path="/profile" element={<ProfilePage />} />
-                <Route path="/favorites" element={<FavoritesPage />} />
-              </Route>
-            </Routes>
-          </BrowserRouter>
+          <RouterProvider router={router} />
          <Toaster />
        </ErrorBoundary>
      </AuthProvider>
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -1,4 +1,4 @@
-import type { User, Board, PostItem, Comment, Notification, OnlineUser, OnlineStats, ForumStats } from './types';
+import type { User, Board, PostItem, Comment, Notification, OnlineUser, OnlineStats, ForumStats, AdminDashboard, AdminSettings, ForumLimits, ForumLimitsPublic, PostDetailResponse, PostRevision } from './types';

 const BASE = '';

@@ -24,13 +24,17 @@ async function request<T>(url: string, opts: RequestInit = {}): Promise<T> {
 export const api = {
  me: () => request<{ user: User | null }>('/api/me'),
  stats: () => request<ForumStats>('/api/stats'),
+  forumLimits: () => request<ForumLimitsPublic>('/api/forum-limits'),
  boards: () => request<{ boards: Board[] }>('/api/boards'),
  posts: (params: Record<string, string | number>) => {
    const q = new URLSearchParams(params as Record<string, string>).toString();
    return request<{ posts: PostItem[]; total: number; page: number; has_more: boolean }>(`/api/posts?${q}`);
  },
  hotPosts: () => request<{ posts: PostItem[] }>('/api/posts/hot'),
-  post: (id: number) => request<{ post: PostItem; comment_count: number; liked: boolean; favorited: boolean }>(`/api/posts/${id}`),
+  post: (id: number, opts?: { skipView?: boolean }) => {
+    const q = opts?.skipView ? '?skip_view=1' : '';
+    return request<PostDetailResponse>(`/api/posts/${id}${q}`);
+  },
  comments: (id: number, myIds?: number[]) => {
    const q = myIds?.length ? `?my_ids=${myIds.join(',')}` : '';
    return request<{ comments: Comment[]; total: number }>(`/api/posts/${id}/comments${q}`);
@@ -39,11 +43,59 @@ export const api = {
  online: () => request<OnlineStats>('/api/online'),
  presence: () => request<Pick<OnlineStats, 'count' | 'members' | 'guests'>>('/api/presence', { method: 'POST' }),
  favorites: () => request<{ favorites: unknown[]; total: number }>('/api/favorites'),
-  createBoard: (body: { name: string; description: string; sort_order: number }) =>
+  createBoard: (body: { name: string; description: string; sort_order: number; icon?: string; color_index?: number }) =>
    request<{ board: Board }>('/api/admin/boards', { method: 'POST', body: JSON.stringify(body) }),
-  updateBoard: (id: number, body: { name: string; description: string; sort_order: number }) =>
+  updateBoard: (id: number, body: { name: string; description: string; sort_order: number; icon?: string; color_index?: number }) =>
    request<{ board: Board }>(`/api/admin/boards/${id}`, { method: 'PUT', body: JSON.stringify(body) }),
  deleteBoard: (id: number) => request(`/api/admin/boards/${id}`, { method: 'DELETE' }),
+  // 管理后台 API
+  adminDashboard: () => request<AdminDashboard>('/api/admin/dashboard'),
+  adminSettings: () => request<AdminSettings>('/api/admin/settings'),
+  adminPosts: (params: { page?: number; keyword?: string }) => {
+    const q = new URLSearchParams();
+    if (params.page) q.set('page', String(params.page));
+    if (params.keyword) q.set('keyword', params.keyword);
+    const qs = q.toString();
+    return request<{ posts: PostItem[]; total: number; page: number; total_pages: number }>(
+      `/api/admin/posts${qs ? `?${qs}` : ''}`,
+    );
+  },
+  adminPinPost: (id: number, pinned: boolean) =>
+    request<{ message: string; pinned: boolean }>(`/api/admin/posts/${id}/pin`, {
+      method: 'POST', body: JSON.stringify({ pinned }),
+    }),
+  adminLockPost: (id: number, locked: boolean) =>
+    request<{ message: string; edit_locked: boolean }>(`/api/admin/posts/${id}/lock`, {
+      method: 'POST', body: JSON.stringify({ locked }),
+    }),
+  adminUpdateForumSettings: (body: ForumLimits) =>
+    request<{ message: string; limits: ForumLimits }>('/api/admin/settings/forum', {
+      method: 'PUT', body: JSON.stringify(body),
+    }),
+  adminUpdateFilterWords: (content: string) =>
+    request<{ message: string; word_count: number }>('/api/admin/settings/filter-words', {
+      method: 'PUT', body: JSON.stringify({ content }),
+    }),
+  postRevisions: (id: number) =>
+    request<{ revisions: PostRevision[] }>(`/api/posts/${id}/revisions`),
+  postRevision: (id: number, revId: number) =>
+    request<{ revision: PostRevision }>(`/api/posts/${id}/revisions/${revId}`),
+  adminDeletePost: (id: number) => request(`/api/admin/posts/${id}`, { method: 'DELETE' }),
+  adminComments: (page = 1) =>
+    request<{ comments: Comment[]; total: number; page: number; total_pages: number }>(
+      `/api/admin/comments?page=${page}`,
+    ),
+  adminDeleteComment: (id: number) => request(`/api/admin/comments/${id}`, { method: 'DELETE' }),
+  adminUsers: (page = 1) =>
+    request<{ users: User[]; total: number; page: number; total_pages: number }>(
+      `/api/admin/users?page=${page}`,
+    ),
+  adminBanUser: (id: number, banned: boolean) =>
+    request<{ message: string; banned: boolean }>(`/api/admin/users/${id}/ban`, {
+      method: 'POST', body: JSON.stringify({ banned }),
+    }),
+  adminBackup: () =>
+    request<{ message: string; filename: string; download: string }>('/api/admin/backup', { method: 'POST' }),
  updateNickname: (nickname: string) => {
    const fd = new FormData();
    fd.append('nickname', nickname);
@@ -60,6 +112,11 @@ export const api = {
    fd.append('avatar', file);
    return request<{ avatar: string }>('/api/profile/avatar', { method: 'POST', body: fd, headers: {} });
  },
+  uploadPostImage: (file: File) => {
+    const fd = new FormData();
+    fd.append('image', file);
+    return request<{ url: string }>('/api/uploads/image', { method: 'POST', body: fd, headers: {} });
+  },
  createPost: (data: { board_id: string; title: string; content: string; tags?: string }) => {
    const fd = new FormData();
    fd.append('board_id', data.board_id);
--- a/frontend/src/api/types.ts
+++ b/frontend/src/api/types.ts
@@ -4,12 +4,16 @@ export interface User {
  nickname: string;
  avatar: string;
  role: 'user' | 'admin';
+  banned?: boolean;
+  created_at?: string;
 }

 export interface Board {
  id: number;
  name: string;
  description: string;
+  icon?: string;
+  color_index?: number;
  sort_order: number;
  post_count?: number;
 }
@@ -28,14 +32,39 @@ export interface PostItem {
  content?: string;
  tags: string;
  pinned: boolean;
+  edit_locked?: boolean;
  like_count: number;
  view_count: number;
  comment_count: number;
+  last_reply_at?: string;
  created_at: string;
+  updated_at?: string;
  board?: Board;
  user?: User;
 }

+export interface PostRevision {
+  id: number;
+  post_id: number;
+  editor_id: number;
+  title: string;
+  content: string;
+  tags: string;
+  created_at: string;
+  editor?: User;
+}
+
+export interface PostDetailResponse {
+  post: PostItem;
+  comment_count: number;
+  liked: boolean;
+  favorited: boolean;
+  can_edit?: boolean;
+  edit_block_reason?: string;
+  is_edited?: boolean;
+  post_edit_window_hours?: number;
+}
+
 export interface Comment {
  id: number;
  post_id: number;
@@ -50,9 +79,71 @@ export interface Comment {
  content_hidden?: boolean;
  created_at: string;
  user?: User;
+  post?: PostItem;
  reply_target?: Comment;
 }

+export interface AdminDashboard {
+  users: number;
+  posts: number;
+  boards: number;
+  comments: number;
+  online: number;
+  recent_posts: PostItem[];
+}
+
+export interface ForumLimits {
+  post_edit_window_hours: number;
+  rate_limit_post: number;
+  rate_limit_comment: number;
+  rate_limit_register: number;
+  rate_limit_login: number;
+  rate_limit_window_sec: number;
+  post_title_max: number;
+  post_tags_max: number;
+  post_content_max: number;
+  comment_max: number;
+  search_keyword_min: number;
+  search_keyword_max: number;
+  page_size_default: number;
+  page_size_max: number;
+  feed_max_pages: number;
+  feed_max_items: number;
+  password_min_len: number;
+  avatar_max_mb: number;
+}
+
+export interface ForumLimitsPublic {
+  post_title_max: number;
+  post_tags_max: number;
+  post_content_max: number;
+  comment_max: number;
+  search_keyword_min: number;
+  search_keyword_max: number;
+  page_size_default: number;
+  feed_max_pages: number;
+  feed_max_items: number;
+  password_min_len: number;
+  avatar_max_mb: number;
+}
+
+export interface AdminSettings {
+  filter_path: string;
+  data_dir: string;
+  db_path: string;
+  port: number;
+  limits: ForumLimits;
+  filter_words: string;
+  filter_word_count: number;
+}
+
+export interface Paginated<T> {
+  total: number;
+  page: number;
+  total_pages: number;
+  items: T;
+}
+
 export interface Notification {
  id: number;
  title: string;
--- a/frontend/src/components/ArticleEditor.tsx
+++ b/frontend/src/components/ArticleEditor.tsx
@@ -1,16 +1,40 @@
 import {
-  useState, useRef, useEffect, useCallback, useImperativeHandle, forwardRef, useMemo, type ReactNode,
+  useRef, useEffect, useImperativeHandle, forwardRef, useCallback, useState, useMemo, type ReactNode,
 } from 'react';
+import { useEditor, EditorContent, type Editor } from '@tiptap/react';
+import { TextSelection } from '@tiptap/pm/state';
+import StarterKit from '@tiptap/starter-kit';
+import Link from '@tiptap/extension-link';
+import Image from '@tiptap/extension-image';
+import Placeholder from '@tiptap/extension-placeholder';
+import Underline from '@tiptap/extension-underline';
+import DOMPurify from 'dompurify';
 import {
-  Bold, Italic, Strikethrough, Link, Code, Quote,
-  List, ListOrdered, Image, Eye, Pencil, Minus, LockKeyhole,
+  Bold, Italic, Underline as UnderlineIcon, Strikethrough, Link as LinkIcon, Code, Quote,
+  List, ListOrdered, Image as ImageIcon, Minus, LockKeyhole,
+  FileCode, PenLine, Maximize2, Minimize2,
 } from 'lucide-react';
-import { markdownToHtml, countWords } from '../utils/markdown';
+import { POST_CONTENT_PURIFY_CONFIG } from '../utils/postContent';
 import { renderPostContentHtml } from '../utils/postContent';
+import { htmlToMarkdown, markdownToHtml } from '../utils/markdownContent';
+import { handleMarkdownTabKey, insertAtCursor } from '../utils/markdownIndent';
+import {
+  wrapMarkdownSelection,
+  prefixMarkdownLines,
+  cycleMarkdownHeading,
+  insertMarkdownMembersOnly,
+  insertMarkdownLink,
+} from '../utils/markdownFormat';
+import { countWords } from '../utils/text';
+import { api } from '../api/client';
+import { notify } from '@/lib/notify';
+import { MembersOnly } from './editor/MembersOnlyExtension';
+import { TabIndent } from './editor/TabIndentExtension';
+import { ArticleLinkDialog } from './editor/ArticleLinkDialog';
+import { Tooltip } from './ui/Tooltip';

 export interface ArticleEditorHandle {
  getHTML: () => string;
-  getMarkdown: () => string;
  isEmpty: () => boolean;
  focus: () => void;
 }
@@ -21,259 +45,476 @@ interface Props {
  placeholder?: string;
 }

-type ViewMode = 'edit' | 'preview' | 'split';
+type EditorMode = 'rich' | 'markdown';
+type LinkTarget = 'rich' | 'markdown';

 interface ToolBtn {
  icon: ReactNode;
  title: string;
+  hint?: string;
+  align?: 'start' | 'center' | 'end';
+  active?: boolean;
+  className?: string;
  action: () => void;
 }

-/** 去掉行首已有的 Markdown 块级前缀 */
-function stripLinePrefix(line: string): string {
-  return line
-    .replace(/^\r/, '')
-    .replace(/^#{1,6}\s*/, '')
-    .replace(/^>\s*/, '')
-    .replace(/^[-*+]\s*/, '')
-    .replace(/^\d+\.\s*/, '');
+const MEMBERS_ONLY_PLACEHOLDER = '在此输入仅登录用户可见的内容…';
+
+/** 净化编辑器 HTML，保留 members-only 自定义标签 */
+function sanitizeHtml(html: string): string {
+  return DOMPurify.sanitize(html, POST_CONTENT_PURIFY_CONFIG);
+}
+
+/** 判断编辑器内容是否为空 */
+function isEditorEmpty(editor: Editor): boolean {
+  return editor.state.doc.textContent.trim().length === 0;
+}
+
+/** 标题循环：正文 → H2 → H3 → … → H6 → 正文 */
+function cycleHeading(editor: Editor) {
+  for (let level = 2; level <= 6; level += 1) {
+    if (editor.isActive('heading', { level })) {
+      if (level === 6) {
+        editor.chain().focus().setParagraph().run();
+      } else {
+        editor.chain().focus().toggleHeading({ level: (level + 1) as 2 | 3 | 4 | 5 | 6 }).run();
+      }
+      return;
+    }
+  }
+  editor.chain().focus().toggleHeading({ level: 2 }).run();
+}
+
+/** 触发图片文件选择并上传 */
+async function uploadPostImageFile(): Promise<string | null> {
+  return new Promise(resolve => {
+    const input = document.createElement('input');
+    input.type = 'file';
+    input.accept = 'image/jpeg,image/png,image/gif,image/webp';
+    input.onchange = async () => {
+      const file = input.files?.[0];
+      if (!file) {
+        resolve(null);
+        return;
+      }
+      try {
+        const { url } = await api.uploadPostImage(file);
+        resolve(url);
+      } catch (e: unknown) {
+        notify.error(e instanceof Error ? e.message : '图片上传失败');
+        resolve(null);
+      }
+    };
+    input.click();
+  });
+}
+
+/** 渲染工具栏按钮列表 */
+function renderToolButtons(tools: ToolBtn[]) {
+  return tools.map((t, i) => (
+    <span key={i} className={t.className === 'article-tool-btn--members' ? 'article-editor-tools-members' : undefined}>
+      {t.className === 'article-tool-btn--members' ? (
+        <span className="article-editor-tools-sep" aria-hidden="true" />
+      ) : null}
+      <Tooltip content={t.title} hint={t.hint} align={t.align} side="bottom">
+        <button
+          type="button"
+          className={`article-tool-btn${t.active ? ' active' : ''}${t.className ? ` ${t.className}` : ''}`}
+          onMouseDown={e => e.preventDefault()}
+          onClick={t.action}
+        >
+          {t.icon}
+        </button>
+      </Tooltip>
+    </span>
+  ));
 }

 const ArticleEditor = forwardRef<ArticleEditorHandle, Props>(function ArticleEditor(
  { value, onChange, placeholder = '在此撰写正文…' },
  ref,
 ) {
-  const textareaRef = useRef<HTMLTextAreaElement>(null);
-  const selectionRef = useRef({ start: 0, end: 0 });
-  const [viewMode, setViewMode] = useState<ViewMode>('split');
-  const [previewHtml, setPreviewHtml] = useState('');
+  const isInternalUpdate = useRef(false);
+  const lastValueRef = useRef(value);
+  const [, setEditorTick] = useState(0);
+  const [mode, setMode] = useState<EditorMode>('rich');
+  const [fullscreen, setFullscreen] = useState(false);
+  const [markdownSource, setMarkdownSource] = useState('');
+  const [linkDialogOpen, setLinkDialogOpen] = useState(false);
+  const [linkDialogUrl, setLinkDialogUrl] = useState('');
+  const [linkTarget, setLinkTarget] = useState<LinkTarget>('rich');
+  const markdownRef = useRef<HTMLTextAreaElement>(null);

-  useImperativeHandle(ref, () => ({
-    getHTML: () => markdownToHtml(value),
-    getMarkdown: () => value,
-    isEmpty: () => value.trim().length === 0,
-    focus: () => textareaRef.current?.focus(),
-  }));
+  const editor = useEditor({
+    extensions: [
+      StarterKit.configure({
+        heading: { levels: [2, 3, 4, 5, 6] },
+      }),
+      Underline,
+      Link.configure({
+        openOnClick: false,
+        autolink: true,
+        defaultProtocol: 'https',
+      }),
+      Image.configure({ inline: false, allowBase64: false }),
+      Placeholder.configure({
+        placeholder: ({ node }) => {
+          if (node.type.name === 'paragraph' && node.parent?.type.name === 'membersOnly') {
+            return MEMBERS_ONLY_PLACEHOLDER;
+          }
+          return placeholder;
+        },
+        includeChildren: true,
+      }),
+      MembersOnly,
+      TabIndent,
+    ],
+    content: sanitizeHtml(value) || '',
+    onUpdate: ({ editor: ed }) => {
+      const html = sanitizeHtml(ed.getHTML());
+      isInternalUpdate.current = true;
+      lastValueRef.current = html;
+      onChange(html);

-  const saveSelection = useCallback(() => {
-    const ta = textareaRef.current;
-    if (!ta) return;
-    selectionRef.current = { start: ta.selectionStart, end: ta.selectionEnd };
-  }, []);
+      // 清空后折叠选区，避免空文档残留全选高亮
+      if (isEditorEmpty(ed) && !ed.state.selection.empty) {
+        ed.commands.setTextSelection(1);
+      }
+    },
+    onSelectionUpdate: () => {
+      setEditorTick(t => t + 1);
+    },
+    onTransaction: () => {
+      setEditorTick(t => t + 1);
+    },
+    editorProps: {
+      attributes: {
+        class: 'article-prosemirror post-detail-content',
+        spellcheck: 'false',
+      },
+      handleKeyDown: (view, event) => {
+        if ((event.ctrlKey || event.metaKey) && event.key.toLowerCase() === 'a') {
+          if (!view.state.doc.textContent.trim()) {
+            event.preventDefault();
+            view.dispatch(view.state.tr.setSelection(
+              TextSelection.create(view.state.doc, 1),
+            ));
+            return true;
+          }
+        }
+        return false;
+      },
+    },
+  });

-  const getSelection = useCallback(() => {
-    const ta = textareaRef.current;
-    if (ta && document.activeElement === ta) {
-      return { start: ta.selectionStart, end: ta.selectionEnd };
-    }
-    return selectionRef.current;
-  }, []);
-
-  const restoreSelection = useCallback((start: number, end = start) => {
-    requestAnimationFrame(() => {
-      const ta = textareaRef.current;
-      if (!ta) return;
-      ta.focus();
-      ta.setSelectionRange(start, end);
-      selectionRef.current = { start, end };
-    });
-  }, []);
-
-  // 实时预览，短 debounce 保证流畅
+  // 外部 value 变更时同步到编辑器（如加载已有帖子）
  useEffect(() => {
-    const t = setTimeout(() => setPreviewHtml(markdownToHtml(value)), 60);
-    return () => clearTimeout(t);
-  }, [value]);
-
-  // 编辑区随内容向下延伸，最小高度撑满视口剩余空间
-  const adjustTextareaHeight = useCallback(() => {
-    const ta = textareaRef.current;
-    if (!ta || viewMode === 'preview') return;
-    ta.style.height = '0px';
-    const contentHeight = ta.scrollHeight;
-    const top = ta.getBoundingClientRect().top;
-    const minHeight = Math.max(280, window.innerHeight - top - 56);
-    ta.style.height = `${Math.max(minHeight, contentHeight)}px`;
-  }, [viewMode]);
-
-  useEffect(() => {
-    adjustTextareaHeight();
-  }, [value, viewMode, adjustTextareaHeight]);
-
-  useEffect(() => {
-    const onResize = () => adjustTextareaHeight();
-    window.addEventListener('resize', onResize);
-    return () => window.removeEventListener('resize', onResize);
-  }, [adjustTextareaHeight]);
-
-  const insertAtCursor = useCallback((before: string, after = '', placeholderText = '') => {
-    const ta = textareaRef.current;
-    if (!ta) return;
-    const { start, end } = getSelection();
-    const selected = value.slice(start, end) || placeholderText;
-    const next = value.slice(0, start) + before + selected + after + value.slice(end);
-    onChange(next);
-    restoreSelection(start + before.length + selected.length);
-  }, [value, onChange, getSelection, restoreSelection]);
-
-  const wrapLine = useCallback((prefix: string) => {
-    const ta = textareaRef.current;
-    if (!ta) return;
-    const { start } = getSelection();
-    const lineStart = value.lastIndexOf('\n', start - 1) + 1;
-    const lineEnd = value.indexOf('\n', start);
-    const end = lineEnd === -1 ? value.length : lineEnd;
-    const line = value.slice(lineStart, end);
-    const stripped = stripLinePrefix(line);
-    const next = value.slice(0, lineStart) + prefix + stripped + value.slice(end);
-    onChange(next);
-    restoreSelection(lineStart + prefix.length + stripped.length);
-  }, [value, onChange, getSelection, restoreSelection]);
-
-  /** 标题：无 → H2 → H3 → … → H6 → 取消 */
-  const toggleHeading = useCallback(() => {
-    const ta = textareaRef.current;
-    if (!ta) return;
-    const { start } = getSelection();
-    const lineStart = value.lastIndexOf('\n', start - 1) + 1;
-    const lineEnd = value.indexOf('\n', start);
-    const end = lineEnd === -1 ? value.length : lineEnd;
-    const line = value.slice(lineStart, end);
-    const normalized = line.replace(/^\r/, '');
-    const match = normalized.match(/^(#{1,6})\s+(.*)$/);
-
-    let nextLine: string;
-    if (match) {
-      const level = match[1].length;
-      const text = match[2];
-      nextLine = level >= 6 ? text : `${'#'.repeat(level + 1)} ${text}`;
-    } else {
-      nextLine = `## ${stripLinePrefix(normalized)}`;
-    }
-
-    const next = value.slice(0, lineStart) + nextLine + value.slice(end);
-    onChange(next);
-    const cursor = lineStart + nextLine.length;
-    restoreSelection(cursor);
-  }, [value, onChange, getSelection, restoreSelection]);
-
-  /** 包裹为仅登录用户可见区块 */
-  const wrapMembersOnly = useCallback(() => {
-    const { start, end } = getSelection();
-    if (start !== end) {
-      const selected = value.slice(start, end);
-      const block = `\n:::members\n${selected}\n:::\n`;
-      const next = value.slice(0, start) + block + value.slice(end);
-      onChange(next);
-      restoreSelection(start + ':::members\n'.length + 1);
+    if (!editor || mode !== 'rich') return;
+    if (isInternalUpdate.current) {
+      isInternalUpdate.current = false;
      return;
    }
-    insertAtCursor('\n:::members\n', '\n:::\n', '在此输入仅登录用户可见的内容…');
-  }, [value, onChange, getSelection, restoreSelection, insertAtCursor]);
+    const next = sanitizeHtml(value);
+    if (next === lastValueRef.current) return;
+    lastValueRef.current = next;
+    editor.commands.setContent(next || '', { emitUpdate: false });
+  }, [value, editor, mode]);

-  const tools: ToolBtn[] = [
-    { icon: <strong>H</strong>, title: '标题（H2，再次点击升级）', action: toggleHeading },
-    { icon: <Bold size={15} />, title: '加粗', action: () => insertAtCursor('**', '**', '加粗') },
-    { icon: <Italic size={15} />, title: '斜体', action: () => insertAtCursor('*', '*', '斜体') },
-    { icon: <Strikethrough size={15} />, title: '删除线', action: () => insertAtCursor('~~', '~~', '删除') },
-    { icon: <Minus size={15} />, title: '分割线', action: () => insertAtCursor('\n\n---\n\n') },
-    { icon: <Quote size={15} />, title: '引用', action: () => wrapLine('> ') },
-    { icon: <List size={15} />, title: '无序列表', action: () => wrapLine('- ') },
-    { icon: <ListOrdered size={15} />, title: '有序列表', action: () => wrapLine('1. ') },
-    { icon: <Code size={15} />, title: '代码块', action: () => insertAtCursor('\n```\n', '\n```\n', 'code') },
-    { icon: <Link size={15} />, title: '链接', action: () => insertAtCursor('[', '](url)', '链接文字') },
-    { icon: <Image size={15} />, title: '图片', action: () => insertAtCursor('![', '](url)', '描述') },
-    { icon: <LockKeyhole size={15} />, title: '登录可见（选中文字后点击可包裹）', action: wrapMembersOnly },
-  ];
+  // 全屏时锁定页面滚动，Esc 退出
+  useEffect(() => {
+    if (!fullscreen) return undefined;

-  const displayPreviewHtml = useMemo(() => {
-    if (!value.trim()) {
-      return `<p class="article-preview-placeholder">${placeholder}</p>`;
+    const prevOverflow = document.body.style.overflow;
+    document.body.style.overflow = 'hidden';
+
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') setFullscreen(false);
+    };
+    window.addEventListener('keydown', onKeyDown);
+
+    return () => {
+      document.body.style.overflow = prevOverflow;
+      window.removeEventListener('keydown', onKeyDown);
+    };
+  }, [fullscreen]);
+
+  useImperativeHandle(ref, () => ({
+    getHTML: () => {
+      if (mode === 'markdown') {
+        return sanitizeHtml(markdownToHtml(markdownSource));
+      }
+      return editor ? sanitizeHtml(editor.getHTML()) : value;
+    },
+    isEmpty: () => {
+      if (mode === 'markdown') {
+        return markdownSource.trim().length === 0;
+      }
+      return editor ? isEditorEmpty(editor) : !value.trim();
+    },
+    focus: () => {
+      if (mode === 'markdown') {
+        markdownRef.current?.focus();
+        return;
+      }
+      editor?.commands.focus();
+    },
+  }), [editor, value, mode, markdownSource]);
+
+  const handleMarkdownChange = useCallback((next: string) => {
+    setMarkdownSource(next);
+    const html = sanitizeHtml(markdownToHtml(next));
+    isInternalUpdate.current = true;
+    lastValueRef.current = html;
+    onChange(html);
+  }, [onChange]);
+
+  const openLinkDialog = useCallback((target: LinkTarget) => {
+    if (target === 'rich') {
+      if (!editor) return;
+      const prev = editor.getAttributes('link').href as string | undefined;
+      setLinkDialogUrl(prev ?? '');
+    } else {
+      setLinkDialogUrl('');
    }
-    return renderPostContentHtml(previewHtml, true);
-  }, [value, previewHtml, placeholder]);
+    setLinkTarget(target);
+    setLinkDialogOpen(true);
+  }, [editor]);

-  const words = countWords(value);
-  const showEdit = viewMode === 'edit' || viewMode === 'split';
-  const showPreview = viewMode === 'preview' || viewMode === 'split';
+  const applyLink = useCallback((url: string) => {
+    if (linkTarget === 'markdown') {
+      const textarea = markdownRef.current;
+      if (!textarea || !url) return;
+      insertMarkdownLink(textarea, markdownSource, url, handleMarkdownChange);
+      return;
+    }
+    if (!editor) return;
+    if (!url) {
+      editor.chain().focus().extendMarkRange('link').unsetLink().run();
+      return;
+    }
+    editor.chain().focus().extendMarkRange('link').setLink({ href: url }).run();
+  }, [editor, linkTarget, markdownSource, handleMarkdownChange]);
+
+  const removeLink = useCallback(() => {
+    if (!editor) return;
+    editor.chain().focus().extendMarkRange('link').unsetLink().run();
+  }, [editor]);
+
+  const setImage = useCallback(async () => {
+    if (!editor) return;
+    const url = await uploadPostImageFile();
+    if (url) {
+      editor.chain().focus().setImage({ src: url }).run();
+    }
+  }, [editor]);
+
+  const wrapMembersOnly = useCallback(() => {
+    if (!editor) return;
+
+    if (editor.isActive('membersOnly')) {
+      editor.chain().focus().exitMembersOnly().run();
+      return;
+    }
+
+    const { from, to, empty } = editor.state.selection;
+    if (!empty && from !== to) {
+      editor.chain().focus().wrapMembersOnly().run();
+      return;
+    }
+    editor.chain().focus().insertMembersOnly().run();
+  }, [editor]);
+
+  const switchToMarkdown = useCallback(() => {
+    if (!editor) return;
+    const html = sanitizeHtml(editor.getHTML());
+    lastValueRef.current = html;
+    setMarkdownSource(htmlToMarkdown(html));
+    setMode('markdown');
+  }, [editor]);
+
+  const switchToRich = useCallback(() => {
+    const html = sanitizeHtml(markdownToHtml(markdownSource));
+    lastValueRef.current = html;
+    isInternalUpdate.current = true;
+    onChange(html);
+    if (editor) {
+      editor.commands.setContent(html || '', { emitUpdate: false });
+    }
+    setMode('rich');
+  }, [editor, markdownSource, onChange]);
+
+  const withMarkdown = useCallback((fn: (
+    textarea: HTMLTextAreaElement,
+    value: string,
+    onChange: (v: string) => void,
+  ) => void) => () => {
+    const textarea = markdownRef.current;
+    if (!textarea) return;
+    fn(textarea, markdownSource, handleMarkdownChange);
+  }, [markdownSource, handleMarkdownChange]);
+
+  const insertMarkdownImage = useCallback(async () => {
+    const textarea = markdownRef.current;
+    if (!textarea) return;
+    const url = await uploadPostImageFile();
+    if (!url) return;
+    insertAtCursor(textarea, markdownSource, `\n\n![图片](${url})\n\n`, handleMarkdownChange);
+  }, [markdownSource, handleMarkdownChange]);
+
+  const markdownPreviewHtml = useMemo(
+    () => renderPostContentHtml(sanitizeHtml(markdownToHtml(markdownSource)), true),
+    [markdownSource],
+  );
+
+  const buildRichTools = useCallback((): ToolBtn[] => {
+    if (!editor) return [];
+    return [
+      { icon: <strong>H</strong>, title: '标题', hint: 'H2 → H6 循环', active: editor.isActive('heading'), action: () => cycleHeading(editor) },
+      { icon: <Bold size={15} />, title: '加粗', active: editor.isActive('bold'), action: () => editor.chain().focus().toggleBold().run() },
+      { icon: <Italic size={15} />, title: '斜体', active: editor.isActive('italic'), action: () => editor.chain().focus().toggleItalic().run() },
+      { icon: <UnderlineIcon size={15} />, title: '下划线', active: editor.isActive('underline'), action: () => editor.chain().focus().toggleUnderline().run() },
+      { icon: <Strikethrough size={15} />, title: '删除线', active: editor.isActive('strike'), action: () => editor.chain().focus().toggleStrike().run() },
+      { icon: <Minus size={15} />, title: '分割线', action: () => editor.chain().focus().setHorizontalRule().run() },
+      { icon: <Quote size={15} />, title: '引用', active: editor.isActive('blockquote'), action: () => editor.chain().focus().toggleBlockquote().run() },
+      { icon: <List size={15} />, title: '无序列表', active: editor.isActive('bulletList'), action: () => editor.chain().focus().toggleBulletList().run() },
+      { icon: <ListOrdered size={15} />, title: '有序列表', active: editor.isActive('orderedList'), action: () => editor.chain().focus().toggleOrderedList().run() },
+      { icon: <Code size={15} />, title: '代码块', active: editor.isActive('codeBlock'), action: () => editor.chain().focus().toggleCodeBlock().run() },
+      { icon: <LinkIcon size={15} />, title: '链接', active: editor.isActive('link'), action: () => openLinkDialog('rich') },
+      { icon: <ImageIcon size={15} />, title: '上传图片', action: setImage },
+      {
+        icon: <LockKeyhole size={15} />,
+        title: '登录可见',
+        hint: '独立输入区；Ctrl+Enter 退出',
+        active: editor.isActive('membersOnly'),
+        className: 'article-tool-btn--members',
+        action: wrapMembersOnly,
+      },
+    ];
+  }, [editor, openLinkDialog, setImage, wrapMembersOnly]);
+
+  const buildMarkdownTools = useCallback((): ToolBtn[] => [
+    { icon: <strong>H</strong>, title: '标题', hint: 'H2 → H6 循环', action: withMarkdown(cycleMarkdownHeading) },
+    { icon: <Bold size={15} />, title: '加粗', action: withMarkdown((ta, v, ch) => wrapMarkdownSelection(ta, v, '**', '**', '加粗文字', ch)) },
+    { icon: <Italic size={15} />, title: '斜体', action: withMarkdown((ta, v, ch) => wrapMarkdownSelection(ta, v, '*', '*', '斜体文字', ch)) },
+    { icon: <UnderlineIcon size={15} />, title: '下划线', action: withMarkdown((ta, v, ch) => wrapMarkdownSelection(ta, v, '<u>', '</u>', '下划线文字', ch)) },
+    { icon: <Strikethrough size={15} />, title: '删除线', action: withMarkdown((ta, v, ch) => wrapMarkdownSelection(ta, v, '~~', '~~', '删除线文字', ch)) },
+    { icon: <Minus size={15} />, title: '分割线', action: withMarkdown((ta, v, ch) => insertAtCursor(ta, v, '\n\n---\n\n', ch)) },
+    { icon: <Quote size={15} />, title: '引用', action: withMarkdown((ta, v, ch) => prefixMarkdownLines(ta, v, '> ', ch)) },
+    { icon: <List size={15} />, title: '无序列表', action: withMarkdown((ta, v, ch) => prefixMarkdownLines(ta, v, '- ', ch)) },
+    { icon: <ListOrdered size={15} />, title: '有序列表', action: withMarkdown((ta, v, ch) => prefixMarkdownLines(ta, v, '1. ', ch)) },
+    { icon: <Code size={15} />, title: '代码块', action: withMarkdown((ta, v, ch) => wrapMarkdownSelection(ta, v, '```\n', '\n```', '代码', ch)) },
+    { icon: <LinkIcon size={15} />, title: '链接', action: () => openLinkDialog('markdown') },
+    { icon: <ImageIcon size={15} />, title: '上传图片', action: insertMarkdownImage },
+    {
+      icon: <LockKeyhole size={15} />,
+      title: '登录可见',
+      hint: '插入 <members-only> 区块',
+      className: 'article-tool-btn--members',
+      action: withMarkdown(insertMarkdownMembersOnly),
+    },
+  ], [withMarkdown, openLinkDialog, insertMarkdownImage]);
+
+  const tools = mode === 'rich' ? buildRichTools() : buildMarkdownTools();
+  const words = mode === 'markdown'
+    ? countWords(markdownSource)
+    : (editor ? countWords(editor.getText()) : 0);

  return (
-    <div className="article-editor">
+    <div className={`article-editor article-editor--${mode}${fullscreen ? ' article-editor--fullscreen' : ''}`}>
      <div className="article-editor-bar">
        <div className="article-editor-tools">
-          {tools.map((t, i) => (
-            <button
-              key={i}
-              type="button"
-              className={`article-tool-btn${i === tools.length - 1 ? ' article-tool-btn--members' : ''}`}
-              title={t.title}
-              onMouseDown={e => e.preventDefault()}
-              onClick={t.action}
-            >
-              {t.icon}
-            </button>
-          ))}
-        </div>
-        <div className="article-editor-modes">
-          <button
-            type="button"
-            className={`article-mode-btn${viewMode === 'edit' ? ' active' : ''}`}
-            onClick={() => setViewMode('edit')}
-            title="仅编辑"
-          >
-            <Pencil size={14} /> 编辑
-          </button>
-          <button
-            type="button"
-            className={`article-mode-btn${viewMode === 'split' ? ' active' : ''}`}
-            onClick={() => setViewMode('split')}
-            title="分栏预览"
-          >
-            分栏
-          </button>
-          <button
-            type="button"
-            className={`article-mode-btn${viewMode === 'preview' ? ' active' : ''}`}
-            onClick={() => setViewMode('preview')}
-            title="仅预览"
-          >
-            <Eye size={14} /> 预览
-          </button>
+          {renderToolButtons(tools)}
        </div>
      </div>

-      <div className={`article-editor-panes article-editor-panes--${viewMode}`}>
-        {showEdit && (
-          <div className="article-pane article-pane--edit">
-            <textarea
-              ref={textareaRef}
-              className="article-textarea"
-              value={value}
-              onChange={e => onChange(e.target.value)}
-              onSelect={saveSelection}
-              onKeyUp={saveSelection}
-              onClick={saveSelection}
-              onFocus={saveSelection}
-              placeholder={placeholder}
-              spellCheck={false}
-            />
+      <div className="article-editor-body">
+        {mode === 'rich' ? (
+          <div className="article-editor-pane article-editor-pane--rich">
+            <div className="article-editor-scroll">
+              <EditorContent editor={editor} className="article-editor-content" />
+            </div>
          </div>
-        )}
-        {showPreview && (
-          <div className="article-pane article-pane--preview">
-            {viewMode === 'split' && <div className="article-pane-label">实时预览</div>}
-            <div
-              className={`article-preview post-detail-content${!value.trim() ? ' article-preview--empty' : ''}`}
-              dangerouslySetInnerHTML={{ __html: displayPreviewHtml }}
-            />
+        ) : (
+          <div className="article-editor-markdown">
+            <div className="article-editor-pane article-editor-pane--source">
+              <div className="article-editor-scroll">
+                <textarea
+                  ref={markdownRef}
+                  className="article-editor-markdown-input"
+                  value={markdownSource}
+                  onChange={e => handleMarkdownChange(e.target.value)}
+                  onKeyDown={e => handleMarkdownTabKey(e, handleMarkdownChange)}
+                  placeholder="在此编写 Markdown 源码…"
+                  spellCheck={false}
+                />
+              </div>
+            </div>
+            <div className="article-editor-markdown-preview">
+              <div className="article-editor-markdown-preview-label">预览</div>
+              <div
+                className="article-editor-markdown-preview-body post-detail-content"
+                dangerouslySetInnerHTML={{ __html: markdownPreviewHtml }}
+              />
+            </div>
          </div>
        )}
      </div>

      <div className="article-editor-status">
-        <span>{words} 字</span>
-        <span>Markdown</span>
+        <div className="article-editor-status-meta">
+          <span>{words} 字</span>
+          <span className="article-editor-status-sep">·</span>
+          <span>
+            {mode === 'rich' ? '富文本' : 'Markdown 源码'}
+            {' · Tab 缩进 / Shift+Tab 回退'}
+            {mode === 'rich' ? ' · 登录可见内 Ctrl+Enter 退出' : ''}
+          </span>
+        </div>
+
+        <div className="article-editor-status-actions">
+          <Tooltip
+            content={mode === 'rich' ? 'Markdown 源码' : '富文本编辑'}
+            hint={mode === 'rich' ? '切换为 Markdown 源码编写' : '返回所见即所得编辑'}
+            align="end"
+            side="top"
+          >
+            <button
+              type="button"
+              className={`article-editor-view-btn${mode === 'markdown' ? ' active' : ''}`}
+              onMouseDown={e => e.preventDefault()}
+              onClick={mode === 'rich' ? switchToMarkdown : switchToRich}
+            >
+              {mode === 'rich' ? <FileCode size={15} /> : <PenLine size={15} />}
+              <span>{mode === 'rich' ? '源码' : '富文本'}</span>
+            </button>
+          </Tooltip>
+
+          <Tooltip
+            content={fullscreen ? '退出全屏' : '全屏编辑'}
+            hint={fullscreen ? 'Esc 也可退出' : '沉浸式编写长文'}
+            align="end"
+            side="top"
+          >
+            <button
+              type="button"
+              className="article-editor-view-btn"
+              onMouseDown={e => e.preventDefault()}
+              onClick={() => setFullscreen(v => !v)}
+            >
+              {fullscreen ? <Minimize2 size={15} /> : <Maximize2 size={15} />}
+              <span>{fullscreen ? '退出全屏' : '全屏'}</span>
+            </button>
+          </Tooltip>
+        </div>
      </div>
+
+      <ArticleLinkDialog
+        open={linkDialogOpen}
+        onOpenChange={setLinkDialogOpen}
+        initialUrl={linkDialogUrl}
+        onConfirm={applyLink}
+        onRemove={linkTarget === 'rich' && linkDialogUrl ? removeLink : undefined}
+      />
    </div>
  );
 });
--- a/frontend/src/components/AvatarCropDialog.tsx
+++ b/frontend/src/components/AvatarCropDialog.tsx
@@ -0,0 +1,116 @@
+import { useCallback, useEffect, useState } from 'react';
+import Cropper, { type Area } from 'react-easy-crop';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+import { Spinner } from '@/components/ui/spinner';
+import { notify } from '@/lib/notify';
+import { getCroppedAvatarFile } from '../utils/avatarCrop';
+
+interface Props {
+  open: boolean;
+  imageSrc: string | null;
+  fileName?: string;
+  onOpenChange: (open: boolean) => void;
+  onConfirm: (file: File) => void;
+}
+
+export default function AvatarCropDialog({
+  open,
+  imageSrc,
+  fileName,
+  onOpenChange,
+  onConfirm,
+}: Props) {
+  const [crop, setCrop] = useState({ x: 0, y: 0 });
+  const [zoom, setZoom] = useState(1);
+  const [croppedAreaPixels, setCroppedAreaPixels] = useState<Area | null>(null);
+  const [confirming, setConfirming] = useState(false);
+
+  useEffect(() => {
+    if (open) {
+      setCrop({ x: 0, y: 0 });
+      setZoom(1);
+      setCroppedAreaPixels(null);
+    }
+  }, [open, imageSrc]);
+
+  const onCropComplete = useCallback((_: Area, pixels: Area) => {
+    setCroppedAreaPixels(pixels);
+  }, []);
+
+  const handleConfirm = async () => {
+    if (!imageSrc || !croppedAreaPixels) return;
+    setConfirming(true);
+    try {
+      const file = await getCroppedAvatarFile(imageSrc, croppedAreaPixels, fileName);
+      onConfirm(file);
+      onOpenChange(false);
+    } catch {
+      notify.error('裁剪失败，请重试');
+    } finally {
+      setConfirming(false);
+    }
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="avatar-crop-dialog">
+        <DialogHeader>
+          <DialogTitle>裁剪头像</DialogTitle>
+          <DialogDescription>
+            拖动图片调整位置，滚轮或滑块缩放。GIF 裁剪后将变为静态 JPG。
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="avatar-crop-stage">
+          {imageSrc ? (
+            <Cropper
+              image={imageSrc}
+              crop={crop}
+              zoom={zoom}
+              aspect={1}
+              cropShape="round"
+              showGrid={false}
+              onCropChange={setCrop}
+              onZoomChange={setZoom}
+              onCropComplete={onCropComplete}
+            />
+          ) : (
+            <div className="avatar-crop-loading">
+              <Spinner size="lg" />
+            </div>
+          )}
+        </div>
+
+        <div className="avatar-crop-zoom">
+          <span className="avatar-crop-zoom-label">缩放</span>
+          <input
+            type="range"
+            min={1}
+            max={3}
+            step={0.01}
+            value={zoom}
+            onChange={e => setZoom(Number(e.target.value))}
+            aria-label="缩放"
+          />
+        </div>
+
+        <DialogFooter>
+          <Button variant="outline" disabled={confirming} onClick={() => onOpenChange(false)}>
+            取消
+          </Button>
+          <Button loading={confirming} disabled={!imageSrc} onClick={handleConfirm}>
+            确认裁剪
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
--- a/frontend/src/components/BoardAppearancePicker.tsx
+++ b/frontend/src/components/BoardAppearancePicker.tsx
@@ -0,0 +1,93 @@
+import { cn } from '@/lib/utils';
+import {
+  BOARD_ICON_OPTIONS,
+  BOARD_PALETTE_SIZE,
+  getBoardIcon,
+  getBoardThemeIndex,
+} from '../utils/boardTheme';
+import type { Board } from '../api/types';
+
+interface IconPickerProps {
+  value: string;
+  onChange: (key: string) => void;
+  board: Pick<Board, 'id' | 'color_index'>;
+}
+
+interface ColorPickerProps {
+  value: number;
+  onChange: (index: number) => void;
+  boardId: number;
+}
+
+/** 板块图标选择器 */
+export function BoardIconPicker({ value, onChange, board }: IconPickerProps) {
+  const previewBoard = { id: board.id, icon: value || undefined, color_index: board.color_index };
+  const PreviewIcon = getBoardIcon(previewBoard);
+  const themeIdx = getBoardThemeIndex(previewBoard);
+
+  return (
+    <div className="board-appearance-picker">
+      <div className="board-appearance-picker__preview">
+        <span className={cn('board-appearance-picker__preview-icon', `sidebar-board-icon--${themeIdx}`)}>
+          <PreviewIcon aria-hidden />
+        </span>
+        <span className="board-appearance-picker__preview-hint">预览</span>
+      </div>
+      <div className="board-icon-grid" role="listbox" aria-label="选择板块图标">
+        <button
+          type="button"
+          role="option"
+          aria-selected={!value}
+          className={cn('board-icon-option', !value && 'board-icon-option--active')}
+          title="自动（按板块 ID）"
+          onClick={() => onChange('')}
+        >
+          <span className="board-icon-option__auto">A</span>
+        </button>
+        {BOARD_ICON_OPTIONS.map(({ key, label, Icon }) => (
+          <button
+            key={key}
+            type="button"
+            role="option"
+            aria-selected={value === key}
+            aria-label={label}
+            title={label}
+            className={cn('board-icon-option', value === key && 'board-icon-option--active')}
+            onClick={() => onChange(key)}
+          >
+            <Icon aria-hidden />
+          </button>
+        ))}
+      </div>
+    </div>
+  );
+}
+
+/** 板块色标选择器（-1 为自动） */
+export function BoardColorPicker({ value, onChange, boardId }: ColorPickerProps) {
+  return (
+    <div className="board-color-grid" role="listbox" aria-label="选择板块色标">
+      <button
+        type="button"
+        role="option"
+        aria-selected={value < 0}
+        className={cn('board-color-option board-color-option--auto', value < 0 && 'board-color-option--active')}
+        title="自动（按板块 ID）"
+        onClick={() => onChange(-1)}
+      >
+        A
+      </button>
+      {Array.from({ length: BOARD_PALETTE_SIZE }, (_, i) => (
+        <button
+          key={i}
+          type="button"
+          role="option"
+          aria-selected={value === i}
+          className={cn('board-color-option', `board-color-option--${i}`, value === i && 'board-color-option--active')}
+          title={`色标 ${i + 1}`}
+          onClick={() => onChange(i)}
+        />
+      ))}
+    </div>
+  );
+}
--- a/frontend/src/components/BoardBadge.tsx
+++ b/frontend/src/components/BoardBadge.tsx
@@ -0,0 +1,18 @@
+import { cn } from '@/lib/utils';
+import { getBoardThemeIndex } from '../utils/boardTheme';
+import type { Board } from '../api/types';
+
+interface Props {
+  board: Pick<Board, 'id' | 'name' | 'color_index'>;
+  className?: string;
+}
+
+/** 按板块配置或 id 映射不同色标的 Badge */
+export default function BoardBadge({ board, className }: Props) {
+  const idx = getBoardThemeIndex(board);
+  return (
+    <span className={cn('board-badge', `board-badge--${idx}`, className)}>
+      {board.name}
+    </span>
+  );
+}
--- a/frontend/src/components/BoardGrid.tsx
+++ b/frontend/src/components/BoardGrid.tsx
@@ -1,70 +0,0 @@
-import { Button } from '@/components/ui/button';
-import { LayoutGrid, Folder, Plus } from 'lucide-react';
-import { useNavigate } from 'react-router-dom';
-import type { Board } from '../api/types';
-import { useAuth } from '../hooks/useAuth';
-
-interface Props {
-  boards: Board[];
-  loading?: boolean;
-  selectedId?: number;
-  onSelect: (id: number) => void;
-}
-
-export default function BoardGrid({ boards, loading = false, selectedId = 0, onSelect }: Props) {
-  const nav = useNavigate();
-  const { user } = useAuth();
-
-  if (loading) {
-    return (
-      <div className="board-grid board-grid--skeleton" aria-hidden>
-        {Array.from({ length: 4 }, (_, i) => (
-          <div key={i} className="board-tab board-tab--skeleton" />
-        ))}
-      </div>
-    );
-  }
-
-  if (boards.length === 0) {
-    return (
-      <div className="board-grid-empty">
-        <p className="text-sm text-muted-foreground py-4 text-center">
-          {user?.role === 'admin' ? '还没有板块，请先创建' : '管理员尚未创建板块'}
-        </p>
-        {user?.role === 'admin' && (
-          <div style={{ textAlign: 'center', marginTop: 12 }}>
-            <Button onClick={() => nav('/boards')}>
-              <Plus />
-              创建板块
-            </Button>
-          </div>
-        )}
-      </div>
-    );
-  }
-
-  return (
-    <div className="board-grid">
-      <button
-        type="button"
-        className={`board-tab ${selectedId === 0 ? 'active' : ''}`}
-        onClick={() => onSelect(0)}
-      >
-        <span className="board-tab-icon"><LayoutGrid size={16} /></span>
-        <span className="board-tab-name">全部帖子</span>
-      </button>
-      {boards.map(b => (
-        <button
-          key={b.id}
-          type="button"
-          className={`board-tab ${selectedId === b.id ? 'active' : ''}`}
-          title={b.description ? `${b.name} — ${b.description}` : b.name}
-          onClick={() => onSelect(b.id)}
-        >
-          <span className="board-tab-icon"><Folder size={16} /></span>
-          <span className="board-tab-name">{b.name}</span>
-        </button>
-      ))}
-    </div>
-  );
-}
--- a/frontend/src/components/BoardIconDisplay.tsx
+++ b/frontend/src/components/BoardIconDisplay.tsx
@@ -0,0 +1,14 @@
+import { getBoardIcon } from '../utils/boardTheme';
+import type { Board } from '../api/types';
+
+/** 渲染板块 Lucide 图标 */
+export default function BoardIconDisplay({
+  board,
+  className,
+}: {
+  board: Pick<Board, 'id' | 'icon' | 'color_index'>;
+  className?: string;
+}) {
+  const Icon = getBoardIcon(board);
+  return <Icon className={className} aria-hidden />;
+}
--- a/frontend/src/components/CommentContent.tsx
+++ b/frontend/src/components/CommentContent.tsx
@@ -8,12 +8,11 @@ interface Props {
 /** 渲染评论正文（支持正文内 @ 高亮） */
 export default function CommentContent({ content, onMentionClick }: Props) {
  return (
-    <div className="floor-body">
-      <span
-        dangerouslySetInnerHTML={{
-          __html: highlightMentions(content, onMentionClick),
-        }}
-      />
-    </div>
+    <div
+      className="floor-body"
+      dangerouslySetInnerHTML={{
+        __html: highlightMentions(content, onMentionClick),
+      }}
+    />
  );
 }
--- a/frontend/src/components/FeedHeader.tsx
+++ b/frontend/src/components/FeedHeader.tsx
@@ -1,8 +1,6 @@
-import { Button } from '@/components/ui/button';
-import { Plus, Settings } from 'lucide-react';
+import { Users, FileText, LayoutGrid } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
 import type { Board, ForumStats } from '../api/types';
-import { useAuth } from '../hooks/useAuth';

 interface Props {
  boardId: number;
@@ -14,55 +12,47 @@ interface Props {

 export default function FeedHeader({ boardId, keyword, boards, stats, postTotal }: Props) {
  const nav = useNavigate();
-  const { user, loading: authLoading } = useAuth();
  const board = boards.find(b => b.id === boardId);

  const title = keyword
    ? `搜索：${keyword}`
    : (boardId && board ? board.name : '全部帖子');

-  const hint = keyword
-    ? `找到 ${postTotal} 篇相关帖子`
-    : boardId && board
-      ? (board.description || '欢迎在本板块交流讨论')
-      : '姜十三论坛 · 拾三一隅，自在交流';
+  const boardHint = boardId && board ? (board.description || '') : '';

  return (
-    <div className="feed-banner">
-      <div className="feed-banner-row">
-        <div className="feed-banner-title">
-          <h2>{title}</h2>
-          <p>{hint}</p>
-        </div>
-        {!keyword && (
-          <div className="feed-actions flex flex-wrap items-center gap-2">
-            {authLoading ? (
-              <span className="feed-action-slot" aria-hidden />
-            ) : user ? (
-              <Button
-                size="sm"
-                onClick={() => nav(boardId ? `/compose?board=${boardId}` : '/compose')}
-              >
-                <Plus />
-                {boardId ? '在此发帖' : '发布帖子'}
-              </Button>
-            ) : (
-              <Button size="sm" onClick={() => nav('/login')}>登录参与</Button>
-            )}
-            {!authLoading && user?.role === 'admin' && (
-              <Button size="sm" variant="outline" onClick={() => nav('/boards')}>
-                <Settings />
-                管理板块
-              </Button>
-            )}
+    <div className={`feed-head${keyword ? ' feed-head--solo' : ''}`}>
+      <div className="feed-head__title">
+        <h2 title={boardHint || undefined}>{title}</h2>
+        {!keyword && stats && (
+          <div className="feed-head__stats">
+            <span className="feed-stat-chip">
+              <Users aria-hidden />
+              会员 <strong>{stats.users}</strong>
+            </span>
+            <span className="feed-stat-chip">
+              <FileText aria-hidden />
+              帖子 <strong>{stats.posts}</strong>
+            </span>
+            <span className="feed-stat-chip">
+              <LayoutGrid aria-hidden />
+              板块 <strong>{stats.boards}</strong>
+            </span>
          </div>
        )}
      </div>
-      <div className="feed-stats">
-        <span>会员 <strong>{stats?.users ?? '—'}</strong></span>
-        <span>帖子 <strong>{stats?.posts ?? '—'}</strong></span>
-        <span>板块 <strong>{stats?.boards ?? '—'}</strong></span>
-      </div>
+      {keyword && (
+        <button
+          type="button"
+          className="feed-head__clear"
+          onClick={() => nav('/')}
+        >
+          清除搜索
+        </button>
+      )}
+      {keyword && (
+        <span className="feed-toolbar__count">共 {postTotal} 条</span>
+      )}
    </div>
  );
 }
--- a/frontend/src/components/FeedSortBar.tsx
+++ b/frontend/src/components/FeedSortBar.tsx
@@ -0,0 +1,64 @@
+import { Clock, MessageCircle, Flame } from 'lucide-react';
+import { cn } from '@/lib/utils';
+
+export type FeedSort = 'latest' | 'reply' | 'hot';
+
+const SORT_OPTIONS: {
+  key: FeedSort;
+  label: string;
+  hint: string;
+  icon: typeof Clock;
+}[] = [
+  { key: 'latest', label: '最新发帖', hint: '按发布时间', icon: Clock },
+  { key: 'reply', label: '最新回复', hint: '最近有人回复', icon: MessageCircle },
+  { key: 'hot', label: '热门讨论', hint: '按互动热度', icon: Flame },
+];
+
+interface Props {
+  value: FeedSort;
+  onChange: (sort: FeedSort) => void;
+  postTotal?: number;
+}
+
+export function parseFeedSort(raw: string | null): FeedSort {
+  if (raw === 'reply' || raw === 'hot') return raw;
+  return 'latest';
+}
+
+export function buildHomeUrl(boardId: number, sort: FeedSort = 'latest') {
+  const p = new URLSearchParams();
+  if (boardId) p.set('board', String(boardId));
+  if (sort !== 'latest') p.set('sort', sort);
+  const qs = p.toString();
+  return qs ? `/?${qs}` : '/';
+}
+
+export function feedSortLabel(sort: FeedSort): string {
+  return SORT_OPTIONS.find(o => o.key === sort)?.label ?? '帖子列表';
+}
+
+export default function FeedSortBar({ value, onChange, postTotal }: Props) {
+  return (
+    <div className="feed-toolbar">
+      <div className="feed-sort-bar" role="tablist" aria-label="帖子排序">
+        {SORT_OPTIONS.map(({ key, label, hint, icon: Icon }) => (
+        <button
+          key={key}
+          type="button"
+          role="tab"
+          aria-selected={value === key}
+          title={`${label} · ${hint}`}
+          className={cn('feed-sort-tab', value === key && 'active')}
+          onClick={() => onChange(key)}
+        >
+          <Icon aria-hidden />
+          <span className="feed-sort-tab__label">{label}</span>
+        </button>
+      ))}
+      </div>
+      {postTotal != null && (
+        <span className="feed-toolbar__count">共 {postTotal} 条</span>
+      )}
+    </div>
+  );
+}
--- a/frontend/src/components/PinnedIcon.tsx
+++ b/frontend/src/components/PinnedIcon.tsx
@@ -0,0 +1,20 @@
+import { Pin } from 'lucide-react';
+import { cn } from '@/lib/utils';
+
+interface Props {
+  className?: string;
+  size?: number;
+}
+
+/** 置顶图钉标识 */
+export default function PinnedIcon({ className, size = 16 }: Props) {
+  return (
+    <Pin
+      className={cn('post-pinned-icon', className)}
+      size={size}
+      fill="currentColor"
+      aria-label="置顶"
+      role="img"
+    />
+  );
+}
--- a/frontend/src/components/PostListItem.tsx
+++ b/frontend/src/components/PostListItem.tsx
@@ -1,14 +1,25 @@
-import { Badge } from '@/components/ui/badge';
+import { MessageCircle, ThumbsUp } from 'lucide-react';
+import BoardBadge from '@/components/BoardBadge';
+import PinnedIcon from '@/components/PinnedIcon';
 import type { PostItem } from '../api/types';
+import type { FeedSort } from './FeedSortBar';
 import { formatTime } from '../utils/content';

 interface Props {
  post: PostItem;
+  sort?: FeedSort;
  onClick: () => void;
 }

-export default function PostListItem({ post, onClick }: Props) {
+export default function PostListItem({ post, sort = 'latest', onClick }: Props) {
  const initial = post.user?.nickname?.[0] || '?';
+  const timeLabel = sort === 'reply'
+    ? (post.last_reply_at
+      ? `${formatTime(post.last_reply_at)} 回复`
+      : '暂无回复')
+    : formatTime(post.created_at);
+  const commentCount = post.comment_count ?? 0;
+  const likeCount = post.like_count ?? 0;

  return (
    <div className="post-row" onClick={onClick}>
@@ -17,18 +28,24 @@ export default function PostListItem({ post, onClick }: Props) {
      </div>
      <div className="post-body">
        <div className="post-title">
-          {post.pinned && <Badge variant="orange" className="mr-1.5">置顶</Badge>}
+          {post.pinned && <PinnedIcon className="mr-1.5" />}
          {post.title}
        </div>
        <div className="post-meta">
-          {post.board && <Badge variant="green">{post.board.name}</Badge>}
+          {post.board && <BoardBadge board={post.board} />}
          <span>{post.user?.nickname || '匿名'}</span>
-          <span>{formatTime(post.created_at)}</span>
+          <span>{timeLabel}</span>
        </div>
      </div>
      <div className="post-stats">
-        <span>💬 {post.comment_count ?? 0}</span>
-        <span>👍 {post.like_count ?? 0}</span>
+        <span className={`post-stat${commentCount === 0 ? ' post-stat--zero' : ''}`}>
+          <MessageCircle aria-hidden />
+          {commentCount}
+        </span>
+        <span className={`post-stat${likeCount === 0 ? ' post-stat--zero' : ''}`}>
+          <ThumbsUp aria-hidden />
+          {likeCount}
+        </span>
      </div>
    </div>
  );
--- a/frontend/src/components/PostListSkeleton.tsx
+++ b/frontend/src/components/PostListSkeleton.tsx
@@ -0,0 +1,30 @@
+import { Skeleton } from '@/components/ui/skeleton';
+
+interface Props {
+  count?: number;
+}
+
+/** 帖子列表加载骨架屏 */
+export default function PostListSkeleton({ count = 8 }: Props) {
+  return (
+    <div className="post-list-skeleton" aria-busy="true" aria-label="加载中">
+      {Array.from({ length: count }, (_, i) => (
+        <div key={i} className="post-row post-row--skeleton">
+          <Skeleton className="skeleton--avatar" />
+          <div className="post-body">
+            <Skeleton className="skeleton--title" style={{ width: `${55 + (i % 4) * 10}%` }} />
+            <div className="skeleton-meta-row">
+              <Skeleton className="skeleton--badge" />
+              <Skeleton className="skeleton--meta" />
+              <Skeleton className="skeleton--meta skeleton--meta-short" />
+            </div>
+          </div>
+          <div className="post-stats">
+            <Skeleton className="skeleton--stat" />
+            <Skeleton className="skeleton--stat" />
+          </div>
+        </div>
+      ))}
+    </div>
+  );
+}
--- a/frontend/src/components/PostRevisionPanel.tsx
+++ b/frontend/src/components/PostRevisionPanel.tsx
@@ -0,0 +1,334 @@
+import { useEffect, useMemo, useState } from 'react';
+import {
+  History, X, Maximize2, Minimize2, GitCompare, FileText, ArrowRight,
+} from 'lucide-react';
+import { Spinner } from '@/components/ui/spinner';
+import { notify } from '@/lib/notify';
+import { api } from '../api/client';
+import type { PostRevision } from '../api/types';
+import PostContent from './PostContent';
+import { formatDateTime } from '../utils/content';
+import {
+  type PostSnapshot,
+  htmlToDiffText,
+  summarizeChange,
+  diffTextLines,
+  diffTextWords,
+  countLineChanges,
+} from '../utils/revisionDiff';
+
+interface Props {
+  postId: number;
+  currentPost: PostSnapshot;
+  open: boolean;
+  onClose: () => void;
+  isLoggedIn: boolean;
+}
+
+type ViewMode = 'diff' | 'before' | 'after';
+
+interface RevisionEntry {
+  rev: PostRevision;
+  after: PostSnapshot;
+  summary: ReturnType<typeof summarizeChange>;
+  index: number;
+}
+
+function DiffWords({ before, after }: { before: string; after: string }) {
+  const parts = diffTextWords(before, after);
+  if (before === after) {
+    return <span className="revision-diff-unchanged">{before || '（空）'}</span>;
+  }
+  return (
+    <span className="revision-diff-inline">
+      {parts.map((part, i) => {
+        if (part.added) return <ins key={i}>{part.value}</ins>;
+        if (part.removed) return <del key={i}>{part.value}</del>;
+        return <span key={i}>{part.value}</span>;
+      })}
+    </span>
+  );
+}
+
+function DiffLines({ before, after }: { before: string; after: string }) {
+  const parts = diffTextLines(before, after);
+  const { added, removed } = countLineChanges(parts);
+
+  if (before === after) {
+    return <p className="revision-diff-unchanged">正文无变化</p>;
+  }
+
+  return (
+    <div className="revision-diff-lines">
+      <div className="revision-diff-stats">
+        {removed > 0 && <span className="revision-diff-stat revision-diff-stat--del">删除 {removed} 行</span>}
+        {added > 0 && <span className="revision-diff-stat revision-diff-stat--add">新增 {added} 行</span>}
+      </div>
+      <pre className="revision-diff-pre">
+        {parts.map((part, i) => {
+          const lines = part.value.split('\n');
+          return lines.map((line, j) => {
+            if (j === lines.length - 1 && line === '') return null;
+            const cls = part.added
+              ? 'revision-diff-line revision-diff-line--add'
+              : part.removed
+                ? 'revision-diff-line revision-diff-line--del'
+                : 'revision-diff-line revision-diff-line--same';
+            const prefix = part.added ? '+' : part.removed ? '−' : ' ';
+            return (
+              <div key={`${i}-${j}`} className={cls}>
+                <span className="revision-diff-gutter" aria-hidden="true">{prefix}</span>
+                <span className="revision-diff-text">{line || ' '}</span>
+              </div>
+            );
+          });
+        })}
+      </pre>
+    </div>
+  );
+}
+
+function ChangeBadges({ summary }: { summary: ReturnType<typeof summarizeChange> }) {
+  if (!summary.hasChanges) return <span className="revision-badge revision-badge--none">无变更</span>;
+  return (
+    <>
+      {summary.titleChanged && <span className="revision-badge">标题</span>}
+      {summary.contentChanged && <span className="revision-badge">正文</span>}
+      {summary.tagsChanged && <span className="revision-badge">标签</span>}
+    </>
+  );
+}
+
+export default function PostRevisionPanel({ postId, currentPost, open, onClose, isLoggedIn }: Props) {
+  const [revisions, setRevisions] = useState<PostRevision[]>([]);
+  const [selectedId, setSelectedId] = useState<number | null>(null);
+  const [loading, setLoading] = useState(false);
+  const [viewMode, setViewMode] = useState<ViewMode>('diff');
+  const [fullscreen, setFullscreen] = useState(false);
+
+  useEffect(() => {
+    if (!open) {
+      setSelectedId(null);
+      setViewMode('diff');
+      setFullscreen(false);
+      return;
+    }
+    setLoading(true);
+    api.postRevisions(postId)
+      .then(d => {
+        const list = d.revisions ?? [];
+        setRevisions(list);
+        if (list.length > 0) setSelectedId(list[0].id);
+      })
+      .catch(e => notify.error(e instanceof Error ? e.message : '加载历史失败'))
+      .finally(() => setLoading(false));
+  }, [open, postId]);
+
+  // 阻止背景滚动
+  useEffect(() => {
+    if (!open) return;
+    const prev = document.body.style.overflow;
+    document.body.style.overflow = 'hidden';
+    return () => { document.body.style.overflow = prev; };
+  }, [open]);
+
+  const entries: RevisionEntry[] = useMemo(() => {
+    return revisions.map((rev, index) => {
+      const after: PostSnapshot = index === 0
+        ? currentPost
+        : {
+            title: revisions[index - 1].title,
+            content: revisions[index - 1].content,
+            tags: revisions[index - 1].tags,
+          };
+      const before: PostSnapshot = {
+        title: rev.title,
+        content: rev.content,
+        tags: rev.tags,
+      };
+      return {
+        rev,
+        after,
+        summary: summarizeChange(before, after),
+        index: revisions.length - index,
+      };
+    });
+  }, [revisions, currentPost]);
+
+  const selected = entries.find(e => e.rev.id === selectedId) ?? null;
+
+  if (!open) return null;
+
+  const beforeSnap: PostSnapshot | null = selected
+    ? { title: selected.rev.title, content: selected.rev.content, tags: selected.rev.tags }
+    : null;
+
+  return (
+    <div
+      className={`post-revision-overlay${fullscreen ? ' post-revision-overlay--fullscreen' : ''}`}
+      onClick={onClose}
+    >
+      <div
+        className={`post-revision-panel${fullscreen ? ' post-revision-panel--fullscreen' : ''}`}
+        onClick={e => e.stopPropagation()}
+        role="dialog"
+        aria-modal="true"
+        aria-label="编辑历史"
+      >
+        <header className="post-revision-head">
+          <div className="post-revision-head-left">
+            <History size={18} />
+            <h3>编辑历史</h3>
+            {selected && (
+              <span className="post-revision-head-sub">
+                第 {selected.index} 次编辑
+              </span>
+            )}
+          </div>
+          <div className="post-revision-head-actions">
+            <div className="post-revision-view-tabs" role="tablist">
+              {([
+                ['diff', GitCompare, '变更对比'],
+                ['before', FileText, '编辑前'],
+                ['after', ArrowRight, '编辑后'],
+              ] as const).map(([mode, Icon, label]) => (
+                <button
+                  key={mode}
+                  type="button"
+                  role="tab"
+                  aria-selected={viewMode === mode}
+                  className={`post-revision-tab${viewMode === mode ? ' active' : ''}`}
+                  onClick={() => setViewMode(mode)}
+                >
+                  <Icon size={14} />
+                  <span className="post-revision-tab-label">{label}</span>
+                </button>
+              ))}
+            </div>
+            <button
+              type="button"
+              className="post-revision-icon-btn"
+              onClick={() => setFullscreen(f => !f)}
+              title={fullscreen ? '退出全屏' : '全屏显示'}
+              aria-label={fullscreen ? '退出全屏' : '全屏显示'}
+            >
+              {fullscreen ? <Minimize2 size={18} /> : <Maximize2 size={18} />}
+            </button>
+            <button type="button" className="post-revision-icon-btn" onClick={onClose} aria-label="关闭">
+              <X size={18} />
+            </button>
+          </div>
+        </header>
+
+        {loading ? (
+          <div className="post-revision-loading"><Spinner size="lg" /></div>
+        ) : entries.length === 0 ? (
+          <p className="post-revision-empty">暂无编辑记录</p>
+        ) : (
+          <div className="post-revision-body">
+            <aside className="post-revision-sidebar">
+              <div className="post-revision-sidebar-label">时间线</div>
+              <ul className="post-revision-list">
+                {entries.map(entry => (
+                  <li key={entry.rev.id}>
+                    <button
+                      type="button"
+                      className={`post-revision-item${selectedId === entry.rev.id ? ' active' : ''}`}
+                      onClick={() => setSelectedId(entry.rev.id)}
+                    >
+                      <div className="post-revision-item-head">
+                        <span className="post-revision-item-num">#{entry.index}</span>
+                        <ChangeBadges summary={entry.summary} />
+                      </div>
+                      <span className="post-revision-item-title">{entry.rev.title}</span>
+                      <span className="post-revision-item-meta">
+                        {entry.rev.editor?.nickname ?? '未知'} · {formatDateTime(entry.rev.created_at)}
+                      </span>
+                    </button>
+                  </li>
+                ))}
+              </ul>
+              <div className="post-revision-current">
+                <span className="post-revision-current-label">当前版本</span>
+                <span className="post-revision-current-title">{currentPost.title}</span>
+              </div>
+            </aside>
+
+            <main className="post-revision-main">
+              {selected && beforeSnap ? (
+                <>
+                  <div className="post-revision-main-head">
+                    <div>
+                      <span className="post-revision-main-editor">
+                        {selected.rev.editor?.nickname ?? '未知'}
+                      </span>
+                      <span className="post-revision-main-time">
+                        {formatDateTime(selected.rev.created_at)}
+                      </span>
+                    </div>
+                    <ChangeBadges summary={selected.summary} />
+                  </div>
+
+                  <div className="post-revision-scroll">
+                    {viewMode === 'diff' && (
+                      <div className="revision-diff-view">
+                        <section className="revision-diff-section">
+                          <h4>标题</h4>
+                          <div className="revision-diff-block">
+                            <DiffWords before={beforeSnap.title} after={selected.after.title} />
+                          </div>
+                        </section>
+
+                        {(beforeSnap.tags || selected.after.tags) && (
+                          <section className="revision-diff-section">
+                            <h4>标签</h4>
+                            <div className="revision-diff-block">
+                              <DiffWords
+                                before={beforeSnap.tags || '（无）'}
+                                after={selected.after.tags || '（无）'}
+                              />
+                            </div>
+                          </section>
+                        )}
+
+                        <section className="revision-diff-section revision-diff-section--content">
+                          <h4>正文</h4>
+                          <DiffLines
+                            before={htmlToDiffText(beforeSnap.content)}
+                            after={htmlToDiffText(selected.after.content)}
+                          />
+                        </section>
+                      </div>
+                    )}
+
+                    {viewMode === 'before' && (
+                      <div className="revision-full-view">
+                        <h4>{beforeSnap.title}</h4>
+                        {beforeSnap.tags && (
+                          <p className="revision-full-tags">标签：{beforeSnap.tags}</p>
+                        )}
+                        <PostContent html={beforeSnap.content} isLoggedIn={isLoggedIn} />
+                      </div>
+                    )}
+
+                    {viewMode === 'after' && (
+                      <div className="revision-full-view">
+                        <h4>{selected.after.title}</h4>
+                        {selected.after.tags && (
+                          <p className="revision-full-tags">标签：{selected.after.tags}</p>
+                        )}
+                        <PostContent html={selected.after.content} isLoggedIn={isLoggedIn} />
+                      </div>
+                    )}
+                  </div>
+                </>
+              ) : (
+                <div className="post-revision-empty">请从左侧选择一次编辑记录</div>
+              )}
+            </main>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
--- a/frontend/src/components/RightPanel.tsx
+++ b/frontend/src/components/RightPanel.tsx
@@ -1,3 +1,4 @@
+import { Flame, Megaphone, Users } from 'lucide-react';
 import type { PostItem, Notification, OnlineStats } from '../api/types';

 interface Props {
@@ -7,58 +8,73 @@ interface Props {
  onPostClick: (id: number) => void;
 }

+function hotRankClass(index: number): string {
+  if (index === 0) return 'widget-rank widget-rank--1';
+  if (index === 1) return 'widget-rank widget-rank--2';
+  if (index === 2) return 'widget-rank widget-rank--3';
+  return 'widget-rank';
+}
+
 export default function RightPanel({ hot, notifications, online, onPostClick }: Props) {
  const hotList = hot?.slice(0, 8) ?? [];
  const noticeList = notifications?.slice(0, 6) ?? [];
  const members = online?.users ?? [];

  return (
-    <>
+    <div className="aside-panel-inner">
      <div className="widget-card">
-        <div className="widget-card-head">🔥 热门帖子</div>
+        <div className="widget-card-head">
+          <Flame className="widget-card-icon widget-card-icon--hot" aria-hidden />
+          热门帖子
+        </div>
        <div className="widget-card-body">
          {hotList.length === 0 ? (
-            <div style={{ fontSize: 13, color: 'var(--color-text-3)', padding: '8px 0' }}>暂无数据</div>
+            <div className="widget-empty">暂无数据</div>
          ) : hotList.map((item, i) => (
            <div key={item.id} className="widget-item" onClick={() => onPostClick(item.id)}>
-              <span style={{ color: i < 3 ? '#e74c3c' : 'var(--color-text-3)', fontWeight: 600, minWidth: 18 }}>{i + 1}</span>
-              <span style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{item.title}</span>
+              <span className={hotRankClass(i)}>{i + 1}</span>
+              <span className="widget-item-title">{item.title}</span>
            </div>
          ))}
        </div>
      </div>

      <div className="widget-card">
-        <div className="widget-card-head">📢 最新动态</div>
+        <div className="widget-card-head">
+          <Megaphone className="widget-card-icon widget-card-icon--notice" aria-hidden />
+          最新动态
+        </div>
        <div className="widget-card-body">
          {noticeList.length === 0 ? (
-            <div style={{ fontSize: 13, color: 'var(--color-text-3)', padding: '8px 0' }}>暂无动态</div>
+            <div className="widget-empty">暂无动态</div>
          ) : noticeList.map(item => (
-            <div key={item.id} className="widget-item" onClick={() => onPostClick(item.id)}>
-              <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{item.title}</span>
-              <span style={{ fontSize: 11, color: 'var(--color-text-4)', flexShrink: 0 }}>{item.created_at}</span>
+            <div key={item.id} className="widget-item widget-item--notice" onClick={() => onPostClick(item.id)}>
+              <span className="widget-item-title">{item.title}</span>
+              <span className="widget-item-time">{item.created_at}</span>
            </div>
          ))}
        </div>
      </div>

      <div className="widget-card">
-        <div className="widget-card-head">👀 当前浏览 {online?.count ?? '—'} 人</div>
+        <div className="widget-card-head">
+          <Users className="widget-card-icon widget-card-icon--online" aria-hidden />
+          当前浏览 <span className="widget-head-count">{online?.count ?? '—'}</span> 人
+        </div>
        <div className="widget-card-body">
-          <div style={{ fontSize: 12, color: 'var(--color-text-3)', marginBottom: 8 }}>
+          <div className="widget-online-meta">
            会员 {online?.members ?? 0} · 游客 {online?.guests ?? 0}
          </div>
-          <div style={{ display: 'flex', flexWrap: 'wrap', gap: 6 }}>
+          <div className="widget-online-list">
            {members.map(u => (
-              <span key={u.id} title={u.nickname} style={{
-                width: 28, height: 28, borderRadius: '50%', background: 'var(--j13-green)',
-                color: '#fff', fontSize: 12, display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
-              }}>
-                {u.nickname?.[0] || '?'}
+              <span key={u.id} className="widget-online-avatar" title={u.nickname}>
+                {u.avatar
+                  ? <img src={u.avatar} alt="" />
+                  : (u.nickname?.[0] || '?')}
              </span>
            ))}
            {members.length === 0 && (
-              <span style={{ fontSize: 13, color: 'var(--color-text-3)' }}>暂无会员在线</span>
+              <span className="widget-empty widget-empty--inline">暂无会员在线</span>
            )}
          </div>
        </div>
@@ -72,6 +88,6 @@ export default function RightPanel({ hot, notifications, online, onPostClick }:
          </p>
        </div>
      </div>
-    </>
+    </div>
  );
 }
--- a/frontend/src/components/Sidebar.tsx
+++ b/frontend/src/components/Sidebar.tsx
@@ -1,11 +1,14 @@
 import {
-  Home, Settings, Star, LayoutDashboard,
+  Home, Star, LayoutDashboard,
 } from 'lucide-react';
-import { useNavigate, useLocation } from 'react-router-dom';
+import { useNavigate, useLocation, useSearchParams } from 'react-router-dom';
 import type { Board } from '../api/types';
 import { useAuth } from '../hooks/useAuth';
-import { openAdminDashboard } from '../utils/admin';
 import { cn } from '@/lib/utils';
+import { buildHomeUrl, parseFeedSort } from './FeedSortBar';
+import { navigateFeed } from '../utils/feedCache';
+import BoardIconDisplay from './BoardIconDisplay';
+import { getBoardThemeIndex } from '../utils/boardTheme';

 // 内容页不参与左侧栏高亮（非 feed 浏览上下文）
 const NEUTRAL_SIDEBAR_PREFIXES = ['/post/', '/profile'];
@@ -17,7 +20,7 @@ export function isNeutralSidebarRoute(pathname: string): boolean {
 function resolveMenuKey(pathname: string, activeBoard: number): string | null {
  if (isNeutralSidebarRoute(pathname)) return null;
  if (pathname.startsWith('/favorites')) return 'favorites';
-  if (pathname.startsWith('/boards')) return 'boards';
+  if (pathname.startsWith('/admin')) return 'admin';
  return activeBoard === 0 ? 'all' : String(activeBoard);
 }

@@ -30,6 +33,8 @@ interface Props {
 export default function Sidebar({ boards, activeBoard, onSelectBoard }: Props) {
  const nav = useNavigate();
  const loc = useLocation();
+  const [params] = useSearchParams();
+  const sort = parseFeedSort(params.get('sort'));
  const { user } = useAuth();
  const isAdmin = user?.role === 'admin';

@@ -51,24 +56,40 @@ export default function Sidebar({ boards, activeBoard, onSelectBoard }: Props) {
    <aside className="sidebar">
      <div className="sidebar-section">浏览</div>
      <nav className="sidebar-nav">
-        {navItem('all', '全部帖子', <Home />, () => { onSelectBoard(0); nav('/'); })}
+        {navItem('all', '全部帖子', <Home />, () => { onSelectBoard(0); navigateFeed(nav, buildHomeUrl(0, sort)); })}
        {user && navItem('favorites', '我的收藏', <Star />, () => nav('/favorites'))}
      </nav>

      {boards.length > 0 && (
        <>
-          <div className="sidebar-section" style={{ marginTop: 8 }}>板块</div>
+          <div className="sidebar-section sidebar-section--boards">板块</div>
          <nav className="sidebar-nav">
-            {boards.map(b => (
-              <button
-                type="button"
-                key={b.id}
-                className={cn('sidebar-nav-item', menuKey != null && menuKey === String(b.id) && 'active')}
-                onClick={() => { onSelectBoard(b.id); nav(`/?board=${b.id}`); }}
-              >
-                <span className="flex-1 truncate">{b.name}</span>
-              </button>
-            ))}
+            {boards.map(b => {
+              const isActive = menuKey != null && menuKey === String(b.id);
+              const themeIdx = getBoardThemeIndex(b);
+              return (
+                <button
+                  type="button"
+                  key={b.id}
+                  className={cn(
+                    'sidebar-nav-item',
+                    'sidebar-nav-item--board',
+                    isActive && 'active',
+                    isActive && `sidebar-nav-item--board-${themeIdx}`,
+                  )}
+                  onClick={() => { onSelectBoard(b.id); navigateFeed(nav, buildHomeUrl(b.id, sort)); }}
+                >
+                  <BoardIconDisplay
+                    board={b}
+                    className={cn('sidebar-board-icon', `sidebar-board-icon--${themeIdx}`)}
+                  />
+                  <span className="flex-1 truncate">{b.name}</span>
+                  {(b.post_count ?? 0) > 0 && (
+                    <span className="sidebar-nav-item__meta">{b.post_count}</span>
+                  )}
+                </button>
+              );
+            })}
          </nav>
        </>
      )}
@@ -77,8 +98,7 @@ export default function Sidebar({ boards, activeBoard, onSelectBoard }: Props) {
        <>
          <div className="sidebar-section" style={{ marginTop: 8 }}>管理</div>
          <nav className="sidebar-nav">
-            {navItem('boards', '管理板块', <Settings />, () => nav('/boards'))}
-            {navItem('admin', '系统后台', <LayoutDashboard />, openAdminDashboard)}
+            {navItem('admin', '管理后台', <LayoutDashboard />, () => nav('/admin/dashboard'))}
          </nav>
        </>
      )}
--- a/frontend/src/components/UnsavedChangesDialog.tsx
+++ b/frontend/src/components/UnsavedChangesDialog.tsx
@@ -0,0 +1,45 @@
+import { Button } from '@/components/ui/button';
+import {
+  AlertDialog,
+  AlertDialogCancel,
+  AlertDialogContent,
+  AlertDialogDescription,
+  AlertDialogFooter,
+  AlertDialogHeader,
+  AlertDialogTitle,
+} from '@/components/ui/alert-dialog';
+
+interface Props {
+  open: boolean;
+  onStay: () => void;
+  onLeave: () => void;
+  /** 编辑已有帖子时为 true */
+  isEdit?: boolean;
+}
+
+export default function UnsavedChangesDialog({ open, onStay, onLeave, isEdit = false }: Props) {
+  return (
+    <AlertDialog open={open}>
+      <AlertDialogContent onEscapeKeyDown={onStay}>
+        <AlertDialogHeader>
+          <AlertDialogTitle>放弃未保存的修改？</AlertDialogTitle>
+          <AlertDialogDescription>
+            {isEdit
+              ? '你对这篇文章的修改尚未保存，离开后将无法恢复。'
+              : '你正在撰写的内容尚未发布，离开后将无法恢复。'}
+          </AlertDialogDescription>
+        </AlertDialogHeader>
+        <AlertDialogFooter>
+          <AlertDialogCancel onClick={onStay}>继续编辑</AlertDialogCancel>
+          <Button
+            type="button"
+            variant="destructive"
+            onClick={onLeave}
+          >
+            放弃并离开
+          </Button>
+        </AlertDialogFooter>
+      </AlertDialogContent>
+    </AlertDialog>
+  );
+}
--- a/frontend/src/components/VirtualPostList.tsx
+++ b/frontend/src/components/VirtualPostList.tsx
@@ -1,19 +1,45 @@
-import { useRef, useEffect } from 'react';
+import { useRef, useEffect, useLayoutEffect } from 'react';
 import { useVirtualizer } from '@tanstack/react-virtual';
-import { Spinner } from '@/components/ui/spinner';
+import { Button } from '@/components/ui/button';
 import PostListItem from './PostListItem';
+import PostListSkeleton from './PostListSkeleton';
 import type { PostItem } from '../api/types';
+import type { FeedSort } from './FeedSortBar';

 interface Props {
  posts: PostItem[];
+  sort?: FeedSort;
  loading: boolean;
  hasMore: boolean;
+  /** 是否允许滚动触底自动加载（达到上限后为 false） */
+  canAutoLoad: boolean;
+  postTotal: number;
  onLoadMore: () => void;
  onSelect: (id: number) => void;
+  /** 返回列表时恢复的滚动位置 */
+  restoreScrollTop?: number | null;
+  /** 递增时强制回到列表顶部（主动刷新导航） */
+  resetScrollKey?: number;
+  onScrollTopChange?: (top: number) => void;
+  onScrollRestored?: () => void;
 }

-export default function VirtualPostList({ posts, loading, hasMore, onLoadMore, onSelect }: Props) {
+export default function VirtualPostList({
+  posts,
+  sort = 'latest',
+  loading,
+  hasMore,
+  canAutoLoad,
+  postTotal,
+  onLoadMore,
+  onSelect,
+  restoreScrollTop,
+  resetScrollKey = 0,
+  onScrollTopChange,
+  onScrollRestored,
+}: Props) {
  const parentRef = useRef<HTMLDivElement>(null);
+  const restoredRef = useRef(false);

  const virtualizer = useVirtualizer({
    count: posts.length,
@@ -22,46 +48,86 @@ export default function VirtualPostList({ posts, loading, hasMore, onLoadMore, o
    overscan: 8,
  });

+  const showHistoryPrompt = hasMore && !canAutoLoad && !loading;
+  const showEnd = !hasMore && posts.length > 0 && !loading;
+  const isInitialLoad = loading && posts.length === 0;
+  const isLoadingMore = loading && posts.length > 0;
+
+  useLayoutEffect(() => {
+    if (resetScrollKey <= 0) return;
+    const el = parentRef.current;
+    if (el) {
+      el.scrollTop = 0;
+      virtualizer.scrollToOffset(0);
+    }
+    restoredRef.current = true;
+    onScrollTopChange?.(0);
+  }, [resetScrollKey, virtualizer, onScrollTopChange]);
+
+  useLayoutEffect(() => {
+    if (restoreScrollTop == null || restoredRef.current || posts.length === 0) return;
+    virtualizer.scrollToOffset(restoreScrollTop);
+    restoredRef.current = true;
+    onScrollRestored?.();
+  }, [restoreScrollTop, posts.length, virtualizer, onScrollRestored]);
+
+  useEffect(() => {
+    restoredRef.current = false;
+  }, [restoreScrollTop]);
+
  useEffect(() => {
    const el = parentRef.current;
    if (!el) return;
    const onScroll = () => {
-      if (el.scrollTop + el.clientHeight >= el.scrollHeight - 120 && hasMore && !loading) {
+      onScrollTopChange?.(el.scrollTop);
+      if (el.scrollTop + el.clientHeight >= el.scrollHeight - 120 && canAutoLoad && hasMore && !loading) {
        onLoadMore();
      }
    };
    el.addEventListener('scroll', onScroll);
    return () => el.removeEventListener('scroll', onScroll);
-  }, [hasMore, loading, onLoadMore]);
+  }, [canAutoLoad, hasMore, loading, onLoadMore, onScrollTopChange]);

  return (
    <div className="post-list-scroll" ref={parentRef}>
-      <div className="content-surface" style={{ height: virtualizer.getTotalSize(), position: 'relative' }}>
-        {virtualizer.getVirtualItems().map(vi => {
-          const post = posts[vi.index];
-          return (
-            <div
-              key={post.id}
-              style={{
-                position: 'absolute',
-                top: 0,
-                left: 0,
-                width: '100%',
-                transform: `translateY(${vi.start}px)`,
-              }}
-            >
-              <PostListItem post={post} onClick={() => onSelect(post.id)} />
+      {isInitialLoad ? (
+        <PostListSkeleton />
+      ) : (
+        <>
+          <div className="content-surface" style={{ height: virtualizer.getTotalSize(), position: 'relative' }}>
+            {virtualizer.getVirtualItems().map(vi => {
+              const post = posts[vi.index];
+              return (
+                <div
+                  key={post.id}
+                  style={{
+                    position: 'absolute',
+                    top: 0,
+                    left: 0,
+                    width: '100%',
+                    transform: `translateY(${vi.start}px)`,
+                  }}
+                >
+                  <PostListItem post={post} sort={sort} onClick={() => onSelect(post.id)} />
+                </div>
+              );
+            })}
+          </div>
+          {isLoadingMore && <PostListSkeleton count={2} />}
+          {showHistoryPrompt && (
+            <div className="feed-list-footer feed-list-footer--history">
+              <p className="feed-list-footer__hint">
+                已显示 {posts.length} / {postTotal} 条
+              </p>
+              <Button type="button" variant="outline" size="sm" onClick={onLoadMore}>
+                加载更多历史
+              </Button>
            </div>
-          );
-        })}
-      </div>
-      {loading && (
-        <div className="flex justify-center py-4">
-          <Spinner />
-        </div>
-      )}
-      {!loading && !hasMore && posts.length > 0 && (
-        <div style={{ textAlign: 'center', padding: 6, fontSize: 12, color: 'var(--color-text-3)' }}>— 已加载全部 —</div>
+          )}
+          {showEnd && (
+            <div className="feed-list-footer feed-list-footer--end">— 已加载全部 —</div>
+          )}
+        </>
      )}
    </div>
  );
--- a/frontend/src/components/editor/ArticleLinkDialog.tsx
+++ b/frontend/src/components/editor/ArticleLinkDialog.tsx
@@ -0,0 +1,76 @@
+import { useEffect, useState } from 'react';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { Input } from '@/components/ui/input';
+import { Button } from '@/components/ui/button';
+
+interface Props {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  initialUrl?: string;
+  onConfirm: (url: string) => void;
+  onRemove?: () => void;
+}
+
+/** 文章编辑器链接输入弹窗 */
+export function ArticleLinkDialog({
+  open,
+  onOpenChange,
+  initialUrl = '',
+  onConfirm,
+  onRemove,
+}: Props) {
+  const [url, setUrl] = useState(initialUrl);
+
+  useEffect(() => {
+    if (open) setUrl(initialUrl || 'https://');
+  }, [open, initialUrl]);
+
+  const handleConfirm = () => {
+    onConfirm(url.trim());
+    onOpenChange(false);
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="article-link-dialog">
+        <DialogHeader>
+          <DialogTitle>插入链接</DialogTitle>
+          <DialogDescription>输入完整 URL，留空并确认可移除已有链接。</DialogDescription>
+        </DialogHeader>
+        <Input
+          type="url"
+          value={url}
+          placeholder="https://"
+          onChange={e => setUrl(e.target.value)}
+          onKeyDown={e => {
+            if (e.key === 'Enter') {
+              e.preventDefault();
+              handleConfirm();
+            }
+          }}
+          autoFocus
+        />
+        <DialogFooter className="article-link-dialog__footer">
+          {onRemove && initialUrl ? (
+            <Button type="button" variant="outline" onClick={() => { onRemove(); onOpenChange(false); }}>
+              移除链接
+            </Button>
+          ) : null}
+          <Button type="button" variant="outline" onClick={() => onOpenChange(false)}>
+            取消
+          </Button>
+          <Button type="button" onClick={handleConfirm}>
+            确定
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
--- a/frontend/src/components/editor/MembersOnlyExtension.tsx
+++ b/frontend/src/components/editor/MembersOnlyExtension.tsx
@@ -0,0 +1,171 @@
+import { Node, mergeAttributes } from '@tiptap/core';
+import {
+  ReactNodeViewRenderer,
+  NodeViewWrapper,
+  NodeViewContent,
+  type NodeViewProps,
+} from '@tiptap/react';
+import { LockKeyhole, LogOut } from 'lucide-react';
+
+/** 查找光标所在的登录可见节点深度 */
+function findMembersOnlyDepth($pos: { depth: number; node: (d: number) => { type: { name: string } } }): number {
+  for (let d = $pos.depth; d > 0; d -= 1) {
+    if ($pos.node(d).type.name === 'membersOnly') return d;
+  }
+  return -1;
+}
+
+/** 编辑态「登录可见」区块视图 */
+function MembersOnlyView({ selected, editor }: NodeViewProps) {
+  const handleExit = () => {
+    editor.chain().focus().exitMembersOnly().run();
+  };
+
+  const handleUnwrap = () => {
+    editor.chain().focus().unwrapMembersOnly().run();
+  };
+
+  return (
+    <NodeViewWrapper
+      as="members-only"
+      className={`post-members-only post-members-only--visible editor-members-only${selected ? ' editor-members-only--selected' : ''}`}
+    >
+      <div className="post-members-only__badge" contentEditable={false}>
+        <span className="post-members-only__badge-icon" aria-hidden="true">
+          <LockKeyhole size={12} />
+        </span>
+        <span>登录可见</span>
+        <button
+          type="button"
+          className="post-members-only__exit-btn"
+          title="Ctrl+Enter 退出到公开区域"
+          onMouseDown={e => e.preventDefault()}
+          onClick={handleExit}
+        >
+          <LogOut size={11} />
+          退出
+        </button>
+        <span className="post-members-only__shortcut-hint">Ctrl+Enter 退出</span>
+        <button
+          type="button"
+          className="post-members-only__unwrap-btn"
+          title="取消登录可见包裹，保留正文"
+          onMouseDown={e => e.preventDefault()}
+          onClick={handleUnwrap}
+        >
+          取消包裹
+        </button>
+      </div>
+      <NodeViewContent className="post-members-only__body" />
+    </NodeViewWrapper>
+  );
+}
+
+declare module '@tiptap/core' {
+  interface Commands<ReturnType> {
+    membersOnly: {
+      insertMembersOnly: () => ReturnType;
+      wrapMembersOnly: () => ReturnType;
+      exitMembersOnly: () => ReturnType;
+      unwrapMembersOnly: () => ReturnType;
+    };
+  }
+}
+
+/** TipTap 自定义节点：登录可见内容区块 */
+export const MembersOnly = Node.create({
+  name: 'membersOnly',
+  group: 'block',
+  content: 'block+',
+  defining: true,
+  isolating: true,
+
+  parseHTML() {
+    return [{ tag: 'members-only' }];
+  },
+
+  renderHTML({ HTMLAttributes }) {
+    return ['members-only', mergeAttributes(HTMLAttributes), 0];
+  },
+
+  addNodeView() {
+    return ReactNodeViewRenderer(MembersOnlyView);
+  },
+
+  addKeyboardShortcuts() {
+    return {
+      // 在区块末尾空行按 Enter 时退出到公开区域
+      Enter: ({ editor }) => {
+        const { $from, empty } = editor.state.selection;
+        if (!empty) return false;
+
+        const depth = findMembersOnlyDepth($from);
+        if (depth < 0) return false;
+
+        const parent = $from.parent;
+        const atBlockEnd = $from.parentOffset === parent.content.size;
+        const isEmptyBlock = parent.textContent.trim().length === 0;
+        if (!atBlockEnd || !isEmptyBlock) return false;
+
+        return editor.commands.exitMembersOnly();
+      },
+      // Ctrl+Enter / Cmd+Enter 退出到公开区域
+      'Mod-Enter': ({ editor }) => {
+        if (!editor.isActive('membersOnly')) return false;
+        return editor.commands.exitMembersOnly();
+      },
+    };
+  },
+
+  addCommands() {
+    return {
+      insertMembersOnly: () => ({ chain }) => chain()
+        .insertContent({
+          type: this.name,
+          content: [{ type: 'paragraph' }],
+        })
+        .run(),
+
+      wrapMembersOnly: () => ({ tr, state, dispatch }) => {
+        const { from, to, empty } = state.selection;
+        if (empty) return false;
+
+        const slice = state.doc.slice(from, to);
+        if (!slice.content.size) return false;
+
+        const node = state.schema.nodes.membersOnly.create(null, slice.content);
+        if (dispatch) {
+          tr.replaceRangeWith(from, to, node);
+        }
+        return true;
+      },
+
+      exitMembersOnly: () => ({ state, chain }) => {
+        const { $from } = state.selection;
+        const depth = findMembersOnlyDepth($from);
+        if (depth < 0) return false;
+
+        const pos = $from.before(depth);
+        const node = $from.node(depth);
+        const end = pos + node.nodeSize;
+
+        return chain()
+          .insertContentAt(end, { type: 'paragraph' })
+          .setTextSelection(end + 1)
+          .run();
+      },
+
+      unwrapMembersOnly: () => ({ tr, state, dispatch }) => {
+        const { $from } = state.selection;
+        const depth = findMembersOnlyDepth($from);
+        if (depth < 0) return false;
+
+        const pos = $from.before(depth);
+        const node = $from.node(depth);
+        tr.replaceWith(pos, pos + node.nodeSize, node.content);
+        if (dispatch) dispatch(tr);
+        return true;
+      },
+    };
+  },
+});
--- a/frontend/src/components/editor/TabIndentExtension.tsx
+++ b/frontend/src/components/editor/TabIndentExtension.tsx
@@ -0,0 +1,189 @@
+import { Extension } from '@tiptap/core';
+import type { Editor } from '@tiptap/react';
+
+export const TAB_SPACES = '    ';
+
+/** 收集选区覆盖的文本块 */
+function collectSelectedTextblocks(editor: Editor): { pos: number }[] {
+  const { from, to } = editor.state.selection;
+  const blocks: { pos: number }[] = [];
+  editor.state.doc.nodesBetween(from, to, (node, pos) => {
+    if (node.isTextblock) {
+      blocks.push({ pos });
+      return false;
+    }
+    return undefined;
+  });
+  return blocks;
+}
+
+/** 代码块多行选区：每行首插入缩进 */
+function indentCodeBlockSelection(editor: Editor): boolean {
+  const { from, to, empty } = editor.state.selection;
+  if (empty) return false;
+
+  const text = editor.state.doc.textBetween(from, to, '\n', '\n');
+  const lineStarts = [from];
+  for (let i = 0; i < text.length; i += 1) {
+    if (text[i] === '\n') lineStarts.push(from + i + 1);
+  }
+
+  let tr = editor.state.tr;
+  let offset = 0;
+  lineStarts.forEach(pos => {
+    tr = tr.insertText(TAB_SPACES, pos + offset);
+    offset += TAB_SPACES.length;
+  });
+  editor.view.dispatch(tr);
+  return true;
+}
+
+/** 代码块多行选区：每行首移除最多 4 个空格 */
+function outdentCodeBlockSelection(editor: Editor): boolean {
+  const { from, to, empty } = editor.state.selection;
+  if (empty) return false;
+
+  const doc = editor.state.doc;
+  const text = doc.textBetween(from, to, '\n', '\n');
+  const lineStarts = [from];
+  for (let i = 0; i < text.length; i += 1) {
+    if (text[i] === '\n') lineStarts.push(from + i + 1);
+  }
+
+  let tr = editor.state.tr;
+  let offset = 0;
+  let changed = false;
+  lineStarts.forEach(pos => {
+    const adjPos = pos + offset;
+    const lineEnd = doc.textBetween(adjPos, to + offset).split('\n')[0] ?? '';
+    const match = lineEnd.match(/^ {1,4}/);
+    if (!match) return;
+    tr = tr.delete(adjPos, adjPos + match[0].length);
+    offset -= match[0].length;
+    changed = true;
+  });
+
+  if (!changed) return false;
+  editor.view.dispatch(tr);
+  return true;
+}
+
+/** 多行选区：在每个文本块行首插入缩进 */
+function indentSelection(editor: Editor): boolean {
+  const { empty } = editor.state.selection;
+  if (empty) return false;
+
+  if (editor.isActive('codeBlock')) {
+    return indentCodeBlockSelection(editor);
+  }
+
+  if (editor.isActive('listItem')) {
+    return editor.chain().focus().sinkListItem('listItem').run();
+  }
+
+  const blocks = collectSelectedTextblocks(editor);
+  if (blocks.length === 0) return false;
+
+  let tr = editor.state.tr;
+  let offset = 0;
+  blocks.forEach(({ pos }) => {
+    const insertPos = pos + 1 + offset;
+    tr = tr.insertText(TAB_SPACES, insertPos);
+    offset += TAB_SPACES.length;
+  });
+  editor.view.dispatch(tr);
+  return true;
+}
+
+/** 多行选区：移除每个文本块行首最多 4 个空格 */
+function outdentSelection(editor: Editor): boolean {
+  const { empty } = editor.state.selection;
+  if (empty) return false;
+
+  if (editor.isActive('codeBlock')) {
+    return outdentCodeBlockSelection(editor);
+  }
+
+  if (editor.isActive('listItem')) {
+    return editor.chain().focus().liftListItem('listItem').run();
+  }
+
+  const blocks = collectSelectedTextblocks(editor);
+  if (blocks.length === 0) return false;
+
+  let tr = editor.state.tr;
+  let offset = 0;
+  blocks.forEach(({ pos }) => {
+    const node = editor.state.doc.nodeAt(pos);
+    if (!node?.isTextblock) return;
+    const text = node.textContent;
+    const match = text.match(/^ {1,4}/);
+    if (!match) return;
+    const removeLen = match[0].length;
+    const from = pos + 1 + offset;
+    tr = tr.delete(from, from + removeLen);
+    offset -= removeLen;
+  });
+
+  if (tr.steps.length === 0) return false;
+  editor.view.dispatch(tr);
+  return true;
+}
+
+/** 在代码块或段落中移除光标前的 4 个空格缩进 */
+function outdentTextblock(editor: Editor): boolean {
+  const { state } = editor;
+  const { $from, empty } = state.selection;
+  if (!empty) return false;
+  if (!$from.parent.isTextblock) return false;
+
+  const lineStart = $from.start();
+  const beforeCursor = state.doc.textBetween(lineStart, $from.pos);
+
+  if (beforeCursor.endsWith(TAB_SPACES)) {
+    return editor.chain().focus().deleteRange({ from: $from.pos - TAB_SPACES.length, to: $from.pos }).run();
+  }
+
+  const leading = beforeCursor.match(/^ {1,4}/);
+  if (leading) {
+    return editor.chain().focus().deleteRange({ from: lineStart, to: lineStart + leading[0].length }).run();
+  }
+
+  return false;
+}
+
+/** Tab 缩进：列表缩进/反缩进，多行选区整体缩进，其余插入 4 个空格 */
+export const TabIndent = Extension.create({
+  name: 'tabIndent',
+
+  addKeyboardShortcuts() {
+    return {
+      Tab: ({ editor }) => {
+        if (!editor.state.selection.empty) {
+          return indentSelection(editor);
+        }
+
+        if (editor.isActive('codeBlock')) {
+          return editor.chain().focus().insertContent(TAB_SPACES).run();
+        }
+        if (editor.isActive('listItem')) {
+          return editor.chain().focus().sinkListItem('listItem').run();
+        }
+        return editor.chain().focus().insertContent(TAB_SPACES).run();
+      },
+      'Shift-Tab': ({ editor }) => {
+        if (!editor.state.selection.empty) {
+          return outdentSelection(editor);
+        }
+
+        if (editor.isActive('codeBlock')) {
+          return outdentTextblock(editor);
+        }
+        if (editor.isActive('listItem')) {
+          return editor.chain().focus().liftListItem('listItem').run();
+        }
+        return outdentTextblock(editor);
+      },
+    };
+  },
+});
--- a/frontend/src/components/ui/Tooltip.tsx
+++ b/frontend/src/components/ui/Tooltip.tsx
@@ -0,0 +1,49 @@
+import { cloneElement, isValidElement, type ReactElement } from 'react';
+import { cn } from '@/lib/utils';
+
+type TooltipSide = 'top' | 'bottom';
+type TooltipAlign = 'start' | 'center' | 'end';
+
+interface TooltipProps {
+  content: string;
+  hint?: string;
+  side?: TooltipSide;
+  align?: TooltipAlign;
+  children: ReactElement;
+  className?: string;
+}
+
+/** 即时显示的网页式气泡提示，替代原生 title */
+export function Tooltip({
+  content,
+  hint,
+  side = 'bottom',
+  align = 'center',
+  children,
+  className,
+}: TooltipProps) {
+  if (!isValidElement(children)) return children;
+
+  const ariaLabel = hint ? `${content}，${hint}` : content;
+  const child = cloneElement(children, {
+    'aria-label': ariaLabel,
+  } as Record<string, unknown>);
+
+  return (
+    <span className={cn('ui-tooltip', className)}>
+      {child}
+      <span
+        role="tooltip"
+        className={cn(
+          'ui-tooltip-bubble',
+          `ui-tooltip-bubble--${side}`,
+          `ui-tooltip-bubble--${align}`,
+          hint ? 'ui-tooltip-bubble--rich' : 'ui-tooltip-bubble--compact',
+        )}
+      >
+        <span className="ui-tooltip-bubble__title">{content}</span>
+        {hint ? <span className="ui-tooltip-bubble__hint">{hint}</span> : null}
+      </span>
+    </span>
+  );
+}
--- a/frontend/src/components/ui/skeleton.tsx
+++ b/frontend/src/components/ui/skeleton.tsx
@@ -0,0 +1,7 @@
+import { cn } from '@/lib/utils';
+
+function Skeleton({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn('skeleton', className)} {...props} />;
+}
+
+export { Skeleton };
--- a/frontend/src/hooks/useForumLimits.ts
+++ b/frontend/src/hooks/useForumLimits.ts
@@ -0,0 +1,49 @@
+import { useEffect, useState } from 'react';
+import { api } from '../api/client';
+import type { ForumLimitsPublic } from '../api/types';
+
+const DEFAULT_LIMITS: ForumLimitsPublic = {
+  post_title_max: 128,
+  post_tags_max: 256,
+  post_content_max: 50000,
+  comment_max: 5000,
+  search_keyword_min: 1,
+  search_keyword_max: 50,
+  page_size_default: 30,
+  feed_max_pages: 10,
+  feed_max_items: 300,
+  password_min_len: 6,
+  avatar_max_mb: 2,
+};
+
+let cached: ForumLimitsPublic | null = null;
+let inflight: Promise<ForumLimitsPublic> | null = null;
+
+function fetchLimits(): Promise<ForumLimitsPublic> {
+  if (cached) return Promise.resolve(cached);
+  if (inflight) return inflight;
+  inflight = api.forumLimits()
+    .then(limits => {
+      cached = limits;
+      return limits;
+    })
+    .catch(() => DEFAULT_LIMITS)
+    .finally(() => { inflight = null; });
+  return inflight;
+}
+
+/** 获取前台可见的论坛限制配置 */
+export function useForumLimits() {
+  const [limits, setLimits] = useState<ForumLimitsPublic>(cached ?? DEFAULT_LIMITS);
+  const [loading, setLoading] = useState(!cached);
+
+  useEffect(() => {
+    fetchLimits().then(setLimits).finally(() => setLoading(false));
+  }, []);
+
+  return { limits, loading };
+}
+
+export function invalidateForumLimitsCache() {
+  cached = null;
+}
--- a/frontend/src/hooks/useGlobalWheelScroll.ts
+++ b/frontend/src/hooks/useGlobalWheelScroll.ts
@@ -35,6 +35,9 @@ export function useGlobalWheelScroll(scrollRef: RefObject<HTMLElement | null>, e
    if (!root) return;

    const onWheel = (e: WheelEvent) => {
+      // Ctrl/⌘ + 滚轮用于浏览器缩放，不拦截
+      if (e.ctrlKey || e.metaKey) return;
+
      const target = e.target instanceof HTMLElement ? e.target : null;
      if (!target) return;

--- a/frontend/src/hooks/useUnsavedChangesGuard.ts
+++ b/frontend/src/hooks/useUnsavedChangesGuard.ts
@@ -0,0 +1,79 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { useBlocker } from 'react-router-dom';
+
+interface Options {
+  /** 是否存在未保存的修改 */
+  isDirty: boolean;
+}
+
+/**
+ * 拦截页面内导航与关闭标签页，在存在未保存修改时提示用户确认。
+ */
+export function useUnsavedChangesGuard({ isDirty }: Options) {
+  const [dialogOpen, setDialogOpen] = useState(false);
+  const pendingLeaveRef = useRef<(() => void) | null>(null);
+  /** 同步标记，避免 setState 未及时生效导致 useBlocker 二次拦截 */
+  const allowNavigationRef = useRef(false);
+
+  const shouldBlock = isDirty && !allowNavigationRef.current;
+  const blocker = useBlocker(() => isDirty && !allowNavigationRef.current);
+
+  useEffect(() => {
+    if (blocker.state === 'blocked') {
+      setDialogOpen(true);
+    }
+  }, [blocker.state]);
+
+  useEffect(() => {
+    if (!shouldBlock) return;
+    const onBeforeUnload = (e: BeforeUnloadEvent) => {
+      e.preventDefault();
+      e.returnValue = '';
+    };
+    window.addEventListener('beforeunload', onBeforeUnload);
+    return () => window.removeEventListener('beforeunload', onBeforeUnload);
+  }, [shouldBlock]);
+
+  const stayOnPage = useCallback(() => {
+    setDialogOpen(false);
+    pendingLeaveRef.current = null;
+    if (blocker.state === 'blocked') {
+      blocker.reset?.();
+    }
+  }, [blocker]);
+
+  const discardAndLeave = useCallback(() => {
+    setDialogOpen(false);
+    allowNavigationRef.current = true;
+    if (blocker.state === 'blocked') {
+      blocker.proceed?.();
+      return;
+    }
+    const action = pendingLeaveRef.current;
+    pendingLeaveRef.current = null;
+    action?.();
+  }, [blocker]);
+
+  /** 主动发起离开（如点击返回按钮） */
+  const requestLeave = useCallback((action: () => void) => {
+    if (!shouldBlock) {
+      action();
+      return;
+    }
+    pendingLeaveRef.current = action;
+    setDialogOpen(true);
+  }, [shouldBlock]);
+
+  /** 保存成功后调用，允许后续导航不再拦截 */
+  const markSaved = useCallback(() => {
+    allowNavigationRef.current = true;
+  }, []);
+
+  return {
+    dialogOpen,
+    stayOnPage,
+    discardAndLeave,
+    requestLeave,
+    markSaved,
+  };
+}
--- a/frontend/src/layouts/AdminLayout.tsx
+++ b/frontend/src/layouts/AdminLayout.tsx
@@ -0,0 +1,97 @@
+import { useEffect } from 'react';
+import { Outlet, NavLink, useNavigate } from 'react-router-dom';
+import {
+  LayoutDashboard, FolderKanban, FileText, MessageSquare, Users, Settings, ArrowLeft,
+} from 'lucide-react';
+import { Spinner } from '@/components/ui/spinner';
+import { useAuth } from '../hooks/useAuth';
+import { notify } from '@/lib/notify';
+import { cn } from '@/lib/utils';
+
+const NAV = [
+  { to: '/admin/dashboard', label: '仪表盘', icon: LayoutDashboard },
+  { to: '/admin/boards', label: '板块管理', icon: FolderKanban },
+  { to: '/admin/posts', label: '帖子管理', icon: FileText },
+  { to: '/admin/comments', label: '评论管理', icon: MessageSquare },
+  { to: '/admin/users', label: '用户管理', icon: Users },
+  { to: '/admin/settings', label: '系统设置', icon: Settings },
+];
+
+/** React 管理后台布局，与前台 SPA 风格统一 */
+export default function AdminLayout() {
+  const { user, loading } = useAuth();
+  const nav = useNavigate();
+
+  useEffect(() => {
+    if (loading) return;
+    if (!user) {
+      nav('/login');
+      return;
+    }
+    if (user.role !== 'admin') {
+      notify.warning('需要管理员权限');
+      nav('/');
+    }
+  }, [user, loading, nav]);
+
+  if (loading) {
+    return <div className="flex justify-center py-24"><Spinner size="lg" /></div>;
+  }
+  if (!user || user.role !== 'admin') return null;
+
+  return (
+    <div className="admin-shell">
+      <header className="admin-topbar">
+        <div className="admin-topbar-brand">
+          <div className="admin-topbar-mark">姜</div>
+          <div>
+            <div className="admin-topbar-title">姜十三论坛</div>
+            <div className="admin-topbar-sub">管理后台</div>
+          </div>
+        </div>
+        <div className="admin-topbar-actions">
+          <button type="button" className="admin-link-btn" onClick={() => nav('/')}>
+            <ArrowLeft size={16} />
+            返回论坛
+          </button>
+          <span className="admin-topbar-user">{user.nickname}</span>
+        </div>
+      </header>
+
+      <div className="admin-body">
+        <aside className="admin-sidebar">
+          {NAV.map(({ to, label, icon: Icon }) => (
+            <NavLink
+              key={to}
+              to={to}
+              className={({ isActive }) => cn('admin-nav-item', isActive && 'active')}
+            >
+              <Icon size={16} />
+              {label}
+            </NavLink>
+          ))}
+        </aside>
+        <main className="admin-main">
+          <Outlet />
+        </main>
+      </div>
+    </div>
+  );
+}
+
+/** 管理页通用权限守卫 */
+export function useAdminGuard() {
+  const { user, loading } = useAuth();
+  const nav = useNavigate();
+
+  useEffect(() => {
+    if (loading) return;
+    if (!user) nav('/login');
+    else if (user.role !== 'admin') {
+      notify.warning('需要管理员权限');
+      nav('/');
+    }
+  }, [user, loading, nav]);
+
+  return { user, loading, ready: !loading && !!user && user.role === 'admin' };
+}
--- a/frontend/src/layouts/MainLayout.tsx
+++ b/frontend/src/layouts/MainLayout.tsx
@@ -9,7 +9,6 @@ import {
  DropdownMenuSeparator,
  DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu';
-import { openAdminDashboard } from '../utils/admin';
 import { useAuth } from '../hooks/useAuth';
 import { useTheme, useMediaQuery } from '../hooks/useTheme';
 import { api } from '../api/client';
@@ -17,6 +16,12 @@ import type { Board, PostItem, Notification, OnlineStats, ForumStats } from '../
 import { getCachedBoards, getCachedStats, setCachedBoards, setCachedStats } from '../utils/layoutCache';
 import Sidebar, { isNeutralSidebarRoute } from '../components/Sidebar';
 import RightPanel from '../components/RightPanel';
+import { useForumLimits } from '../hooks/useForumLimits';
+import { buildHomeUrl, parseFeedSort } from '../components/FeedSortBar';
+import { navigateFeed } from '../utils/feedCache';
+import { notify } from '@/lib/notify';
+import { cn } from '@/lib/utils';
+import { getBoardThemeIndex } from '../utils/boardTheme';

 export default function MainLayout() {
  const { user, loading: authLoading, logout } = useAuth();
@@ -35,6 +40,8 @@ export default function MainLayout() {
  const [online, setOnline] = useState<OnlineStats | null>(null);
  const [boardId, setBoardId] = useState(Number(params.get('board')) || 0);
  const [keyword, setKeyword] = useState(params.get('keyword') || '');
+  const feedSort = parseFeedSort(params.get('sort'));
+  const { limits: forumLimits } = useForumLimits();

  useEffect(() => { setBoardId(Number(params.get('board')) || 0); }, [params]);
  useEffect(() => { setKeyword(params.get('keyword') || ''); }, [params]);
@@ -84,8 +91,21 @@ export default function MainLayout() {
  }, [refreshBoards, refreshOnline]);

  const doSearch = () => {
-    if (keyword.trim()) nav(`/?keyword=${encodeURIComponent(keyword.trim())}`);
-    else nav('/');
+    const kw = keyword.trim();
+    if (!kw) {
+      nav('/');
+      return;
+    }
+    const len = [...kw].length;
+    if (forumLimits.search_keyword_min > 0 && len < forumLimits.search_keyword_min) {
+      notify.warning(`搜索关键词至少 ${forumLimits.search_keyword_min} 个字`);
+      return;
+    }
+    if (forumLimits.search_keyword_max > 0 && len > forumLimits.search_keyword_max) {
+      notify.warning(`搜索关键词最多 ${forumLimits.search_keyword_max} 个字`);
+      return;
+    }
+    nav(`/?keyword=${encodeURIComponent(kw)}`);
  };

  const userInitial = user?.nickname?.charAt(0) || '?';
@@ -96,7 +116,7 @@ export default function MainLayout() {
      <div className="app-frame">
      <header className="app-header">
        <div className="header-inner">
-          <button type="button" className="header-brand" onClick={() => nav('/')}>
+          <button type="button" className="header-brand" onClick={() => navigateFeed(nav, '/')}>
            <span className="header-logo-mark">姜</span>
            {!isMobile && <span className="header-logo-text">姜十三论坛</span>}
          </button>
@@ -110,6 +130,7 @@ export default function MainLayout() {
              placeholder="搜索帖子..."
              value={keyword}
              onChange={e => setKeyword(e.target.value)}
+              maxLength={forumLimits.search_keyword_max > 0 ? forumLimits.search_keyword_max : undefined}
              onKeyDown={e => e.key === 'Enter' && doSearch()}
            />
            {keyword && (
@@ -156,14 +177,17 @@ export default function MainLayout() {
                        : <span className="header-user-initial">{userInitial}</span>}
                    </button>
                  </DropdownMenuTrigger>
-                  <DropdownMenuContent align="end" className="w-40">
+                  <DropdownMenuContent
+                    align="end"
+                    className="w-40"
+                    onCloseAutoFocus={(e) => e.preventDefault()}
+                  >
                    <DropdownMenuItem onClick={() => nav('/profile')}>个人中心</DropdownMenuItem>
                    <DropdownMenuItem onClick={() => nav('/favorites')}>我的收藏</DropdownMenuItem>
                    {user.role === 'admin' && (
                      <>
                        <DropdownMenuSeparator />
-                        <DropdownMenuItem onClick={() => nav('/boards')}>管理板块</DropdownMenuItem>
-                        <DropdownMenuItem onClick={openAdminDashboard}>系统后台</DropdownMenuItem>
+                        <DropdownMenuItem onClick={() => nav('/admin/dashboard')}>管理后台</DropdownMenuItem>
                      </>
                    )}
                    <DropdownMenuSeparator />
@@ -197,15 +221,23 @@ export default function MainLayout() {
            <div className="mobile-board-bar">
              <span
                className={`board-chip ${mobileActiveBoard === 0 ? 'active' : ''}`}
-                onClick={() => { setBoardId(0); nav('/'); }}
+                onClick={() => { setBoardId(0); navigateFeed(nav, buildHomeUrl(0, feedSort)); }}
              >全部</span>
-              {boards.map(b => (
-                <span
-                  key={b.id}
-                  className={`board-chip ${mobileActiveBoard === b.id ? 'active' : ''}`}
-                  onClick={() => { setBoardId(b.id); nav(`/?board=${b.id}`); }}
-                >{b.name}</span>
-              ))}
+              {boards.map(b => {
+                const themeIdx = getBoardThemeIndex(b);
+                const isActive = mobileActiveBoard === b.id;
+                return (
+                  <span
+                    key={b.id}
+                    className={cn(
+                      'board-chip',
+                      isActive && 'active',
+                      isActive && `board-chip--${themeIdx}`,
+                    )}
+                    onClick={() => { setBoardId(b.id); navigateFeed(nav, buildHomeUrl(b.id, feedSort)); }}
+                  >{b.name}</span>
+                );
+              })}
            </div>
          )}
          <Suspense fallback={<PageLoader />}>
--- a/frontend/src/pages/BoardsManagePage.tsx
+++ b/frontend/src/pages/BoardsManagePage.tsx
@@ -1,9 +1,8 @@
 import { useState, useEffect } from 'react';
-import { useNavigate } from 'react-router-dom';
 import { useForm } from 'react-hook-form';
 import { zodResolver } from '@hookform/resolvers/zod';
 import { z } from 'zod';
-import { ArrowLeft, Plus } from 'lucide-react';
+import { Plus } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Textarea } from '@/components/ui/textarea';
@@ -24,21 +23,26 @@ import {
  Form, FormControl, FormField, FormItem, FormLabel, FormMessage,
 } from '@/components/ui/form';
 import { notify } from '@/lib/notify';
+import { cn } from '@/lib/utils';
 import { api } from '../api/client';
-import { useAuth } from '../hooks/useAuth';
+import { useAdminGuard } from '../layouts/AdminLayout';
 import type { Board } from '../api/types';
+import { BoardColorPicker, BoardIconPicker } from '../components/BoardAppearancePicker';
+import BoardIconDisplay from '../components/BoardIconDisplay';
+import { getBoardThemeIndex } from '../utils/boardTheme';

 const boardSchema = z.object({
  name: z.string().min(1, '请输入名称').max(64),
  description: z.string().max(500).optional(),
  sort_order: z.coerce.number().min(0),
+  icon: z.string().max(64).optional(),
+  color_index: z.coerce.number().min(-1).max(7),
 });

 type BoardFormValues = z.infer<typeof boardSchema>;

 export default function BoardsManagePage() {
-  const nav = useNavigate();
-  const { user, loading: authLoading } = useAuth();
+  const { ready } = useAdminGuard();
  const [boards, setBoards] = useState<Board[]>([]);
  const [loading, setLoading] = useState(true);
  const [modalOpen, setModalOpen] = useState(false);
@@ -47,9 +51,12 @@ export default function BoardsManagePage() {

  const form = useForm<BoardFormValues>({
    resolver: zodResolver(boardSchema),
-    defaultValues: { name: '', description: '', sort_order: 1 },
+    defaultValues: { name: '', description: '', sort_order: 1, icon: '', color_index: -1 },
  });

+  const watchColorIndex = form.watch('color_index');
+  const editingPreviewId = editing?.id ?? boards.length + 1;
+
  const load = () => {
    setLoading(true);
    api.boards()
@@ -59,15 +66,12 @@ export default function BoardsManagePage() {
  };

  useEffect(() => {
-    if (authLoading) return;
-    if (!user) { nav('/login'); return; }
-    if (user.role !== 'admin') { nav('/'); notify.warning('需要管理员权限'); return; }
-    load();
-  }, [user, authLoading, nav]);
+    if (ready) load();
+  }, [ready]);

  const openCreate = () => {
    setEditing(null);
-    form.reset({ name: '', description: '', sort_order: boards.length + 1 });
+    form.reset({ name: '', description: '', sort_order: boards.length + 1, icon: '', color_index: -1 });
    setModalOpen(true);
  };

@@ -77,6 +81,8 @@ export default function BoardsManagePage() {
      name: board.name,
      description: board.description ?? '',
      sort_order: board.sort_order,
+      icon: board.icon ?? '',
+      color_index: board.color_index ?? -1,
    });
    setModalOpen(true);
  };
@@ -84,11 +90,18 @@ export default function BoardsManagePage() {
  const handleSubmit = async (values: BoardFormValues) => {
    setSubmitting(true);
    try {
+      const body = {
+        name: values.name,
+        description: values.description ?? '',
+        sort_order: values.sort_order,
+        icon: values.icon ?? '',
+        color_index: values.color_index ?? -1,
+      };
      if (editing) {
-        await api.updateBoard(editing.id, values);
+        await api.updateBoard(editing.id, body);
        notify.success('板块已更新');
      } else {
-        await api.createBoard(values);
+        await api.createBoard(body);
        notify.success('板块已创建');
      }
      setModalOpen(false);
@@ -112,31 +125,26 @@ export default function BoardsManagePage() {
    }
  };

-  if (authLoading) {
+  if (!ready) {
    return <div className="flex justify-center py-16"><Spinner size="lg" /></div>;
  }

-  if (!user || user.role !== 'admin') return null;
-
  return (
-    <div className="page-wrap">
-      <div className="page-inner-wide">
-        <Button variant="ghost" className="mb-3" onClick={() => nav('/')}>
-          <ArrowLeft />
-          返回
-        </Button>
-        <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'flex-start', marginBottom: 20 }}>
+    <div className="admin-page">
+      <div className="admin-page-head">
+        <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'flex-start' }}>
          <div>
-            <h1 className="page-title">板块管理</h1>
-            <p className="page-desc">创建、编辑或删除论坛板块，用户发帖前需先有板块</p>
+            <h1>板块管理</h1>
+            <p>创建、编辑或删除论坛板块；可为每个板块自定义图标与色标</p>
          </div>
          <Button onClick={openCreate}>
            <Plus />
            新建板块
          </Button>
        </div>
+      </div>

-        <div className="section-card" style={{ padding: 0, overflow: 'hidden' }}>
+      <div className="admin-card">
          {loading ? (
            <div className="flex justify-center py-12"><Spinner size="lg" /></div>
          ) : (
@@ -145,6 +153,7 @@ export default function BoardsManagePage() {
                <TableHeader>
                  <TableRow>
                    <TableHead className="w-[60px]">ID</TableHead>
+                    <TableHead className="w-[52px]">图标</TableHead>
                    <TableHead>名称</TableHead>
                    <TableHead>简介</TableHead>
                    <TableHead className="w-[70px]">排序</TableHead>
@@ -153,9 +162,16 @@ export default function BoardsManagePage() {
                  </TableRow>
                </TableHeader>
                <TableBody>
-                  {boards.map(board => (
+                  {boards.map(board => {
+                    const themeIdx = getBoardThemeIndex(board);
+                    return (
                    <TableRow key={board.id}>
                      <TableCell>{board.id}</TableCell>
+                      <TableCell>
+                        <span className={cn('board-table-icon', `sidebar-board-icon--${themeIdx}`)}>
+                          <BoardIconDisplay board={board} />
+                        </span>
+                      </TableCell>
                      <TableCell><strong>{board.name}</strong></TableCell>
                      <TableCell className="max-w-[200px] truncate">{board.description}</TableCell>
                      <TableCell>{board.sort_order}</TableCell>
@@ -187,7 +203,8 @@ export default function BoardsManagePage() {
                        </div>
                      </TableCell>
                    </TableRow>
-                  ))}
+                    );
+                  })}
                </TableBody>
              </Table>
              {boards.length === 0 && (
@@ -197,11 +214,10 @@ export default function BoardsManagePage() {
              )}
            </>
          )}
-        </div>
      </div>

      <Dialog open={modalOpen} onOpenChange={setModalOpen}>
-        <DialogContent>
+        <DialogContent className="board-manage-dialog">
          <DialogHeader>
            <DialogTitle>{editing ? '编辑板块' : '新建板块'}</DialogTitle>
          </DialogHeader>
@@ -233,6 +249,40 @@ export default function BoardsManagePage() {
                  </FormItem>
                )}
              />
+              <FormField
+                control={form.control}
+                name="icon"
+                render={({ field }) => (
+                  <FormItem>
+                    <FormLabel>板块图标</FormLabel>
+                    <FormControl>
+                      <BoardIconPicker
+                        value={field.value ?? ''}
+                        onChange={field.onChange}
+                        board={{ id: editingPreviewId, color_index: watchColorIndex }}
+                      />
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
+              <FormField
+                control={form.control}
+                name="color_index"
+                render={({ field }) => (
+                  <FormItem>
+                    <FormLabel>色标颜色</FormLabel>
+                    <FormControl>
+                      <BoardColorPicker
+                        value={field.value ?? -1}
+                        onChange={field.onChange}
+                        boardId={editingPreviewId}
+                      />
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
              <FormField
                control={form.control}
                name="sort_order"
--- a/frontend/src/pages/ComposePage.tsx
+++ b/frontend/src/pages/ComposePage.tsx
@@ -1,13 +1,23 @@
-import { useState, useEffect } from 'react';
+import { useState, useEffect, useMemo } from 'react';
 import { useNavigate, useSearchParams, useParams } from 'react-router-dom';
 import { ArrowLeft, Send, Tag } from 'lucide-react';
 import { notify } from '@/lib/notify';
 import { api } from '../api/client';
 import { useAuth } from '../hooks/useAuth';
 import type { Board } from '../api/types';
+import { isHtmlEmpty } from '../utils/postContent';
+import { useForumLimits } from '../hooks/useForumLimits';
+import { useUnsavedChangesGuard } from '../hooks/useUnsavedChangesGuard';
 import ArticleEditor from '../components/ArticleEditor';
+import UnsavedChangesDialog from '../components/UnsavedChangesDialog';
 import { Spinner } from '@/components/ui/spinner';
-import { markdownToHtml, htmlToMarkdown } from '../utils/markdown';
+
+interface ComposeBaseline {
+  title: string;
+  tags: string;
+  content: string;
+  boardId: string;
+}

 export default function ComposePage() {
  const nav = useNavigate();
@@ -17,6 +27,7 @@ export default function ComposePage() {
  const [params] = useSearchParams();
  const defaultBoard = params.get('board') || '';
  const { user, loading: authLoading } = useAuth();
+  const { limits } = useForumLimits();

  const [boards, setBoards] = useState<Board[]>([]);
  const [boardId, setBoardId] = useState(defaultBoard);
@@ -25,6 +36,7 @@ export default function ComposePage() {
  const [content, setContent] = useState('');
  const [publishing, setPublishing] = useState(false);
  const [loading, setLoading] = useState(isEdit);
+  const [baseline, setBaseline] = useState<ComposeBaseline | null>(null);

  useEffect(() => {
    if (authLoading) return;
@@ -32,21 +44,33 @@ export default function ComposePage() {

    if (isEdit) {
      setLoading(true);
-      Promise.all([api.boards(), api.post(editId!)])
+      Promise.all([api.boards(), api.post(editId!, { skipView: true })])
        .then(([boardsData, postData]) => {
          const list = boardsData.boards ?? [];
          setBoards(list);
          const post = postData.post;
-          const canEdit = user.role === 'admin' || post.user_id === user.id;
-          if (!canEdit) {
+          const isOwnerOrAdmin = user.role === 'admin' || post.user_id === user.id;
+          if (!isOwnerOrAdmin) {
            notify.error('无权编辑此帖子');
            nav(`/post/${editId}`);
            return;
          }
-          setBoardId(String(post.board_id));
+          if (!postData.can_edit) {
+            notify.error(postData.edit_block_reason || '当前无法编辑此帖子');
+            nav(`/post/${editId}`);
+            return;
+          }
+          const loadedBoardId = String(post.board_id);
+          setBoardId(loadedBoardId);
          setTitle(post.title);
          setTags(post.tags ?? '');
-          setContent(htmlToMarkdown(post.content ?? ''));
+          setContent(post.content ?? '');
+          setBaseline({
+            title: post.title,
+            tags: post.tags ?? '',
+            content: post.content ?? '',
+            boardId: loadedBoardId,
+          });
        })
        .catch((e: unknown) => {
          notify.error(e instanceof Error ? e.message : '加载帖子失败');
@@ -59,12 +83,37 @@ export default function ComposePage() {
    api.boards().then(d => {
      const list = d.boards ?? [];
      setBoards(list);
+      const initialBoardId = defaultBoard || (list.length > 0 ? String(list[0].id) : '');
      if (!defaultBoard && list.length > 0) {
-        setBoardId(String(list[0].id));
+        setBoardId(initialBoardId);
      }
+      setBaseline({
+        title: '',
+        tags: '',
+        content: '',
+        boardId: initialBoardId,
+      });
    }).catch(() => {});
  }, [user, authLoading, nav, defaultBoard, isEdit, editId]);

+  const isDirty = useMemo(() => {
+    if (!baseline) return false;
+    return (
+      title !== baseline.title
+      || tags !== baseline.tags
+      || content !== baseline.content
+      || (!isEdit && boardId !== baseline.boardId)
+    );
+  }, [baseline, title, tags, content, boardId, isEdit]);
+
+  const {
+    dialogOpen,
+    stayOnPage,
+    discardAndLeave,
+    requestLeave,
+    markSaved,
+  } = useUnsavedChangesGuard({ isDirty });
+
  if (authLoading) {
    return (
      <div className="compose-page compose-page--empty">
@@ -91,7 +140,7 @@ export default function ComposePage() {
          <h2>暂无可发帖板块</h2>
          <p>需要管理员先创建板块后才能发布内容</p>
          {user.role === 'admin' ? (
-            <button type="button" className="compose-primary-btn" onClick={() => nav('/boards')}>
+            <button type="button" className="compose-primary-btn" onClick={() => nav('/admin/boards')}>
              去创建板块
            </button>
          ) : (
@@ -108,22 +157,24 @@ export default function ComposePage() {
    const trimmedTitle = title.trim();
    if (!isEdit && !boardId) { notify.warning('请选择板块'); return; }
    if (!trimmedTitle) { notify.warning('请输入标题'); return; }
-    if (!content.trim()) { notify.warning('请输入正文内容'); return; }
+    if (isHtmlEmpty(content)) { notify.warning('请输入正文内容'); return; }

    setPublishing(true);
    try {
      const payload = {
        title: trimmedTitle,
-        content: markdownToHtml(content),
+        content: content.trim(),
        tags: tags.trim(),
      };
      if (isEdit) {
        await api.updatePost(editId!, payload);
        notify.success('帖子已更新');
+        markSaved();
        nav(`/post/${editId}`);
      } else {
        const res = await api.createPost({ board_id: boardId, ...payload });
        notify.success('发帖成功');
+        markSaved();
        nav(`/post/${res.post_id}`);
      }
    } catch (e: unknown) {
@@ -139,7 +190,11 @@ export default function ComposePage() {
    <div className="compose-page">
      <div className="compose-canvas">
        <header className="compose-header">
-          <button type="button" className="compose-back" onClick={() => nav(isEdit ? `/post/${editId}` : -1)}>
+          <button
+            type="button"
+            className="compose-back"
+            onClick={() => requestLeave(() => nav(isEdit ? `/post/${editId}` : -1))}
+          >
            <ArrowLeft size={16} />
            <span>返回</span>
          </button>
@@ -182,7 +237,7 @@ export default function ComposePage() {
              placeholder="添加标签，逗号分隔"
              value={tags}
              onChange={e => setTags(e.target.value)}
-              maxLength={128}
+              maxLength={limits.post_tags_max > 0 ? limits.post_tags_max : undefined}
            />
          </div>
        </div>
@@ -194,7 +249,7 @@ export default function ComposePage() {
            placeholder="输入文章标题…"
            value={title}
            onChange={e => setTitle(e.target.value)}
-            maxLength={256}
+            maxLength={limits.post_title_max > 0 ? limits.post_title_max : undefined}
          />
          {currentBoard && (
            <div className="compose-subtitle">
@@ -204,10 +259,16 @@ export default function ComposePage() {
          <ArticleEditor
            value={content}
            onChange={setContent}
-            placeholder="开始写作。支持 Markdown 语法，右侧可实时预览渲染效果。"
+            placeholder="开始写作。所见即所得，选中文字后使用工具栏设置格式。"
          />
        </div>
      </div>
+      <UnsavedChangesDialog
+        open={dialogOpen}
+        onStay={stayOnPage}
+        onLeave={discardAndLeave}
+        isEdit={isEdit}
+      />
    </div>
  );
 }
--- a/frontend/src/pages/HomePage.tsx
+++ b/frontend/src/pages/HomePage.tsx
@@ -1,32 +1,78 @@
-import { useState, useEffect, useCallback } from 'react';
-import { useNavigate, useOutletContext, useSearchParams } from 'react-router-dom';
+import { useState, useEffect, useCallback, useRef, useMemo } from 'react';
+import { useNavigate, useOutletContext, useSearchParams, useLocation } from 'react-router-dom';
 import { notify } from '@/lib/notify';
 import { api } from '../api/client';
 import type { PostItem } from '../api/types';
 import type { LayoutCtx } from '../layouts/MainLayout';
 import VirtualPostList from '../components/VirtualPostList';
 import FeedHeader from '../components/FeedHeader';
-import BoardGrid from '../components/BoardGrid';
+import FeedSortBar, { parseFeedSort, buildHomeUrl, type FeedSort } from '../components/FeedSortBar';
+import { useForumLimits } from '../hooks/useForumLimits';
+import {
+  getFeedCache,
+  setFeedCache,
+  clearAllFeedCache,
+  navigateFeed,
+  FEED_RESET_EVENT,
+  type FeedNavState,
+} from '../utils/feedCache';

 export default function HomePage() {
  const nav = useNavigate();
+  const location = useLocation();
  const [params] = useSearchParams();
  const ctx = useOutletContext<LayoutCtx>();
+  const { limits } = useForumLimits();
+  const pageSize = limits.page_size_default;
+  const feedMaxPages = limits.feed_max_pages;
+  const feedMaxItems = limits.feed_max_items;
+
  const boardId = Number(params.get('board')) || ctx?.boardId || 0;
  const keyword = params.get('keyword') || '';
+  const sort = parseFeedSort(params.get('sort'));
+  const initialCache = getFeedCache(boardId, keyword, sort);

-  const [posts, setPosts] = useState<PostItem[]>([]);
-  const [postTotal, setPostTotal] = useState(0);
-  const [page, setPage] = useState(1);
-  const [hasMore, setHasMore] = useState(true);
-  const [loading, setLoading] = useState(true);
+  const [posts, setPosts] = useState<PostItem[]>(() => initialCache?.posts ?? []);
+  const [postTotal, setPostTotal] = useState(() => initialCache?.postTotal ?? 0);
+  const [page, setPage] = useState(() => initialCache?.page ?? 1);
+  const [hasMore, setHasMore] = useState(() => initialCache?.hasMore ?? true);
+  const [loading, setLoading] = useState(() => !initialCache);
+  const [restoreScrollTop, setRestoreScrollTop] = useState<number | null>(() => initialCache?.scrollTop ?? null);
+  const [listResetKey, setListResetKey] = useState(0);
+  const scrollTopRef = useRef(initialCache?.scrollTop ?? 0);
+  const pageWrapRef = useRef<HTMLDivElement>(null);
+  /** 主动刷新时不把旧列表/滚动位置写回 cache */
+  const skipCacheSaveRef = useRef(false);
+
+  const canAutoLoad = useMemo(
+    () => hasMore && page < feedMaxPages && posts.length < feedMaxItems,
+    [hasMore, page, feedMaxPages, posts.length, feedMaxItems],
+  );
+
+  const resetFeedView = useCallback(() => {
+    setRestoreScrollTop(null);
+    scrollTopRef.current = 0;
+    setListResetKey(k => k + 1);
+    pageWrapRef.current?.scrollTo(0);
+  }, []);
+
+  const beginFeedRefresh = useCallback(() => {
+    skipCacheSaveRef.current = true;
+    clearAllFeedCache();
+    resetFeedView();
+  }, [resetFeedView]);

  const load = useCallback(async (p: number, reset = false) => {
    setLoading(true);
    try {
-      const data = await api.posts({ page: p, size: 30, board_id: boardId || '', keyword });
+      const data = await api.posts({
+        page: p,
+        size: pageSize,
+        board_id: boardId || '',
+        keyword,
+        sort: sort === 'latest' ? '' : sort,
+      });
      const batch = Array.isArray(data.posts) ? data.posts : [];
-      // 切换筛选时保留旧列表，避免中间区域瞬间空白
      setPosts(prev => (reset ? batch : [...prev, ...batch]));
      setPostTotal(data.total ?? 0);
      setHasMore(!!data.has_more);
@@ -37,51 +83,134 @@ export default function HomePage() {
    } finally {
      setLoading(false);
    }
-  }, [boardId, keyword]);
+  }, [boardId, keyword, sort, pageSize]);
+
+  /** 有缓存时静默刷新第 1 页，合并置顶等变化同时保留已加载的历史 */
+  const revalidate = useCallback(async () => {
+    try {
+      const data = await api.posts({
+        page: 1,
+        size: pageSize,
+        board_id: boardId || '',
+        keyword,
+        sort: sort === 'latest' ? '' : sort,
+      });
+      const fresh = Array.isArray(data.posts) ? data.posts : [];
+      const freshIds = new Set(fresh.map(p => p.id));
+      setPosts(prev => [...fresh, ...prev.filter(p => !freshIds.has(p.id))]);
+      setPostTotal(data.total ?? 0);
+      setHasMore(!!data.has_more);
+    } catch {
+      // 静默失败，保留缓存数据
+    }
+  }, [boardId, keyword, sort, pageSize]);
+
+  const loadNextPage = useCallback(() => {
+    if (loading || !hasMore) return;
+    load(page + 1);
+  }, [loading, hasMore, page, load]);

  useEffect(() => {
+    const forceRefresh = (location.state as FeedNavState | null)?.refreshFeed;
+    if (forceRefresh) {
+      beginFeedRefresh();
+      load(1, true);
+      return;
+    }
+    const cached = getFeedCache(boardId, keyword, sort);
+    if (cached) {
+      setPosts(cached.posts);
+      setPostTotal(cached.postTotal);
+      setPage(cached.page);
+      setHasMore(cached.hasMore);
+      setRestoreScrollTop(cached.scrollTop);
+      scrollTopRef.current = cached.scrollTop;
+      setLoading(false);
+      revalidate();
+      return;
+    }
+    setRestoreScrollTop(null);
+    scrollTopRef.current = 0;
    load(1, true);
-  }, [boardId, keyword, load]);
+  }, [boardId, keyword, sort, location.key, location.state, load, revalidate, beginFeedRefresh]);

  useEffect(() => {
-    const fn = () => load(1, true);
+    return () => {
+      if (skipCacheSaveRef.current || posts.length === 0) return;
+      setFeedCache(boardId, keyword, sort, {
+        posts,
+        postTotal,
+        page,
+        hasMore,
+        scrollTop: scrollTopRef.current,
+      });
+    };
+  }, [boardId, keyword, sort, posts, postTotal, page, hasMore]);
+
+  useEffect(() => {
+    if (!loading && posts.length > 0) {
+      skipCacheSaveRef.current = false;
+    }
+  }, [loading, posts.length]);
+
+  useEffect(() => {
+    const onFeedReset = () => {
+      beginFeedRefresh();
+    };
+    window.addEventListener(FEED_RESET_EVENT, onFeedReset);
+    return () => window.removeEventListener(FEED_RESET_EVENT, onFeedReset);
+  }, [beginFeedRefresh]);
+
+  useEffect(() => {
+    const fn = () => {
+      beginFeedRefresh();
+      load(1, true);
+    };
    window.addEventListener('posts-refresh', fn);
    return () => window.removeEventListener('posts-refresh', fn);
-  }, [load]);
+  }, [beginFeedRefresh, load]);

-  const showBoardGrid = !keyword;
+  const handleSortChange = (next: FeedSort) => {
+    if (next === sort) {
+      beginFeedRefresh();
+      load(1, true);
+      return;
+    }
+    navigateFeed(nav, buildHomeUrl(boardId, next));
+  };
+
+  const showSortBar = !keyword;

  return (
-    <div className="page-wrap">
-      <FeedHeader
-        boardId={boardId}
-        keyword={keyword}
-        boards={ctx?.boards ?? []}
-        stats={ctx?.stats ?? null}
-        postTotal={postTotal}
-      />
-      {showBoardGrid && (
-        <BoardGrid
-          boards={ctx?.boards ?? []}
-          loading={!ctx?.layoutReady}
-          selectedId={boardId}
-          onSelect={(id) => {
-            ctx?.setBoardId(id);
-            nav(id ? `/?board=${id}` : '/');
-          }}
-        />
-      )}
-      <div className="post-list-bar">
-        <span>{keyword ? '搜索结果' : '帖子列表'}</span>
-        <span>共 {postTotal} 条</span>
-      </div>
-      <VirtualPostList
+    <div className="page-wrap" ref={pageWrapRef}>
+      <div className="feed-panel">
+        <div className="feed-top">
+          <FeedHeader
+            boardId={boardId}
+            keyword={keyword}
+            boards={ctx?.boards ?? []}
+            stats={ctx?.stats ?? null}
+            postTotal={postTotal}
+          />
+          {showSortBar && (
+            <FeedSortBar value={sort} onChange={handleSortChange} postTotal={postTotal} />
+          )}
+        </div>
+        <VirtualPostList
        posts={posts}
+        sort={sort}
        loading={loading}
        hasMore={hasMore}
-        onLoadMore={() => !loading && hasMore && load(page + 1)}
+        canAutoLoad={canAutoLoad}
+        postTotal={postTotal}
+        onLoadMore={loadNextPage}
        onSelect={(id) => nav(`/post/${id}`)}
+        restoreScrollTop={restoreScrollTop}
+        resetScrollKey={listResetKey}
+        onScrollTopChange={(top) => { scrollTopRef.current = top; }}
+        onScrollRestored={() => setRestoreScrollTop(null)}
      />
+      </div>
    </div>
  );
 }
--- a/frontend/src/pages/PostDetailPage.tsx
+++ b/frontend/src/pages/PostDetailPage.tsx
@@ -1,8 +1,10 @@
 import { useState, useEffect, useLayoutEffect, useRef, useCallback } from 'react';
 import { useParams, useNavigate } from 'react-router-dom';
-import { ArrowLeft, ThumbsUp, Star, Pencil } from 'lucide-react';
+import { ArrowLeft, ThumbsUp, Star, Pencil, Pin, History, Lock } from 'lucide-react';
+import PinnedIcon from '@/components/PinnedIcon';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
+import BoardBadge from '@/components/BoardBadge';
 import { Spinner } from '@/components/ui/spinner';
 import { notify } from '@/lib/notify';
 import { api } from '../api/client';
@@ -10,9 +12,11 @@ import type { PostItem, Comment } from '../api/types';
 import CommentThreadList from '../components/CommentThreadList';
 import CommentBox, { type CommentSubmitData } from '../components/CommentBox';
 import PostContent from '../components/PostContent';
+import PostRevisionPanel from '../components/PostRevisionPanel';
 import { useAuth } from '../hooks/useAuth';
-import { formatTime } from '../utils/content';
+import { formatDateTime, isTimeDiffSignificant } from '../utils/content';
 import { loadMyCommentIds, addMyCommentId } from '../utils/guest';
+import { clearAllFeedCache } from '../utils/feedCache';
 import { useGlobalWheelScroll } from '../hooks/useGlobalWheelScroll';

 export default function PostDetailPage() {
@@ -30,6 +34,10 @@ export default function PostDetailPage() {
  const [loading, setLoading] = useState(true);
  const [highlightFloor, setHighlightFloor] = useState<number | null>(null);
  const [submitCount, setSubmitCount] = useState(0);
+  const [canEdit, setCanEdit] = useState(false);
+  const [isEdited, setIsEdited] = useState(false);
+  const [editBlockReason, setEditBlockReason] = useState('');
+  const [showRevisions, setShowRevisions] = useState(false);

  const pageRef = useRef<HTMLDivElement>(null);
  const commentSectionRef = useRef<HTMLDivElement>(null);
@@ -55,6 +63,9 @@ export default function PostDetailPage() {
      setPost(detail.post);
      setLiked(detail.liked);
      setFavorited(detail.favorited);
+      setCanEdit(detail.can_edit ?? false);
+      setIsEdited(detail.is_edited ?? isTimeDiffSignificant(detail.post.created_at, detail.post.updated_at ?? detail.post.created_at));
+      setEditBlockReason(detail.edit_block_reason ?? '');
      setComments(commList);
      await refresh();
    } catch (e: unknown) {
@@ -161,7 +172,39 @@ export default function PostDetailPage() {

  const authorInitial = post.user?.nickname?.[0] || '?';
  const tags = post.tags?.split(/[,，]/).map(t => t.trim()).filter(Boolean) ?? [];
-  const canEdit = user && (user.role === 'admin' || user.id === post.user_id);
+  const isOwnerOrAdmin = user && (user.role === 'admin' || user.id === post.user_id);
+  const isAdmin = user?.role === 'admin';
+  const showEdited = isEdited && post.updated_at;
+
+  const handlePin = async () => {
+    if (!post) return;
+    try {
+      const r = await api.adminPinPost(postId, !post.pinned);
+      setPost(p => p ? { ...p, pinned: r.pinned } : p);
+      clearAllFeedCache();
+      window.dispatchEvent(new Event('posts-refresh'));
+      notify.success(r.message);
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '操作失败');
+    }
+  };
+
+  const handleLock = async () => {
+    if (!post) return;
+    try {
+      const r = await api.adminLockPost(postId, !post.edit_locked);
+      setPost(p => p ? { ...p, edit_locked: r.edit_locked } : p);
+      if (user?.role === 'admin') {
+        setCanEdit(true);
+      } else if (user?.id === post.user_id && r.edit_locked) {
+        setCanEdit(false);
+        setEditBlockReason('帖子已被管理员锁定，无法编辑');
+      }
+      notify.success(r.message);
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '操作失败');
+    }
+  };

  return (
    <div className="page-wrap post-detail-page" ref={pageRef}>
@@ -172,13 +215,13 @@ export default function PostDetailPage() {
            返回
          </Button>
          {post.board && (
-            <Badge variant="green" className="post-detail-board-tag">{post.board.name}</Badge>
+            <BoardBadge board={post.board} className="post-detail-board-tag" />
          )}
        </div>

        <div className="post-detail-head">
          <h1 className="post-detail-title">
-            {post.pinned && <Badge variant="orange" className="mr-2 align-middle">置顶</Badge>}
+            {post.pinned && <PinnedIcon className="mr-2" size={18} />}
            {post.title}
          </h1>
          <div className="post-detail-author-row">
@@ -188,7 +231,16 @@ export default function PostDetailPage() {
            <div className="post-detail-author-info">
              <span className="post-detail-author-name">{post.user?.nickname}</span>
              <span className="post-detail-meta-line">
-                {formatTime(post.created_at)} · {post.view_count} 次浏览
+                发布于 {formatDateTime(post.created_at)}
+                {showEdited && (
+                  <> · 编辑于 {formatDateTime(post.updated_at!)}</>
+                )}
+                {' · '}{post.view_count} 次浏览
+                {post.edit_locked && (
+                  <span className="post-detail-locked-tag" title="管理员已锁定编辑">
+                    <Lock size={12} /> 已锁定
+                  </span>
+                )}
              </span>
            </div>
          </div>
@@ -217,9 +269,40 @@ export default function PostDetailPage() {
              编辑
            </Button>
          )}
+          {isOwnerOrAdmin && isEdited && (
+            <Button variant="outline" size="sm" onClick={() => setShowRevisions(true)}>
+              <History />
+              编辑历史
+            </Button>
+          )}
+          {isOwnerOrAdmin && !canEdit && editBlockReason && (
+            <span className="post-detail-edit-hint" title={editBlockReason}>
+              {editBlockReason}
+            </span>
+          )}
+          {isAdmin && (
+            <>
+              <Button variant="outline" size="sm" onClick={handlePin}>
+                <Pin />
+                {post.pinned ? '取消置顶' : '置顶'}
+              </Button>
+              <Button variant="outline" size="sm" onClick={handleLock}>
+                <Lock />
+                {post.edit_locked ? '解锁编辑' : '锁定编辑'}
+              </Button>
+            </>
+          )}
        </div>
      </div>

+      <PostRevisionPanel
+        postId={postId}
+        currentPost={{ title: post.title, content: post.content ?? '', tags: post.tags ?? '' }}
+        open={showRevisions}
+        onClose={() => setShowRevisions(false)}
+        isLoggedIn={!!user}
+      />
+
      <div className="comment-section" ref={commentSectionRef}>
        <div className="comment-section-bar">
          <span className="comment-section-title">评论区</span>
--- a/frontend/src/pages/ProfilePage.tsx
+++ b/frontend/src/pages/ProfilePage.tsx
@@ -1,9 +1,9 @@
-import { useState, useRef, useEffect } from 'react';
+import { useState, useRef, useEffect, useCallback } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useForm } from 'react-hook-form';
 import { zodResolver } from '@hookform/resolvers/zod';
 import { z } from 'zod';
-import { ArrowLeft, LayoutDashboard, Settings } from 'lucide-react';
+import { ArrowLeft, Camera, LayoutDashboard, Settings, Upload, X } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Badge } from '@/components/ui/badge';
@@ -12,15 +12,17 @@ import { Spinner } from '@/components/ui/spinner';
 import { notify } from '@/lib/notify';
 import { useAuth } from '../hooks/useAuth';
 import { api } from '../api/client';
-import { openAdminDashboard } from '../utils/admin';
+import { useForumLimits } from '../hooks/useForumLimits';
+import AvatarCropDialog from '../components/AvatarCropDialog';
+import { AVATAR_ACCEPT, validateAvatarFile } from '../utils/avatarCrop';

 const nickSchema = z.object({
  nickname: z.string().min(1, '请输入昵称').max(64),
 });

-const pwdSchema = z.object({
+const pwdSchema = (minLen: number) => z.object({
  old_password: z.string().min(1, '请输入当前密码'),
-  new_password: z.string().min(6, '新密码至少 6 位'),
+  new_password: z.string().min(minLen, `新密码至少 ${minLen} 位`),
  confirm_password: z.string().min(1, '请确认新密码'),
 }).refine(d => d.new_password === d.confirm_password, {
  message: '两次输入的新密码不一致',
@@ -28,7 +30,7 @@ const pwdSchema = z.object({
 });

 type NickValues = z.infer<typeof nickSchema>;
-type PwdValues = z.infer<typeof pwdSchema>;
+type PwdValues = z.infer<ReturnType<typeof pwdSchema>>;

 export default function ProfilePage() {
  const nav = useNavigate();
@@ -36,7 +38,16 @@ export default function ProfilePage() {
  const [nickLoading, setNickLoading] = useState(false);
  const [pwdLoading, setPwdLoading] = useState(false);
  const [avatarLoading, setAvatarLoading] = useState(false);
+  const [pendingAvatar, setPendingAvatar] = useState<File | null>(null);
+  const [avatarPreview, setAvatarPreview] = useState<string | null>(null);
+  const [cropOpen, setCropOpen] = useState(false);
+  const [cropImageSrc, setCropImageSrc] = useState<string | null>(null);
+  const [cropFileName, setCropFileName] = useState('');
+  const [dragOver, setDragOver] = useState(false);
  const fileRef = useRef<HTMLInputElement>(null);
+  const dragCounter = useRef(0);
+
+  const { limits } = useForumLimits();

  const nickForm = useForm<NickValues>({
    resolver: zodResolver(nickSchema),
@@ -44,7 +55,7 @@ export default function ProfilePage() {
  });

  const pwdForm = useForm<PwdValues>({
-    resolver: zodResolver(pwdSchema),
+    resolver: zodResolver(pwdSchema(limits.password_min_len)),
    defaultValues: { old_password: '', new_password: '', confirm_password: '' },
  });

@@ -54,6 +65,30 @@ export default function ProfilePage() {
    }
  }, [authLoading, user, nav]);

+  useEffect(() => {
+    return () => {
+      if (avatarPreview) URL.revokeObjectURL(avatarPreview);
+    };
+  }, [avatarPreview]);
+
+  useEffect(() => {
+    return () => {
+      if (cropImageSrc) URL.revokeObjectURL(cropImageSrc);
+    };
+  }, [cropImageSrc]);
+
+  const closeCropDialog = useCallback((open: boolean) => {
+    if (!open) {
+      setCropOpen(false);
+      setCropImageSrc(prev => {
+        if (prev) URL.revokeObjectURL(prev);
+        return null;
+      });
+      setCropFileName('');
+      if (fileRef.current) fileRef.current.value = '';
+    }
+  }, []);
+
  if (authLoading) {
    return <div className="flex justify-center py-16"><Spinner size="lg" /></div>;
  }
@@ -88,26 +123,88 @@ export default function ProfilePage() {
    }
  };

-  const onAvatarChange = async (e: React.ChangeEvent<HTMLInputElement>) => {
-    const file = e.target.files?.[0];
-    if (!file) return;
-    if (file.size > 2 * 1024 * 1024) {
-      notify.error('头像不能超过 2MB');
+  const clearPendingAvatar = () => {
+    if (avatarPreview) URL.revokeObjectURL(avatarPreview);
+    setPendingAvatar(null);
+    setAvatarPreview(null);
+    if (fileRef.current) fileRef.current.value = '';
+  };
+
+  const openCropForFile = (file: File) => {
+    const err = validateAvatarFile(file, limits.avatar_max_mb);
+    if (err) {
+      notify.error(err);
+      if (fileRef.current) fileRef.current.value = '';
      return;
    }
+    if (cropImageSrc) URL.revokeObjectURL(cropImageSrc);
+    setCropFileName(file.name);
+    setCropImageSrc(URL.createObjectURL(file));
+    setCropOpen(true);
+  };
+
+  const onAvatarSelect = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (file) openCropForFile(file);
+  };
+
+  const onCropConfirm = (file: File) => {
+    if (avatarPreview) URL.revokeObjectURL(avatarPreview);
+    setPendingAvatar(file);
+    setAvatarPreview(URL.createObjectURL(file));
+  };
+
+  const onSaveAvatar = async () => {
+    if (!pendingAvatar) return;
    setAvatarLoading(true);
    try {
-      await api.uploadAvatar(file);
+      await api.uploadAvatar(pendingAvatar);
      await refresh();
+      clearPendingAvatar();
      notify.success('头像已更新');
    } catch (err: unknown) {
      notify.error(err instanceof Error ? err.message : '上传失败');
    } finally {
      setAvatarLoading(false);
-      if (fileRef.current) fileRef.current.value = '';
    }
  };

+  const onDragEnter = (e: React.DragEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+    dragCounter.current += 1;
+    if (e.dataTransfer.types.includes('Files')) {
+      setDragOver(true);
+    }
+  };
+
+  const onDragLeave = (e: React.DragEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+    dragCounter.current -= 1;
+    if (dragCounter.current <= 0) {
+      dragCounter.current = 0;
+      setDragOver(false);
+    }
+  };
+
+  const onDragOver = (e: React.DragEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+  };
+
+  const onDrop = (e: React.DragEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+    dragCounter.current = 0;
+    setDragOver(false);
+    if (avatarLoading) return;
+    const file = e.dataTransfer.files?.[0];
+    if (file) openCropForFile(file);
+  };
+
+  const displayAvatar = avatarPreview ?? user.avatar;
+
  return (
    <div className="page-wrap">
      <div className="page-inner-wide" style={{ maxWidth: 640 }}>
@@ -115,18 +212,82 @@ export default function ProfilePage() {
          <ArrowLeft />
          返回
        </Button>
+        <h1 className="page-title mb-4">个人中心</h1>

-        <div className="profile-header">
-          <div className="profile-avatar-lg">
-            {user.avatar ? <img src={user.avatar} alt="" /> : user.nickname[0]}
-          </div>
-          <div>
-            <h1 className="page-title" style={{ marginBottom: 4 }}>{user.nickname}</h1>
-            <div style={{ fontSize: 13, color: 'var(--color-text-3)' }}>@{user.username}</div>
-            {user.role === 'admin' && <Badge variant="green" className="mt-1.5">管理员</Badge>}
+        <div
+          className={`profile-header-card${dragOver ? ' profile-header-card--dragover' : ''}`}
+          onDragEnter={onDragEnter}
+          onDragLeave={onDragLeave}
+          onDragOver={onDragOver}
+          onDrop={onDrop}
+        >
+          {dragOver && (
+            <div className="profile-drop-overlay">
+              <Upload size={28} strokeWidth={1.5} />
+              <span>松开以上传头像</span>
+            </div>
+          )}
+
+          <input
+            ref={fileRef}
+            type="file"
+            accept={AVATAR_ACCEPT}
+            className="sr-only"
+            onChange={onAvatarSelect}
+          />
+          <button
+            type="button"
+            className="profile-avatar-btn"
+            title="点击或拖拽图片到此处更换头像"
+            disabled={avatarLoading}
+            onClick={() => fileRef.current?.click()}
+          >
+            <div className={`profile-avatar-lg${pendingAvatar ? ' profile-avatar-lg--pending' : ''}`}>
+              {displayAvatar
+                ? <img src={displayAvatar} alt="" />
+                : user.nickname[0]}
+              <span className="profile-avatar-overlay">
+                {avatarLoading
+                  ? <Spinner size="sm" className="text-white" />
+                  : <Camera size={22} strokeWidth={1.75} />}
+              </span>
+            </div>
+          </button>
+          <div className="profile-header-info">
+            <div className="profile-header-main">
+              <h1 className="profile-display-name">{user.nickname}</h1>
+              <div className="profile-username">@{user.username}</div>
+              <p className="profile-avatar-tip">点击头像选择图片，或拖拽到此处</p>
+              {user.role === 'admin' && <Badge variant="green" className="mt-1.5">管理员</Badge>}
+            </div>
+            {pendingAvatar && (
+              <div className="profile-avatar-actions">
+                <span className="profile-avatar-hint">已裁剪，待保存</span>
+                <Button size="sm" loading={avatarLoading} onClick={onSaveAvatar}>
+                  保存头像
+                </Button>
+                <Button
+                  size="sm"
+                  variant="ghost"
+                  disabled={avatarLoading}
+                  onClick={clearPendingAvatar}
+                  aria-label="取消"
+                >
+                  <X size={16} />
+                </Button>
+              </div>
+            )}
          </div>
        </div>

+        <AvatarCropDialog
+          open={cropOpen}
+          imageSrc={cropImageSrc}
+          fileName={cropFileName}
+          onOpenChange={closeCropDialog}
+          onConfirm={onCropConfirm}
+        />
+
        {user.role === 'admin' && (
          <div className="section-card admin-entry-card">
            <div className="section-card-title">管理员入口</div>
@@ -134,11 +295,11 @@ export default function ProfilePage() {
              管理板块、用户、帖子及系统设置
            </p>
            <div className="flex flex-wrap gap-2">
-              <Button variant="outline" onClick={() => nav('/boards')}>
+              <Button variant="outline" onClick={() => nav('/admin/boards')}>
                <Settings />
                管理板块
              </Button>
-              <Button onClick={openAdminDashboard}>
+              <Button onClick={() => nav('/admin/dashboard')}>
                <LayoutDashboard />
                进入系统后台
              </Button>
@@ -149,7 +310,7 @@ export default function ProfilePage() {
        <div className="section-card">
          <div className="section-card-title">基本资料</div>
          <Form {...nickForm}>
-            <form onSubmit={nickForm.handleSubmit(onUpdateNick)} className="space-y-4">
+            <form onSubmit={nickForm.handleSubmit(onUpdateNick)} className="profile-form">
              <FormItem>
                <FormLabel>用户名</FormLabel>
                <FormControl>
@@ -169,32 +330,20 @@ export default function ProfilePage() {
                  </FormItem>
                )}
              />
-              <Button type="submit" loading={nickLoading}>保存昵称</Button>
+              <div className="profile-form-footer">
+                <span className="profile-form-hint">
+                  支持 JPG、PNG、GIF、WebP，头像不超过 {limits.avatar_max_mb}MB
+                </span>
+                <Button type="submit" loading={nickLoading}>保存</Button>
+              </div>
            </form>
          </Form>
        </div>

-        <div className="section-card">
-          <div className="section-card-title">头像</div>
-          <p style={{ fontSize: 13, color: 'var(--color-text-3)', margin: '0 0 12px' }}>
-            支持 JPG、PNG、GIF、WebP，不超过 2MB
-          </p>
-          <input
-            ref={fileRef}
-            type="file"
-            accept="image/jpeg,image/png,image/gif,image/webp"
-            style={{ display: 'none' }}
-            onChange={onAvatarChange}
-          />
-          <Button variant="outline" loading={avatarLoading} onClick={() => fileRef.current?.click()}>
-            选择图片上传
-          </Button>
-        </div>
-
        <div className="section-card">
          <div className="section-card-title">修改密码</div>
          <Form {...pwdForm}>
-            <form onSubmit={pwdForm.handleSubmit(onUpdatePwd)} className="space-y-4">
+            <form onSubmit={pwdForm.handleSubmit(onUpdatePwd)} className="profile-form">
              <FormField
                control={pwdForm.control}
                name="old_password"
@@ -234,9 +383,11 @@ export default function ProfilePage() {
                  </FormItem>
                )}
              />
-              <Button type="submit" variant="destructive" loading={pwdLoading}>
-                修改密码
-              </Button>
+              <div className="profile-form-footer profile-form-footer--end">
+                <Button type="submit" variant="destructive" loading={pwdLoading}>
+                  修改密码
+                </Button>
+              </div>
            </form>
          </Form>
        </div>
--- a/frontend/src/pages/RegisterPage.tsx
+++ b/frontend/src/pages/RegisterPage.tsx
@@ -8,22 +8,24 @@ import { Input } from '@/components/ui/input';
 import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '@/components/ui/form';
 import { notify } from '@/lib/notify';
 import { api } from '../api/client';
+import { useForumLimits } from '../hooks/useForumLimits';
 import { useAuth } from '../hooks/useAuth';

-const schema = z.object({
+const schema = (minLen: number) => z.object({
  username: z.string().min(1, '请输入用户名'),
  nickname: z.string().optional(),
-  password: z.string().min(6, '密码至少 6 位'),
+  password: z.string().min(minLen, `密码至少 ${minLen} 位`),
 });

-type FormValues = z.infer<typeof schema>;
+type FormValues = z.infer<ReturnType<typeof schema>>;

 export default function RegisterPage() {
+  const { limits } = useForumLimits();
  const nav = useNavigate();
  const { refresh } = useAuth();
  const [loading, setLoading] = useState(false);
  const form = useForm<FormValues>({
-    resolver: zodResolver(schema),
+    resolver: zodResolver(schema(limits.password_min_len)),
    defaultValues: { username: '', nickname: '', password: '' },
  });

@@ -82,7 +84,7 @@ export default function RegisterPage() {
                <FormItem>
                  <FormLabel>密码</FormLabel>
                  <FormControl>
-                    <Input type="password" placeholder="至少 6 位" autoComplete="new-password" {...field} />
+                    <Input type="password" placeholder={`至少 ${limits.password_min_len} 位`} autoComplete="new-password" {...field} />
                  </FormControl>
                  <FormMessage />
                </FormItem>
--- a/frontend/src/pages/admin/AdminCommentsPage.tsx
+++ b/frontend/src/pages/admin/AdminCommentsPage.tsx
@@ -0,0 +1,125 @@
+import { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Button } from '@/components/ui/button';
+import { Badge } from '@/components/ui/badge';
+import { Spinner } from '@/components/ui/spinner';
+import {
+  AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent,
+  AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle,
+  AlertDialogTrigger,
+} from '@/components/ui/alert-dialog';
+import { notify } from '@/lib/notify';
+import { api } from '../../api/client';
+import { useAdminGuard } from '../../layouts/AdminLayout';
+import type { Comment } from '../../api/types';
+
+export default function AdminCommentsPage() {
+  const nav = useNavigate();
+  const { ready } = useAdminGuard();
+  const [comments, setComments] = useState<Comment[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [page, setPage] = useState(1);
+  const [totalPages, setTotalPages] = useState(1);
+
+  const load = (p = page) => {
+    setLoading(true);
+    api.adminComments(p)
+      .then(d => {
+        setComments(d.comments ?? []);
+        setPage(d.page);
+        setTotalPages(d.total_pages);
+      })
+      .catch(e => notify.error(e.message))
+      .finally(() => setLoading(false));
+  };
+
+  useEffect(() => {
+    if (ready) load(1);
+  }, [ready]);
+
+  const remove = async (id: number) => {
+    try {
+      await api.adminDeleteComment(id);
+      notify.success('评论已删除');
+      load();
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '删除失败');
+    }
+  };
+
+  if (!ready) return null;
+
+  return (
+    <div className="admin-page">
+      <div className="admin-page-head">
+        <h1>评论管理</h1>
+        <p>查看与删除楼层评论</p>
+      </div>
+
+      <div className="admin-card">
+        {loading ? (
+          <div className="flex justify-center py-12"><Spinner size="lg" /></div>
+        ) : (
+          <>
+            <table className="admin-table">
+              <thead>
+                <tr>
+                  <th>ID</th>
+                  <th>楼层</th>
+                  <th>帖子</th>
+                  <th>作者</th>
+                  <th>内容</th>
+                  <th>私密</th>
+                  <th>时间</th>
+                  <th>操作</th>
+                </tr>
+              </thead>
+              <tbody>
+                {comments.map(c => (
+                  <tr key={c.id}>
+                    <td>{c.id}</td>
+                    <td>#{c.floor}</td>
+                    <td>
+                      <button type="button" className="admin-text-link" onClick={() => nav(`/post/${c.post_id}`)}>
+                        {c.post?.title ?? `#${c.post_id}`}
+                      </button>
+                    </td>
+                    <td>{c.user?.nickname || c.guest_nick || '游客'}</td>
+                    <td className="max-w-[200px] truncate">{c.content}</td>
+                    <td>{c.is_private ? <Badge variant="secondary">是</Badge> : '—'}</td>
+                    <td>{new Date(c.created_at).toLocaleString('zh-CN')}</td>
+                    <td>
+                      <AlertDialog>
+                        <AlertDialogTrigger asChild>
+                          <Button size="sm" variant="ghost" className="text-destructive">删除</Button>
+                        </AlertDialogTrigger>
+                        <AlertDialogContent>
+                          <AlertDialogHeader>
+                            <AlertDialogTitle>确定删除该评论？</AlertDialogTitle>
+                            <AlertDialogDescription>此操作不可恢复。</AlertDialogDescription>
+                          </AlertDialogHeader>
+                          <AlertDialogFooter>
+                            <AlertDialogCancel>取消</AlertDialogCancel>
+                            <AlertDialogAction onClick={() => remove(c.id)}>删除</AlertDialogAction>
+                          </AlertDialogFooter>
+                        </AlertDialogContent>
+                      </AlertDialog>
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+            {comments.length === 0 && <div className="admin-empty">暂无评论</div>}
+            {totalPages > 1 && (
+              <div className="admin-pagination">
+                <Button size="sm" variant="outline" disabled={page <= 1} onClick={() => load(page - 1)}>上一页</Button>
+                <span>第 {page} / {totalPages} 页</span>
+                <Button size="sm" variant="outline" disabled={page >= totalPages} onClick={() => load(page + 1)}>下一页</Button>
+              </div>
+            )}
+          </>
+        )}
+      </div>
+    </div>
+  );
+}
--- a/frontend/src/pages/admin/AdminDashboardPage.tsx
+++ b/frontend/src/pages/admin/AdminDashboardPage.tsx
@@ -0,0 +1,88 @@
+import { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Spinner } from '@/components/ui/spinner';
+import { Badge } from '@/components/ui/badge';
+import { api } from '../../api/client';
+import { useAdminGuard } from '../../layouts/AdminLayout';
+import type { AdminDashboard } from '../../api/types';
+
+export default function AdminDashboardPage() {
+  const nav = useNavigate();
+  const { ready } = useAdminGuard();
+  const [data, setData] = useState<AdminDashboard | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    if (!ready) return;
+    api.adminDashboard()
+      .then(setData)
+      .finally(() => setLoading(false));
+  }, [ready]);
+
+  if (!ready || loading) {
+    return <div className="flex justify-center py-16"><Spinner size="lg" /></div>;
+  }
+  if (!data) return null;
+
+  const stats = [
+    { label: '注册用户', value: data.users, cls: 'admin-stat-users' },
+    { label: '帖子总数', value: data.posts, cls: 'admin-stat-posts' },
+    { label: '板块数量', value: data.boards, cls: 'admin-stat-boards' },
+    { label: '评论总数', value: data.comments, cls: 'admin-stat-comments' },
+    { label: '当前在线', value: data.online, cls: 'admin-stat-online' },
+  ];
+
+  return (
+    <div className="admin-page">
+      <div className="admin-page-head">
+        <h1>仪表盘</h1>
+        <p>论坛运行概览与最新帖子</p>
+      </div>
+
+      <div className="admin-stat-grid">
+        {stats.map(s => (
+          <div key={s.label} className={`admin-stat-card ${s.cls}`}>
+            <div className="admin-stat-value">{s.value}</div>
+            <div className="admin-stat-label">{s.label}</div>
+          </div>
+        ))}
+      </div>
+
+      <div className="admin-card">
+        <div className="admin-card-head">
+          <span>最新帖子</span>
+          <button type="button" className="admin-text-link" onClick={() => nav('/admin/posts')}>
+            查看全部 →
+          </button>
+        </div>
+        <table className="admin-table">
+          <thead>
+            <tr>
+              <th>ID</th>
+              <th>标题</th>
+              <th>作者</th>
+              <th>置顶</th>
+              <th>时间</th>
+            </tr>
+          </thead>
+          <tbody>
+            {data.recent_posts.map(p => (
+              <tr key={p.id}>
+                <td>{p.id}</td>
+                <td>
+                  <button type="button" className="admin-text-link" onClick={() => nav(`/post/${p.id}`)}>
+                    {p.title}
+                  </button>
+                </td>
+                <td>{p.user?.nickname ?? '—'}</td>
+                <td>{p.pinned ? <Badge variant="orange">是</Badge> : '—'}</td>
+                <td>{new Date(p.created_at).toLocaleString('zh-CN')}</td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+        {data.recent_posts.length === 0 && <div className="admin-empty">暂无帖子</div>}
+      </div>
+    </div>
+  );
+}
--- a/frontend/src/pages/admin/AdminPostsPage.tsx
+++ b/frontend/src/pages/admin/AdminPostsPage.tsx
@@ -0,0 +1,206 @@
+import { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Search, Lock, LockOpen } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Badge } from '@/components/ui/badge';
+import { Spinner } from '@/components/ui/spinner';
+import {
+  AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent,
+  AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle,
+  AlertDialogTrigger,
+} from '@/components/ui/alert-dialog';
+import { notify } from '@/lib/notify';
+import { api } from '../../api/client';
+import { useAdminGuard } from '../../layouts/AdminLayout';
+import type { PostItem } from '../../api/types';
+import { clearAllFeedCache } from '../../utils/feedCache';
+import { isTimeDiffSignificant } from '../../utils/content';
+
+function formatAdminTime(iso: string) {
+  const d = new Date(iso);
+  if (Number.isNaN(d.getTime())) return iso;
+  return d.toLocaleString('zh-CN', {
+    year: 'numeric', month: '2-digit', day: '2-digit',
+    hour: '2-digit', minute: '2-digit',
+  });
+}
+
+export default function AdminPostsPage() {
+  const nav = useNavigate();
+  const { ready } = useAdminGuard();
+  const [posts, setPosts] = useState<PostItem[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [page, setPage] = useState(1);
+  const [totalPages, setTotalPages] = useState(1);
+  const [keyword, setKeyword] = useState('');
+  const [search, setSearch] = useState('');
+
+  const load = (p = page, kw = search) => {
+    setLoading(true);
+    api.adminPosts({ page: p, keyword: kw })
+      .then(d => {
+        setPosts(d.posts ?? []);
+        setPage(d.page);
+        setTotalPages(d.total_pages);
+      })
+      .catch(e => notify.error(e.message))
+      .finally(() => setLoading(false));
+  };
+
+  useEffect(() => {
+    if (ready) load(1, search);
+  }, [ready, search]);
+
+  const togglePin = async (post: PostItem) => {
+    try {
+      const r = await api.adminPinPost(post.id, !post.pinned);
+      clearAllFeedCache();
+      window.dispatchEvent(new Event('posts-refresh'));
+      notify.success(r.message);
+      load();
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '操作失败');
+    }
+  };
+
+  const toggleLock = async (post: PostItem) => {
+    try {
+      const r = await api.adminLockPost(post.id, !post.edit_locked);
+      notify.success(r.message);
+      load();
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '操作失败');
+    }
+  };
+
+  const remove = async (id: number) => {
+    try {
+      await api.adminDeletePost(id);
+      notify.success('帖子已删除');
+      load();
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '删除失败');
+    }
+  };
+
+  if (!ready) return null;
+
+  return (
+    <div className="admin-page">
+      <div className="admin-page-head">
+        <h1>帖子管理</h1>
+        <p>置顶、锁定编辑、删除帖子；支持按标题、标签或正文关键词搜索</p>
+      </div>
+
+      <form
+        className="admin-search-bar"
+        onSubmit={e => { e.preventDefault(); setSearch(keyword.trim()); }}
+      >
+        <Input
+          value={keyword}
+          onChange={e => setKeyword(e.target.value)}
+          placeholder="搜索标题、标签或正文…"
+        />
+        <Button type="submit"><Search size={16} />搜索</Button>
+        {search && (
+          <Button type="button" variant="outline" onClick={() => { setKeyword(''); setSearch(''); }}>
+            清除
+          </Button>
+        )}
+      </form>
+
+      <div className="admin-card">
+        {loading ? (
+          <div className="flex justify-center py-12"><Spinner size="lg" /></div>
+        ) : (
+          <>
+            <table className="admin-table">
+              <thead>
+                <tr>
+                  <th>ID</th>
+                  <th>标题</th>
+                  <th>板块</th>
+                  <th>作者</th>
+                  <th>标签</th>
+                  <th>评论</th>
+                  <th>置顶</th>
+                  <th>锁定</th>
+                  <th>点赞</th>
+                  <th>浏览</th>
+                  <th>时间</th>
+                  <th>操作</th>
+                </tr>
+              </thead>
+              <tbody>
+                {posts.map(p => {
+                  const edited = p.updated_at && isTimeDiffSignificant(p.created_at, p.updated_at);
+                  return (
+                  <tr key={p.id}>
+                    <td>{p.id}</td>
+                    <td className="max-w-[200px] truncate">
+                      <button type="button" className="admin-text-link" onClick={() => nav(`/post/${p.id}`)}>
+                        {p.title}
+                      </button>
+                      {edited && <Badge variant="secondary" className="ml-1">已编辑</Badge>}
+                    </td>
+                    <td>{p.board?.name ?? '—'}</td>
+                    <td>{p.user?.nickname ?? '—'}</td>
+                    <td className="max-w-[120px] truncate text-muted-foreground">{p.tags || '—'}</td>
+                    <td>{p.comment_count ?? 0}</td>
+                    <td>{p.pinned ? <Badge variant="orange">是</Badge> : '—'}</td>
+                    <td>{p.edit_locked ? <Badge variant="destructive">是</Badge> : '—'}</td>
+                    <td>{p.like_count}</td>
+                    <td>{p.view_count}</td>
+                    <td className="text-sm whitespace-nowrap">
+                      <span>{formatAdminTime(p.created_at)}</span>
+                      {edited && p.updated_at && (
+                        <span className="block text-muted-foreground text-xs">
+                          改于 {formatAdminTime(p.updated_at)}
+                        </span>
+                      )}
+                    </td>
+                    <td>
+                      <div className="flex gap-1">
+                        <Button size="sm" variant="outline" onClick={() => togglePin(p)}>
+                          {p.pinned ? '取消置顶' : '置顶'}
+                        </Button>
+                        <Button size="sm" variant="outline" onClick={() => toggleLock(p)}>
+                          {p.edit_locked ? <><LockOpen size={14} /> 解锁</> : <><Lock size={14} /> 锁定</>}
+                        </Button>
+                        <AlertDialog>
+                          <AlertDialogTrigger asChild>
+                            <Button size="sm" variant="ghost" className="text-destructive">删除</Button>
+                          </AlertDialogTrigger>
+                          <AlertDialogContent>
+                            <AlertDialogHeader>
+                              <AlertDialogTitle>确定删除该帖子？</AlertDialogTitle>
+                              <AlertDialogDescription>相关评论也将一并删除，不可恢复。</AlertDialogDescription>
+                            </AlertDialogHeader>
+                            <AlertDialogFooter>
+                              <AlertDialogCancel>取消</AlertDialogCancel>
+                              <AlertDialogAction onClick={() => remove(p.id)}>删除</AlertDialogAction>
+                            </AlertDialogFooter>
+                          </AlertDialogContent>
+                        </AlertDialog>
+                      </div>
+                    </td>
+                  </tr>
+                  );
+                })}
+              </tbody>
+            </table>
+            {posts.length === 0 && <div className="admin-empty">没有找到帖子</div>}
+            {totalPages > 1 && (
+              <div className="admin-pagination">
+                <Button size="sm" variant="outline" disabled={page <= 1} onClick={() => load(page - 1)}>上一页</Button>
+                <span>第 {page} / {totalPages} 页</span>
+                <Button size="sm" variant="outline" disabled={page >= totalPages} onClick={() => load(page + 1)}>下一页</Button>
+              </div>
+            )}
+          </>
+        )}
+      </div>
+    </div>
+  );
+}
--- a/frontend/src/pages/admin/AdminSettingsPage.tsx
+++ b/frontend/src/pages/admin/AdminSettingsPage.tsx
@@ -0,0 +1,326 @@
+import { useEffect, useState } from 'react';
+import { Database, Shield, Server, SlidersHorizontal } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Textarea } from '@/components/ui/textarea';
+import { Spinner } from '@/components/ui/spinner';
+import { notify } from '@/lib/notify';
+import { api } from '../../api/client';
+import { useAdminGuard } from '../../layouts/AdminLayout';
+import { invalidateForumLimitsCache } from '../../hooks/useForumLimits';
+import type { AdminSettings, ForumLimits } from '../../api/types';
+
+type TabId = 'limits' | 'filter' | 'system';
+
+type SettingRow = {
+  key: keyof ForumLimits;
+  label: string;
+  unit?: string;
+  hint?: string;
+  min?: number;
+};
+
+type SettingSection = {
+  id: string;
+  title: string;
+  summary: string;
+  rows: SettingRow[];
+};
+
+const SETTING_SECTIONS: SettingSection[] = [
+  {
+    id: 'rule',
+    title: '编辑规则',
+    summary: '控制普通用户修改自己帖子的时限',
+    rows: [
+      { key: 'post_edit_window_hours', label: '可编辑时限', unit: '小时', hint: '0 = 不限', min: 0 },
+    ],
+  },
+  {
+    id: 'rate',
+    title: '操作限流',
+    summary: '同一用户或 IP 在窗口期内的最大请求次数',
+    rows: [
+      { key: 'rate_limit_window_sec', label: '限流窗口', unit: '秒', min: 10 },
+      { key: 'rate_limit_post', label: '发帖', unit: '次', min: 1 },
+      { key: 'rate_limit_comment', label: '评论', unit: '次', min: 1 },
+      { key: 'rate_limit_register', label: '注册', unit: '次', min: 1 },
+      { key: 'rate_limit_login', label: '登录', unit: '次', min: 1 },
+    ],
+  },
+  {
+    id: 'content',
+    title: '内容长度',
+    summary: '发帖与评论的字数上限，服务端强制校验',
+    rows: [
+      { key: 'post_title_max', label: '帖子标题', unit: '字', min: 1 },
+      { key: 'post_tags_max', label: '帖子标签', unit: '字', hint: '0 = 不限', min: 0 },
+      { key: 'post_content_max', label: '帖子正文', unit: '字', hint: '0 = 不限', min: 0 },
+      { key: 'comment_max', label: '评论内容', unit: '字', min: 1 },
+    ],
+  },
+  {
+    id: 'search',
+    title: '搜索与列表',
+    summary: '关键词长度与帖子列表分页',
+    rows: [
+      { key: 'search_keyword_min', label: '关键词最短', unit: '字', min: 0 },
+      { key: 'search_keyword_max', label: '关键词最长', unit: '字', min: 1 },
+      { key: 'page_size_default', label: '默认每页', unit: '条', min: 1 },
+      { key: 'page_size_max', label: '最大每页', unit: '条', min: 1 },
+      { key: 'feed_max_pages', label: '首页自动加载页数', unit: '页', hint: '超出后需手动加载', min: 1 },
+      { key: 'feed_max_items', label: '首页自动加载条数', unit: '条', hint: '与页数取先到上限', min: 1 },
+    ],
+  },
+  {
+    id: 'user',
+    title: '用户账号',
+    summary: '注册、改密与头像上传限制',
+    rows: [
+      { key: 'password_min_len', label: '密码最短', unit: '位', min: 4 },
+      { key: 'avatar_max_mb', label: '头像上限', unit: 'MB', min: 1 },
+    ],
+  },
+];
+
+const TABS: { id: TabId; label: string; icon: typeof SlidersHorizontal }[] = [
+  { id: 'limits', label: '论坛限制', icon: SlidersHorizontal },
+  { id: 'filter', label: '敏感词', icon: Shield },
+  { id: 'system', label: '系统维护', icon: Server },
+];
+
+function SettingTable({
+  sections,
+  limits,
+  onChange,
+}: {
+  sections: SettingSection[];
+  limits: ForumLimits;
+  onChange: (key: keyof ForumLimits, value: string) => void;
+}) {
+  return (
+    <div className="admin-settings-sections">
+      {sections.map(section => (
+        <section key={section.id} className="admin-settings-section" id={`settings-${section.id}`}>
+          <div className="admin-settings-section-head">
+            <h3>{section.title}</h3>
+            <p>{section.summary}</p>
+          </div>
+          <div className="admin-settings-table" role="group" aria-label={section.title}>
+            {section.rows.map(row => (
+              <div key={row.key} className="admin-settings-row">
+                <label htmlFor={`limit-${row.key}`} className="admin-settings-row-label">
+                  {row.label}
+                </label>
+                <div className="admin-settings-row-input">
+                  <Input
+                    id={`limit-${row.key}`}
+                    type="number"
+                    min={row.min ?? 0}
+                    value={limits[row.key]}
+                    onChange={e => onChange(row.key, e.target.value)}
+                    className="admin-settings-input"
+                  />
+                  {row.unit && <span className="admin-settings-unit">{row.unit}</span>}
+                </div>
+                <span className="admin-settings-row-hint">{row.hint ?? ''}</span>
+              </div>
+            ))}
+          </div>
+        </section>
+      ))}
+    </div>
+  );
+}
+
+export default function AdminSettingsPage() {
+  const { ready } = useAdminGuard();
+  const [settings, setSettings] = useState<AdminSettings | null>(null);
+  const [limits, setLimits] = useState<ForumLimits | null>(null);
+  const [filterWords, setFilterWords] = useState('');
+  const [activeTab, setActiveTab] = useState<TabId>('limits');
+  const [loading, setLoading] = useState(true);
+  const [backing, setBacking] = useState(false);
+  const [savingForum, setSavingForum] = useState(false);
+  const [savingFilter, setSavingFilter] = useState(false);
+
+  useEffect(() => {
+    if (!ready) return;
+    api.adminSettings()
+      .then(s => {
+        setSettings(s);
+        setLimits(s.limits);
+        setFilterWords(s.filter_words);
+      })
+      .finally(() => setLoading(false));
+  }, [ready]);
+
+  const handleLimitChange = (key: keyof ForumLimits, value: string) => {
+    const n = parseInt(value, 10);
+    if (Number.isNaN(n)) return;
+    setLimits(prev => prev ? { ...prev, [key]: n } : prev);
+  };
+
+  const handleSaveForumSettings = async () => {
+    if (!limits) return;
+    setSavingForum(true);
+    try {
+      const r = await api.adminUpdateForumSettings(limits);
+      notify.success(r.message);
+      invalidateForumLimitsCache();
+      setLimits(r.limits);
+      setSettings(s => s ? { ...s, limits: r.limits } : s);
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '保存失败');
+    } finally {
+      setSavingForum(false);
+    }
+  };
+
+  const handleSaveFilterWords = async () => {
+    setSavingFilter(true);
+    try {
+      const r = await api.adminUpdateFilterWords(filterWords);
+      notify.success(r.message);
+      setSettings(s => s ? { ...s, filter_words: filterWords, filter_word_count: r.word_count } : s);
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '保存失败');
+    } finally {
+      setSavingFilter(false);
+    }
+  };
+
+  const handleBackup = async () => {
+    setBacking(true);
+    try {
+      const r = await api.adminBackup();
+      notify.success(r.message);
+      window.location.href = r.download;
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '备份失败');
+    } finally {
+      setBacking(false);
+    }
+  };
+
+  if (!ready || loading) {
+    return <div className="flex justify-center py-16"><Spinner size="lg" /></div>;
+  }
+  if (!settings || !limits) return null;
+
+  return (
+    <div className="admin-settings-page">
+      <header className="admin-page-head">
+        <h1>系统设置</h1>
+        <p>管理论坛运行规则、敏感词过滤与数据维护</p>
+      </header>
+
+      <nav className="admin-settings-tabs" aria-label="设置分类">
+        {TABS.map(({ id, label, icon: Icon }) => (
+          <button
+            key={id}
+            type="button"
+            className={`admin-settings-tab${activeTab === id ? ' active' : ''}`}
+            onClick={() => setActiveTab(id)}
+            aria-selected={activeTab === id}
+          >
+            <Icon size={15} />
+            {label}
+          </button>
+        ))}
+      </nav>
+
+      {activeTab === 'limits' && (
+        <div className="admin-settings-panel">
+          <div className="admin-card admin-settings-card">
+            <div className="admin-card-head">
+              <span>论坛限制</span>
+              <span className="admin-settings-card-badge">共 {SETTING_SECTIONS.length} 组</span>
+            </div>
+            <div className="admin-card-body">
+              <SettingTable sections={SETTING_SECTIONS} limits={limits} onChange={handleLimitChange} />
+            </div>
+          </div>
+          <div className="admin-settings-bar">
+            <p>修改后请点击保存，新规则立即对全部用户生效</p>
+            <Button onClick={handleSaveForumSettings} loading={savingForum}>
+              保存论坛限制
+            </Button>
+          </div>
+        </div>
+      )}
+
+      {activeTab === 'filter' && (
+        <div className="admin-settings-panel">
+          <div className="admin-card admin-settings-card">
+            <div className="admin-card-head">
+              <span>敏感词过滤</span>
+              <span className="admin-settings-card-badge">{settings.filter_word_count} 个词条</span>
+            </div>
+            <div className="admin-card-body admin-settings-filter-body">
+              <p className="admin-settings-filter-tip">
+                每行一个词，<code>#</code> 开头为注释。保存后写入 <code>filter_words.txt</code> 并立即生效。
+              </p>
+              <Textarea
+                rows={16}
+                value={filterWords}
+                onChange={e => setFilterWords(e.target.value)}
+                className="admin-settings-filter-textarea"
+                spellCheck={false}
+                placeholder={'# 示例\n违禁词\n广告刷单'}
+              />
+            </div>
+          </div>
+          <div className="admin-settings-bar">
+            <p>敏感词会在发帖、评论、昵称等文本中自动替换为 *</p>
+            <Button onClick={handleSaveFilterWords} loading={savingFilter}>
+              保存敏感词
+            </Button>
+          </div>
+        </div>
+      )}
+
+      {activeTab === 'system' && (
+        <div className="admin-settings-panel">
+          <div className="admin-card admin-settings-card">
+            <div className="admin-card-head">运行信息</div>
+            <div className="admin-card-body">
+              <dl className="admin-settings-info">
+                <div className="admin-settings-info-row">
+                  <dt>数据目录</dt>
+                  <dd><code>{settings.data_dir}</code></dd>
+                </div>
+                <div className="admin-settings-info-row">
+                  <dt>数据库</dt>
+                  <dd><code>{settings.db_path}</code></dd>
+                </div>
+                <div className="admin-settings-info-row">
+                  <dt>敏感词文件</dt>
+                  <dd><code>{settings.filter_path}</code></dd>
+                </div>
+                <div className="admin-settings-info-row">
+                  <dt>监听端口</dt>
+                  <dd>{settings.port}</dd>
+                </div>
+              </dl>
+            </div>
+          </div>
+
+          <div className="admin-card admin-settings-card">
+            <div className="admin-card-head">数据备份</div>
+            <div className="admin-card-body admin-settings-backup-body">
+              <p>导出当前 SQLite 数据库副本，便于迁移或灾难恢复。</p>
+              <p className="admin-settings-backup-name">
+                文件名：<code>jiang13_backup_YYYYMMDD_HHMMSS.db</code>
+              </p>
+              <Button onClick={handleBackup} loading={backing}>
+                <Database size={16} />
+                立即备份并下载
+              </Button>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+}
--- a/frontend/src/pages/admin/AdminUsersPage.tsx
+++ b/frontend/src/pages/admin/AdminUsersPage.tsx
@@ -0,0 +1,110 @@
+import { useEffect, useState } from 'react';
+import { Button } from '@/components/ui/button';
+import { Badge } from '@/components/ui/badge';
+import { Spinner } from '@/components/ui/spinner';
+import { notify } from '@/lib/notify';
+import { api } from '../../api/client';
+import { useAdminGuard } from '../../layouts/AdminLayout';
+import type { User } from '../../api/types';
+
+export default function AdminUsersPage() {
+  const { ready } = useAdminGuard();
+  const [users, setUsers] = useState<User[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [page, setPage] = useState(1);
+  const [totalPages, setTotalPages] = useState(1);
+
+  const load = (p = page) => {
+    setLoading(true);
+    api.adminUsers(p)
+      .then(d => {
+        setUsers(d.users ?? []);
+        setPage(d.page);
+        setTotalPages(d.total_pages);
+      })
+      .catch(e => notify.error(e.message))
+      .finally(() => setLoading(false));
+  };
+
+  useEffect(() => {
+    if (ready) load(1);
+  }, [ready]);
+
+  const toggleBan = async (user: User) => {
+    if (user.role === 'admin') {
+      notify.warning('不能禁言管理员');
+      return;
+    }
+    try {
+      const r = await api.adminBanUser(user.id, !user.banned);
+      notify.success(r.message);
+      load();
+    } catch (e: unknown) {
+      notify.error(e instanceof Error ? e.message : '操作失败');
+    }
+  };
+
+  if (!ready) return null;
+
+  return (
+    <div className="admin-page">
+      <div className="admin-page-head">
+        <h1>用户管理</h1>
+        <p>查看注册用户，禁言或解除禁言</p>
+      </div>
+
+      <div className="admin-card">
+        {loading ? (
+          <div className="flex justify-center py-12"><Spinner size="lg" /></div>
+        ) : (
+          <>
+            <table className="admin-table">
+              <thead>
+                <tr>
+                  <th>ID</th>
+                  <th>用户名</th>
+                  <th>昵称</th>
+                  <th>角色</th>
+                  <th>状态</th>
+                  <th>注册时间</th>
+                  <th>操作</th>
+                </tr>
+              </thead>
+              <tbody>
+                {users.map(u => (
+                  <tr key={u.id}>
+                    <td>{u.id}</td>
+                    <td>{u.username}</td>
+                    <td>{u.nickname}</td>
+                    <td>
+                      {u.role === 'admin'
+                        ? <Badge variant="orange">管理员</Badge>
+                        : <Badge variant="secondary">用户</Badge>}
+                    </td>
+                    <td>{u.banned ? <Badge variant="destructive">已禁言</Badge> : '正常'}</td>
+                    <td>{u.created_at ? new Date(u.created_at).toLocaleString('zh-CN') : '—'}</td>
+                    <td>
+                      {u.role !== 'admin' && (
+                        <Button size="sm" variant="outline" onClick={() => toggleBan(u)}>
+                          {u.banned ? '解除禁言' : '禁言'}
+                        </Button>
+                      )}
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+            {users.length === 0 && <div className="admin-empty">暂无用户</div>}
+            {totalPages > 1 && (
+              <div className="admin-pagination">
+                <Button size="sm" variant="outline" disabled={page <= 1} onClick={() => load(page - 1)}>上一页</Button>
+                <span>第 {page} / {totalPages} 页</span>
+                <Button size="sm" variant="outline" disabled={page >= totalPages} onClick={() => load(page + 1)}>下一页</Button>
+              </div>
+            )}
+          </>
+        )}
+      </div>
+    </div>
+  );
+}
--- a/frontend/src/styles/global.css
+++ b/frontend/src/styles/global.css
--- a/frontend/src/utils/admin.ts
+++ b/frontend/src/utils/admin.ts
@@ -1,7 +1,6 @@
-/** 服务端管理后台地址（非 SPA 路由） */
+/** 管理后台入口（React SPA 内路由） */
 export const ADMIN_DASHBOARD_URL = '/admin/dashboard';

-/** 跳转到系统管理后台 */
 export function openAdminDashboard() {
  window.location.href = ADMIN_DASHBOARD_URL;
 }
--- a/frontend/src/utils/avatarCrop.ts
+++ b/frontend/src/utils/avatarCrop.ts
@@ -0,0 +1,66 @@
+import type { Area } from 'react-easy-crop';
+
+export const AVATAR_ACCEPT = 'image/jpeg,image/png,image/gif,image/webp';
+export const AVATAR_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'];
+
+/** 头像输出尺寸 */
+export const AVATAR_OUTPUT_SIZE = 512;
+
+function loadImage(src: string): Promise<HTMLImageElement> {
+  return new Promise((resolve, reject) => {
+    const img = new Image();
+    img.onload = () => resolve(img);
+    img.onerror = () => reject(new Error('图片加载失败'));
+    img.src = src;
+  });
+}
+
+/** 校验头像文件，返回错误信息或 null */
+export function validateAvatarFile(file: File, maxMb: number): string | null {
+  if (!AVATAR_MIME_TYPES.includes(file.type)) {
+    return '仅支持 JPG、PNG、GIF、WebP 格式';
+  }
+  if (file.size > maxMb * 1024 * 1024) {
+    return `头像不能超过 ${maxMb}MB`;
+  }
+  return null;
+}
+
+/** 将裁剪区域渲染为 JPEG 文件 */
+export async function getCroppedAvatarFile(
+  imageSrc: string,
+  pixelCrop: Area,
+  originalName = 'avatar.jpg',
+): Promise<File> {
+  const image = await loadImage(imageSrc);
+  const canvas = document.createElement('canvas');
+  const size = AVATAR_OUTPUT_SIZE;
+  canvas.width = size;
+  canvas.height = size;
+
+  const ctx = canvas.getContext('2d');
+  if (!ctx) throw new Error('裁剪失败');
+
+  ctx.drawImage(
+    image,
+    pixelCrop.x,
+    pixelCrop.y,
+    pixelCrop.width,
+    pixelCrop.height,
+    0,
+    0,
+    size,
+    size,
+  );
+
+  const blob = await new Promise<Blob>((resolve, reject) => {
+    canvas.toBlob(
+      b => (b ? resolve(b) : reject(new Error('裁剪失败'))),
+      'image/jpeg',
+      0.92,
+    );
+  });
+
+  const baseName = originalName.replace(/\.[^.]+$/, '') || 'avatar';
+  return new File([blob], `${baseName}.jpg`, { type: 'image/jpeg' });
+}
--- a/frontend/src/utils/boardTheme.ts
+++ b/frontend/src/utils/boardTheme.ts
@@ -0,0 +1,71 @@
+import {
+  Code2, Coffee, HelpCircle, MessageSquare, Lightbulb,
+  BookOpen, Gamepad2, Palette, Music, Camera, Heart, Zap,
+  Globe, Users, Briefcase, GraduationCap, ShoppingBag, MapPin,
+  Megaphone, Flame, Star, Folder, Wrench, Cpu, type LucideIcon,
+} from 'lucide-react';
+import type { Board } from '../api/types';
+
+/** 板块主题色槽位数（与 global.css 中 board-badge--N 对应） */
+export const BOARD_PALETTE_SIZE = 8;
+
+/** 可选板块图标（key 须与后端 AllowedBoardIcons 一致） */
+export const BOARD_ICON_OPTIONS: { key: string; label: string; Icon: LucideIcon }[] = [
+  { key: 'code-2', label: '代码', Icon: Code2 },
+  { key: 'coffee', label: '咖啡', Icon: Coffee },
+  { key: 'help-circle', label: '问答', Icon: HelpCircle },
+  { key: 'message-square', label: '讨论', Icon: MessageSquare },
+  { key: 'lightbulb', label: '灵感', Icon: Lightbulb },
+  { key: 'book-open', label: '阅读', Icon: BookOpen },
+  { key: 'gamepad-2', label: '游戏', Icon: Gamepad2 },
+  { key: 'palette', label: '设计', Icon: Palette },
+  { key: 'music', label: '音乐', Icon: Music },
+  { key: 'camera', label: '摄影', Icon: Camera },
+  { key: 'heart', label: '生活', Icon: Heart },
+  { key: 'zap', label: '快讯', Icon: Zap },
+  { key: 'globe', label: '综合', Icon: Globe },
+  { key: 'users', label: '社区', Icon: Users },
+  { key: 'briefcase', label: '职场', Icon: Briefcase },
+  { key: 'graduation-cap', label: '学习', Icon: GraduationCap },
+  { key: 'shopping-bag', label: '交易', Icon: ShoppingBag },
+  { key: 'map-pin', label: '本地', Icon: MapPin },
+  { key: 'megaphone', label: '公告', Icon: Megaphone },
+  { key: 'flame', label: '热门', Icon: Flame },
+  { key: 'star', label: '精华', Icon: Star },
+  { key: 'folder', label: '资源', Icon: Folder },
+  { key: 'wrench', label: '工具', Icon: Wrench },
+  { key: 'cpu', label: '硬件', Icon: Cpu },
+];
+
+const ICON_MAP = Object.fromEntries(
+  BOARD_ICON_OPTIONS.map(o => [o.key, o.Icon]),
+) as Record<string, LucideIcon>;
+
+const DEFAULT_ICONS: LucideIcon[] = [
+  Code2, Coffee, HelpCircle, MessageSquare,
+  Lightbulb, BookOpen, Gamepad2, Palette,
+];
+
+export type BoardVisual = Pick<Board, 'id' | 'icon' | 'color_index'>;
+
+/** 按板块 id / color_index 取稳定色槽索引 */
+export function getBoardThemeIndex(board: BoardVisual | number): number {
+  if (typeof board === 'object' && board.color_index != null && board.color_index >= 0) {
+    return board.color_index % BOARD_PALETTE_SIZE;
+  }
+  const id = typeof board === 'number' ? board : board.id;
+  return ((id % BOARD_PALETTE_SIZE) + BOARD_PALETTE_SIZE) % BOARD_PALETTE_SIZE;
+}
+
+/** 解析板块图标：优先使用后台配置，否则按 id 回退 */
+export function getBoardIcon(board: BoardVisual | number): LucideIcon {
+  if (typeof board === 'object' && board.icon && ICON_MAP[board.icon]) {
+    return ICON_MAP[board.icon];
+  }
+  return DEFAULT_ICONS[getBoardThemeIndex(board)];
+}
+
+export function getBoardIconOption(key: string | undefined) {
+  if (!key) return undefined;
+  return BOARD_ICON_OPTIONS.find(o => o.key === key);
+}
--- a/frontend/src/utils/content.ts
+++ b/frontend/src/utils/content.ts
@@ -1,20 +1,62 @@
-/** @用户名 高亮（仅用于评论正文中用户主动输入的 @） */
-export function highlightMentions(text: string, _onClick?: (name: string) => void): string {
+/** 转义 HTML 并保留换行 */
+function escapeWithBreaks(text: string): string {
  return text
+    .replace(/\r\n/g, '\n')
+    .replace(/\r/g, '\n')
    .replace(/&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
-    // innerHTML 解析会吞掉换行，需转为 <br>
-    .replace(/\n/g, '<br>')
+    .replace(/\n/g, '<br>');
+}
+
+/** @用户名 高亮（仅用于评论正文中用户主动输入的 @） */
+export function highlightMentions(text: string, _onClick?: (name: string) => void): string {
+  return escapeWithBreaks(text)
    .replace(/@([\w\u4e00-\u9fa5_-]+)/g, '<span class="mention">@$1</span>');
 }

 export function formatTime(iso: string) {
  const d = new Date(iso);
+  if (Number.isNaN(d.getTime())) return iso;
+
  const now = new Date();
  const diff = (now.getTime() - d.getTime()) / 1000;
  if (diff < 60) return '刚刚';
  if (diff < 3600) return `${Math.floor(diff / 60)}分钟前`;
  if (diff < 86400) return `${Math.floor(diff / 3600)}小时前`;
-  return `${d.getMonth() + 1}-${d.getDate()} ${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`;
+
+  const pad = (n: number) => String(n).padStart(2, '0');
+  const clock = `${pad(d.getHours())}:${pad(d.getMinutes())}`;
+
+  const yesterday = new Date(now);
+  yesterday.setDate(yesterday.getDate() - 1);
+  if (
+    d.getFullYear() === yesterday.getFullYear()
+    && d.getMonth() === yesterday.getMonth()
+    && d.getDate() === yesterday.getDate()
+  ) {
+    return `昨天 ${clock}`;
+  }
+
+  if (d.getFullYear() === now.getFullYear()) {
+    return `${d.getMonth() + 1}月${d.getDate()}日 ${clock}`;
+  }
+
+  return `${d.getFullYear()}年${d.getMonth() + 1}月${d.getDate()}日 ${clock}`;
+}
+
+/** 完整日期时间（用于帖子发布/修改时间展示） */
+export function formatDateTime(iso: string) {
+  const d = new Date(iso);
+  if (Number.isNaN(d.getTime())) return iso;
+  const pad = (n: number) => String(n).padStart(2, '0');
+  return `${d.getFullYear()}年${d.getMonth() + 1}月${d.getDate()}日 ${pad(d.getHours())}:${pad(d.getMinutes())}`;
+}
+
+/** 判断两个 ISO 时间是否相差超过 1 分钟 */
+export function isTimeDiffSignificant(a: string, b: string) {
+  const da = new Date(a).getTime();
+  const db = new Date(b).getTime();
+  if (Number.isNaN(da) || Number.isNaN(db)) return false;
+  return Math.abs(da - db) > 60_000;
 }
--- a/frontend/src/utils/feedCache.ts
+++ b/frontend/src/utils/feedCache.ts
@@ -0,0 +1,123 @@
+import type { NavigateFunction } from 'react-router-dom';
+import type { PostItem } from '../api/types';
+import type { FeedSort } from '../components/FeedSortBar';
+
+/** 导航到帖子列表时附带的状态，用于同 URL 重复点击时强制刷新 */
+export type FeedNavState = { refreshFeed?: boolean };
+
+
+
+export type FeedCache = {
+
+  posts: PostItem[];
+
+  postTotal: number;
+
+  page: number;
+
+  hasMore: boolean;
+
+  scrollTop: number;
+
+};
+
+
+
+const PREFIX = 'j13-feed-cache:';
+
+
+
+function cacheKey(boardId: number, keyword: string, sort: FeedSort) {
+
+  return `${PREFIX}${boardId}:${keyword}:${sort}`;
+
+}
+
+
+
+/** 读取帖子列表缓存，用于从详情页返回时恢复浏览位置 */
+
+export function getFeedCache(boardId: number, keyword: string, sort: FeedSort): FeedCache | null {
+
+  try {
+
+    const raw = sessionStorage.getItem(cacheKey(boardId, keyword, sort));
+
+    return raw ? (JSON.parse(raw) as FeedCache) : null;
+
+  } catch {
+
+    return null;
+
+  }
+
+}
+
+
+
+/** 保存帖子列表缓存 */
+
+export function setFeedCache(boardId: number, keyword: string, sort: FeedSort, data: FeedCache) {
+
+  try {
+
+    sessionStorage.setItem(cacheKey(boardId, keyword, sort), JSON.stringify(data));
+
+  } catch {
+
+    // sessionStorage 不可用时忽略
+
+  }
+
+}
+
+
+
+/** 清除指定筛选条件下的列表缓存 */
+
+export function clearFeedCache(boardId: number, keyword: string, sort: FeedSort) {
+
+  try {
+
+    sessionStorage.removeItem(cacheKey(boardId, keyword, sort));
+
+  } catch {
+
+    // ignore
+
+  }
+
+}
+
+
+
+/** 清除所有帖子列表缓存（置顶等操作后列表需全量刷新） */
+export function clearAllFeedCache() {
+
+  try {
+
+    for (let i = sessionStorage.length - 1; i >= 0; i--) {
+
+      const key = sessionStorage.key(i);
+
+      if (key?.startsWith(PREFIX)) sessionStorage.removeItem(key);
+
+    }
+
+  } catch {
+
+    // ignore
+
+  }
+
+}
+
+/** 主动刷新帖子列表时派发，用于同页内立即回到顶部 */
+export const FEED_RESET_EVENT = 'feed-reset';
+
+/** 清除缓存并导航到帖子列表（重复点击同一入口时也会刷新） */
+export function navigateFeed(nav: NavigateFunction, url: string) {
+  clearAllFeedCache();
+  window.dispatchEvent(new Event(FEED_RESET_EVENT));
+  nav(url, { state: { refreshFeed: true } satisfies FeedNavState });
+}
--- a/frontend/src/utils/markdown.ts
+++ b/frontend/src/utils/markdown.ts
@@ -1,130 +0,0 @@
-import { marked } from 'marked';
-import DOMPurify from 'dompurify';
-import { POST_CONTENT_PURIFY_CONFIG } from './postContent';
-
-marked.setOptions({ breaks: true, gfm: true });
-
-const MEMBERS_BLOCK_RE = /:::members[ \t]*\r?\n([\s\S]*?)\r?\n[ \t]*:::/g;
-
-type MdPart = { type: 'text' | 'members'; content: string };
-
-/** 拆分普通 Markdown 与 :::members 区块 */
-function splitMembersBlocks(md: string): MdPart[] {
-  const parts: MdPart[] = [];
-  let lastIndex = 0;
-  const re = new RegExp(MEMBERS_BLOCK_RE.source, 'g');
-  let match: RegExpExecArray | null;
-
-  while ((match = re.exec(md)) !== null) {
-    if (match.index > lastIndex) {
-      parts.push({ type: 'text', content: md.slice(lastIndex, match.index) });
-    }
-    parts.push({ type: 'members', content: match[1] });
-    lastIndex = re.lastIndex;
-  }
-
-  if (lastIndex < md.length) {
-    parts.push({ type: 'text', content: md.slice(lastIndex) });
-  }
-  if (parts.length === 0) {
-    parts.push({ type: 'text', content: md });
-  }
-  return parts;
-}
-
-/** Markdown 转 HTML，用于预览与发布 */
-export function markdownToHtml(md: string): string {
-  const parts = splitMembersBlocks(md);
-  const html = parts.map(part => {
-    if (part.type === 'members') {
-      const inner = marked.parse(part.content.trim()) as string;
-      return `<members-only>${inner}</members-only>`;
-    }
-    return marked.parse(part.content) as string;
-  }).join('');
-
-  return DOMPurify.sanitize(html, POST_CONTENT_PURIFY_CONFIG);
-}
-
-/** HTML 转 Markdown，用于编辑已有帖子时回填编辑器 */
-export function htmlToMarkdown(html: string): string {
-  if (!html.trim()) return '';
-
-  const doc = new DOMParser().parseFromString(
-    DOMPurify.sanitize(html, POST_CONTENT_PURIFY_CONFIG),
-    'text/html',
-  );
-
-  const walk = (node: Node): string => {
-    if (node.nodeType === Node.TEXT_NODE) return node.textContent ?? '';
-    if (node.nodeType !== Node.ELEMENT_NODE) return '';
-
-    const el = node as HTMLElement;
-    const tag = el.tagName.toLowerCase();
-    const inner = () => Array.from(el.childNodes).map(walk).join('');
-
-    switch (tag) {
-      case 'members-only': {
-        if (el.getAttribute('data-locked') === 'true') return '';
-        const body = el.querySelector('.post-members-only__body');
-        const content = body ? Array.from(body.childNodes).map(walk).join('') : inner();
-        return `:::members\n${content.trim()}\n:::\n\n`;
-      }
-      case 'br': return '\n';
-      case 'p': return inner().trimEnd() + '\n\n';
-      case 'h1': return `# ${inner().trim()}\n\n`;
-      case 'h2': return `## ${inner().trim()}\n\n`;
-      case 'h3': return `### ${inner().trim()}\n\n`;
-      case 'h4': return `#### ${inner().trim()}\n\n`;
-      case 'h5': return `##### ${inner().trim()}\n\n`;
-      case 'h6': return `###### ${inner().trim()}\n\n`;
-      case 'strong':
-      case 'b': return `**${inner()}**`;
-      case 'em':
-      case 'i': return `*${inner()}*`;
-      case 'code': return `\`${inner()}\``;
-      case 'pre': return `\`\`\`\n${el.textContent ?? ''}\n\`\`\`\n\n`;
-      case 'a': return `[${inner()}](${el.getAttribute('href') ?? ''})`;
-      case 'img': return `![${el.getAttribute('alt') ?? ''}](${el.getAttribute('src') ?? ''})`;
-      case 'ul':
-        return Array.from(el.children)
-          .map(li => `- ${walk(li).trim()}`)
-          .join('\n') + '\n\n';
-      case 'ol':
-        return Array.from(el.children)
-          .map((li, i) => `${i + 1}. ${walk(li).trim()}`)
-          .join('\n') + '\n\n';
-      case 'li': return inner();
-      case 'blockquote': {
-        const text = inner().trim().replace(/\n/g, '\n> ');
-        return `> ${text}\n\n`;
-      }
-      case 'hr': return '---\n\n';
-      case 'div':
-        if (el.classList.contains('post-members-only__badge')
-          || el.classList.contains('post-members-only__gate')
-          || el.classList.contains('post-members-only__gate-icon')) {
-          return '';
-        }
-        if (el.classList.contains('post-members-only__body')) {
-          return inner();
-        }
-        return inner();
-      default: return inner();
-    }
-  };
-
-  return walk(doc.body).replace(/\n{3,}/g, '\n\n').trim();
-}
-
-/** 统计正文字数（不含空白） */
-export function countWords(text: string): number {
-  const t = text.trim();
-  if (!t) return 0;
-  const cjk = t.match(/[\u4e00-\u9fff]/g)?.length ?? 0;
-  const en = t.match(/[a-zA-Z0-9]+/g)?.length ?? 0;
-  return cjk + en;
-}
-
-/** 编辑器插入用的会员专属区块模板 */
-export const MEMBERS_ONLY_TEMPLATE = ':::members\n在此输入仅登录用户可见的内容…\n:::';
--- a/frontend/src/utils/markdownContent.ts
+++ b/frontend/src/utils/markdownContent.ts
@@ -0,0 +1,229 @@
+import TurndownService from 'turndown';
+import { marked } from 'marked';
+import DOMPurify from 'dompurify';
+import { POST_CONTENT_PURIFY_CONFIG } from './postContent';
+
+const MEMBERS_ONLY_BLOCK_RE = /<members-only>([\s\S]*?)<\/members-only>/gi;
+
+const TURNDOWN_OPTIONS = {
+  headingStyle: 'atx' as const,
+  codeBlockStyle: 'fenced' as const,
+  emDelimiter: '*',
+  bulletListMarker: '-',
+};
+
+/** 仅去除区块首尾空行，保留各行行首缩进 */
+function trimBlockBoundaryLines(content: string): string {
+  return content.replace(/^\n+/, '').replace(/\n+$/, '');
+}
+
+/** 不换行空格还原为普通空格，便于 Markdown 源码编辑 */
+function nbspToSpaces(text: string): string {
+  return text.replace(/\u00A0/g, ' ');
+}
+
+/** 将含 <br> 的段落拆成多个 <p>，避免聚合转换时丢失首行缩进 */
+function splitParagraphBreaks(html: string): string {
+  if (!/<br\s*\/?>/i.test(html)) return html;
+
+  const doc = new DOMParser().parseFromString(`<div data-wrap="1">${html}</div>`, 'text/html');
+  const container = doc.querySelector('[data-wrap]');
+  if (!container) return html;
+
+  [...container.querySelectorAll('p')].forEach(p => {
+    const inner = p.innerHTML;
+    if (!/<br\s*\/?>/i.test(inner)) return;
+
+    const parts = inner.split(/<br\s*\/?>/i);
+    const fragment = doc.createDocumentFragment();
+    parts.forEach((part, index) => {
+      if (part === '' && index === parts.length - 1) return;
+      const newP = doc.createElement('p');
+      newP.innerHTML = part;
+      fragment.appendChild(newP);
+    });
+    p.replaceWith(fragment);
+  });
+
+  return container.innerHTML;
+}
+
+/** 为 Turndown 注册通用正文规则（不含 members-only） */
+function addTurndownContentRules(service: TurndownService): void {
+  service.addRule('image', {
+    filter: 'img',
+    replacement: (_content, node) => {
+      const el = node as HTMLImageElement;
+      const alt = el.getAttribute('alt') ?? '';
+      const src = el.getAttribute('src') ?? '';
+      return src ? `![${alt}](${src})` : '';
+    },
+  });
+
+  service.addRule('underline', {
+    filter: ['u'],
+    replacement: (content) => `<u>${content}</u>`,
+  });
+
+  service.addRule('strikethrough', {
+    filter: ['del', 's', 'strike'],
+    replacement: (content) => `~~${content}~~`,
+  });
+
+  service.addRule('horizontalRule', {
+    filter: 'hr',
+    replacement: () => '\n\n---\n\n',
+  });
+
+  service.addRule('anchor', {
+    filter: (node) => {
+      if (node.nodeName !== 'A') return false;
+      const href = (node as HTMLAnchorElement).getAttribute('href');
+      return Boolean(href);
+    },
+    replacement: (content, node) => {
+      const el = node as HTMLAnchorElement;
+      const href = el.getAttribute('href') ?? '';
+      const title = el.getAttribute('title');
+      return title ? `[${content}](${href} "${title}")` : `[${content}](${href})`;
+    },
+  });
+}
+
+/** 子节点转 Markdown 专用，避免 members-only 规则递归 */
+const contentTurndown = new TurndownService(TURNDOWN_OPTIONS);
+addTurndownContentRules(contentTurndown);
+
+const turndown = new TurndownService(TURNDOWN_OPTIONS);
+addTurndownContentRules(turndown);
+
+/** 登录可见区块转为 Markdown：逐子节点转换，保留首行缩进 */
+turndown.addRule('membersOnly', {
+  filter: 'members-only',
+  replacement: (_content, node) => {
+    const el = node as HTMLElement;
+    const parts: string[] = [];
+
+    el.childNodes.forEach(child => {
+      if (child.nodeType === Node.TEXT_NODE) {
+        const text = (child.textContent ?? '').trim();
+        if (text) parts.push(nbspToSpaces(text));
+        return;
+      }
+      if (child instanceof HTMLElement) {
+        parts.push(nbspToSpaces(contentTurndown.turndown(child.outerHTML).trim()));
+      }
+    });
+
+    const body = trimBlockBoundaryLines(parts.join('\n\n'));
+    return `\n\n<members-only>\n\n${body}\n\n</members-only>\n\n`;
+  },
+});
+
+marked.setOptions({
+  gfm: true,
+  breaks: true,
+});
+
+/** 禁用缩进代码块，Tab/空格缩进仅作正文排版；围栏 ``` 代码块不受影响 */
+marked.use({
+  tokenizer: {
+    code() {
+      return undefined;
+    },
+  },
+});
+
+/** 净化并保留 members-only 标签 */
+function sanitizeContentHtml(html: string): string {
+  return DOMPurify.sanitize(html, POST_CONTENT_PURIFY_CONFIG);
+}
+
+/** 将行首空格转为不换行空格，避免 HTML 折叠缩进；跳过围栏代码块 */
+function preserveLeadingIndent(markdown: string): string {
+  return markdown.split(/(```[\s\S]*?```)/g).map((part, index) => {
+    if (index % 2 === 1) return part;
+    return part.replace(/^( +)(?=\S)/gm, (_match, spaces: string) => '\u00A0'.repeat(spaces.length));
+  }).join('');
+}
+
+/** 将普通 Markdown 片段转为 HTML */
+function parseMarkdownFragment(markdown: string): string {
+  if (!markdown.trim()) return '';
+  return marked.parse(preserveLeadingIndent(markdown), { async: false }) as string;
+}
+
+/** 转换前清理编辑态装饰结构，避免污染 Markdown */
+function prepareHtmlForMarkdown(html: string): string {
+  const doc = new DOMParser().parseFromString(sanitizeContentHtml(html), 'text/html');
+
+  doc.querySelectorAll('.post-members-only__badge, .post-members-only__exit-btn, .post-members-only__unwrap-btn').forEach(el => {
+    el.remove();
+  });
+
+  doc.querySelectorAll('members-only').forEach(el => {
+    const body = el.querySelector('.post-members-only__body');
+    const raw = body ? body.innerHTML : el.innerHTML;
+    el.innerHTML = splitParagraphBreaks(raw);
+  });
+
+  return doc.body.innerHTML;
+}
+
+/** 规范化 members-only 标签边界，避免闭合标签与正文粘连 */
+function normalizeMembersOnlyMarkdown(markdown: string): string {
+  return markdown
+    .replace(/<\/members-only>(?=[^\s\n])/g, '</members-only>\n\n')
+    .replace(/<members-only>\s*<\/members-only>/g, '<members-only>\n\n</members-only>');
+}
+
+/** 列表标记后统一为单个空格（Turndown 默认会输出两个及以上空格） */
+function normalizeListMarkerSpacing(markdown: string): string {
+  return markdown
+    .replace(/^(\s*[-+*])\s+(?=\S)/gm, '$1 ')
+    .replace(/^(\s*\d+\.)\s+(?=\S)/gm, '$1 ');
+}
+
+/** 编辑器 HTML 转为 Markdown 源码 */
+export function htmlToMarkdown(html: string): string {
+  if (!html.trim()) return '';
+  const prepared = prepareHtmlForMarkdown(html);
+  const raw = turndown.turndown(prepared).replace(/\n{3,}/g, '\n\n').trim();
+  return normalizeListMarkerSpacing(raw);
+}
+
+/**
+ * Markdown 源码转为编辑器 HTML。
+ * 先提取 members-only 块再分别解析，避免闭合标签后同行文字被吞入区块。
+ */
+export function markdownToHtml(markdown: string): string {
+  if (!markdown.trim()) return '';
+
+  const normalized = normalizeMembersOnlyMarkdown(markdown);
+  const re = new RegExp(MEMBERS_ONLY_BLOCK_RE.source, 'gi');
+  let result = '';
+  let lastIndex = 0;
+  let match: RegExpExecArray | null = re.exec(normalized);
+
+  while (match) {
+    const before = normalized.slice(lastIndex, match.index);
+    if (before.trim()) {
+      result += parseMarkdownFragment(before);
+    }
+
+    const innerMd = trimBlockBoundaryLines(match[1]);
+    const innerHtml = innerMd.trim()
+      ? splitParagraphBreaks(parseMarkdownFragment(innerMd))
+      : '';
+    result += `<members-only>${innerHtml}</members-only>`;
+    lastIndex = re.lastIndex;
+    match = re.exec(normalized);
+  }
+
+  const tail = normalized.slice(lastIndex);
+  if (tail.trim()) {
+    result += parseMarkdownFragment(tail);
+  }
+
+  return sanitizeContentHtml(result);
+}
--- a/frontend/src/utils/markdownFormat.ts
+++ b/frontend/src/utils/markdownFormat.ts
@@ -0,0 +1,109 @@
+import { applyTextareaChange } from './markdownIndent';
+
+type ChangeHandler = (value: string) => void;
+
+/** 在选区两侧包裹 Markdown 标记 */
+export function wrapMarkdownSelection(
+  textarea: HTMLTextAreaElement,
+  value: string,
+  prefix: string,
+  suffix: string,
+  placeholder: string,
+  onChange: ChangeHandler,
+) {
+  const { selectionStart, selectionEnd } = textarea;
+  const selected = value.slice(selectionStart, selectionEnd);
+  const text = selected || placeholder;
+  const insert = prefix + text + suffix;
+  const next = value.slice(0, selectionStart) + insert + value.slice(selectionEnd);
+  const newStart = selectionStart + prefix.length;
+  const newEnd = newStart + text.length;
+  applyTextareaChange(textarea, next, newStart, newEnd, onChange);
+}
+
+/** 为当前行或选区行添加前缀（如引用） */
+export function prefixMarkdownLines(
+  textarea: HTMLTextAreaElement,
+  value: string,
+  prefix: string,
+  onChange: ChangeHandler,
+) {
+  const { selectionStart, selectionEnd } = textarea;
+  const lineStart = value.lastIndexOf('\n', selectionStart - 1) + 1;
+  const nextNewline = value.indexOf('\n', selectionEnd);
+  const lineEnd = nextNewline === -1 ? value.length : nextNewline;
+  const block = value.slice(lineStart, lineEnd);
+  const lines = block.split('\n').map(line => `${prefix}${line}`);
+  const next = value.slice(0, lineStart) + lines.join('\n') + value.slice(lineEnd);
+  applyTextareaChange(
+    textarea,
+    next,
+    selectionStart + prefix.length,
+    selectionEnd + prefix.length * lines.length,
+    onChange,
+  );
+}
+
+/** 切换当前行标题级别（源码模式） */
+export function cycleMarkdownHeading(
+  textarea: HTMLTextAreaElement,
+  value: string,
+  onChange: ChangeHandler,
+) {
+  const { selectionStart } = textarea;
+  const lineStart = value.lastIndexOf('\n', selectionStart - 1) + 1;
+  const lineEnd = value.indexOf('\n', selectionStart);
+  const end = lineEnd === -1 ? value.length : lineEnd;
+  const line = value.slice(lineStart, end);
+  const match = line.match(/^(#{2,6})\s+(.*)$/);
+  let nextLine: string;
+  if (!match) {
+    nextLine = `## ${line}`;
+  } else {
+    const level = match[1].length;
+    const body = match[2];
+    nextLine = level >= 6 ? body : `${'#'.repeat(level + 1)} ${body}`;
+  }
+  const next = value.slice(0, lineStart) + nextLine + value.slice(end);
+  const offset = nextLine.length - line.length;
+  applyTextareaChange(
+    textarea,
+    next,
+    selectionStart + Math.max(0, offset),
+    selectionStart + Math.max(0, offset),
+    onChange,
+  );
+}
+
+/** 插入登录可见区块模板 */
+export function insertMarkdownMembersOnly(
+  textarea: HTMLTextAreaElement,
+  value: string,
+  onChange: ChangeHandler,
+) {
+  const { selectionStart, selectionEnd } = textarea;
+  const snippet = '\n\n<members-only>\n\n\n</members-only>\n\n';
+  const next = value.slice(0, selectionStart) + snippet + value.slice(selectionEnd);
+  const cursor = selectionStart + '\n\n<members-only>\n\n'.length;
+  applyTextareaChange(textarea, next, cursor, cursor, onChange);
+}
+
+/** 在光标处插入链接 Markdown */
+export function insertMarkdownLink(
+  textarea: HTMLTextAreaElement,
+  value: string,
+  url: string,
+  onChange: ChangeHandler,
+) {
+  const { selectionStart, selectionEnd } = textarea;
+  const selected = value.slice(selectionStart, selectionEnd) || '链接文字';
+  const insert = `[${selected}](${url})`;
+  const next = value.slice(0, selectionStart) + insert + value.slice(selectionEnd);
+  applyTextareaChange(
+    textarea,
+    next,
+    selectionStart + insert.length,
+    selectionStart + insert.length,
+    onChange,
+  );
+}
--- a/frontend/src/utils/markdownIndent.ts
+++ b/frontend/src/utils/markdownIndent.ts
@@ -0,0 +1,149 @@
+export const TAB_SPACES = '    ';
+
+interface LineRange {
+  lineStart: number;
+  lineEnd: number;
+}
+
+/** 获取选区覆盖的整行文本范围 */
+function getLineRange(value: string, start: number, end: number): LineRange {
+  const lineStart = value.lastIndexOf('\n', start - 1) + 1;
+  const nextNewline = value.indexOf('\n', end);
+  const lineEnd = nextNewline === -1 ? value.length : nextNewline;
+  return { lineStart, lineEnd };
+}
+
+/** 多行整体增加一级缩进 */
+function indentBlock(value: string, lineStart: number, lineEnd: number): string {
+  const block = value.slice(lineStart, lineEnd);
+  const indented = block.split('\n').map(line => TAB_SPACES + line).join('\n');
+  return value.slice(0, lineStart) + indented + value.slice(lineEnd);
+}
+
+/** 多行整体减少一级缩进，返回新文本及选区偏移 */
+function outdentBlock(
+  value: string,
+  lineStart: number,
+  lineEnd: number,
+  selectionStart: number,
+  selectionEnd: number,
+): { next: string; newStart: number; newEnd: number } {
+  const block = value.slice(lineStart, lineEnd);
+  const lines = block.split('\n');
+  let cursor = lineStart;
+  let newStart = selectionStart;
+  let newEnd = selectionEnd;
+
+  const outdented = lines.map(line => {
+    const match = line.match(/^ {1,4}/);
+    const removed = match ? match[0].length : 0;
+    if (removed > 0) {
+      if (selectionStart > cursor) {
+        newStart -= Math.min(removed, selectionStart - cursor);
+      }
+      if (selectionEnd > cursor) {
+        newEnd -= Math.min(removed, selectionEnd - cursor);
+      }
+    }
+    cursor += line.length + 1;
+    return line.replace(/^ {1,4}/, '');
+  }).join('\n');
+
+  return {
+    next: value.slice(0, lineStart) + outdented + value.slice(lineEnd),
+    newStart: Math.max(lineStart, newStart),
+    newEnd: Math.max(lineStart, newEnd),
+  };
+}
+
+/** 在光标处插入文本并恢复选区 */
+export function applyTextareaChange(
+  textarea: HTMLTextAreaElement,
+  nextValue: string,
+  cursorStart: number,
+  cursorEnd = cursorStart,
+  onChange: (value: string) => void,
+) {
+  onChange(nextValue);
+  requestAnimationFrame(() => {
+    textarea.selectionStart = cursorStart;
+    textarea.selectionEnd = cursorEnd;
+    textarea.focus();
+  });
+}
+
+/** 在 textarea 光标处插入文本 */
+export function insertAtCursor(
+  textarea: HTMLTextAreaElement,
+  currentValue: string,
+  insertText: string,
+  onChange: (value: string) => void,
+) {
+  const { selectionStart, selectionEnd } = textarea;
+  const next = currentValue.slice(0, selectionStart) + insertText + currentValue.slice(selectionEnd);
+  const cursor = selectionStart + insertText.length;
+  applyTextareaChange(textarea, next, cursor, cursor, onChange);
+}
+
+/** Markdown 源码 Tab / Shift+Tab 缩进 */
+export function handleMarkdownTabKey(
+  e: React.KeyboardEvent<HTMLTextAreaElement>,
+  onChange: (value: string) => void,
+) {
+  if (e.key !== 'Tab') return;
+
+  e.preventDefault();
+  const textarea = e.currentTarget;
+  const { selectionStart, selectionEnd, value } = textarea;
+  const { lineStart, lineEnd } = getLineRange(value, selectionStart, selectionEnd);
+  const hasSelection = selectionStart !== selectionEnd;
+  const block = value.slice(lineStart, lineEnd);
+  const multiLine = hasSelection && block.split('\n').length > 1;
+
+  if (e.shiftKey) {
+    if (multiLine) {
+      const { next, newStart, newEnd } = outdentBlock(value, lineStart, lineEnd, selectionStart, selectionEnd);
+      applyTextareaChange(textarea, next, newStart, newEnd, onChange);
+      return;
+    }
+
+    const lineText = value.slice(lineStart, selectionStart);
+    const trailingMatch = lineText.match(/ {1,4}$/);
+    if (trailingMatch) {
+      const removeLen = trailingMatch[0].length;
+      const next = value.slice(0, selectionStart - removeLen) + value.slice(selectionStart);
+      applyTextareaChange(textarea, next, selectionStart - removeLen, selectionEnd - removeLen, onChange);
+      return;
+    }
+
+    const leadingMatch = value.slice(lineStart, selectionStart).match(/^ {1,4}/);
+    if (leadingMatch) {
+      const removeLen = leadingMatch[0].length;
+      const next = value.slice(0, lineStart) + value.slice(lineStart + removeLen);
+      applyTextareaChange(
+        textarea,
+        next,
+        selectionStart - removeLen,
+        selectionEnd - removeLen,
+        onChange,
+      );
+    }
+    return;
+  }
+
+  if (multiLine) {
+    const next = indentBlock(value, lineStart, lineEnd);
+    const lineCount = value.slice(lineStart, lineEnd).split('\n').length;
+    applyTextareaChange(
+      textarea,
+      next,
+      selectionStart + TAB_SPACES.length,
+      selectionEnd + TAB_SPACES.length * lineCount,
+      onChange,
+    );
+    return;
+  }
+
+  const next = value.slice(0, selectionStart) + TAB_SPACES + value.slice(selectionEnd);
+  applyTextareaChange(textarea, next, selectionStart + TAB_SPACES.length, selectionStart + TAB_SPACES.length, onChange);
+}
--- a/frontend/src/utils/postContent.ts
+++ b/frontend/src/utils/postContent.ts
@@ -51,6 +51,16 @@ function buildLockedGateHtml(charLength: number): string {
 </div>`;
 }

+/** 判断 HTML 正文是否为空（忽略空段落等） */
+export function isHtmlEmpty(html: string): boolean {
+  if (!html.trim()) return true;
+  const doc = new DOMParser().parseFromString(
+    DOMPurify.sanitize(html, POST_CONTENT_PURIFY_CONFIG),
+    'text/html',
+  );
+  return (doc.body.textContent ?? '').trim().length === 0;
+}
+
 /** 根据登录状态渲染帖子正文 HTML */
 export function renderPostContentHtml(html: string, isLoggedIn: boolean): string {
  if (!html.trim()) return '';
--- a/frontend/src/utils/revisionDiff.ts
+++ b/frontend/src/utils/revisionDiff.ts
@@ -0,0 +1,77 @@
+import { diffLines, diffWords } from 'diff';
+import DOMPurify from 'dompurify';
+import { POST_CONTENT_PURIFY_CONFIG } from './postContent';
+
+export interface PostSnapshot {
+  title: string;
+  content: string;
+  tags: string;
+}
+
+export interface RevisionChangeSummary {
+  titleChanged: boolean;
+  tagsChanged: boolean;
+  contentChanged: boolean;
+  hasChanges: boolean;
+}
+
+export interface DiffPart {
+  value: string;
+  added?: boolean;
+  removed?: boolean;
+}
+
+/** 将 HTML 正文转为适合 diff 的纯文本（保留段落换行） */
+export function htmlToDiffText(html: string): string {
+  if (!html.trim()) return '';
+  const doc = new DOMParser().parseFromString(
+    DOMPurify.sanitize(html, POST_CONTENT_PURIFY_CONFIG),
+    'text/html',
+  );
+  doc.querySelectorAll('br').forEach(br => br.replaceWith('\n'));
+  const blocks = doc.querySelectorAll('p, div, li, h1, h2, h3, h4, h5, h6, blockquote, pre, members-only');
+  blocks.forEach(el => {
+    el.prepend(doc.createTextNode('\n'));
+    el.append(doc.createTextNode('\n'));
+  });
+  return (doc.body.textContent ?? '')
+    .replace(/\r\n/g, '\n')
+    .replace(/\n{3,}/g, '\n\n')
+    .trim();
+}
+
+export function summarizeChange(before: PostSnapshot, after: PostSnapshot): RevisionChangeSummary {
+  const titleChanged = before.title.trim() !== after.title.trim();
+  const tagsChanged = normalizeTags(before.tags) !== normalizeTags(after.tags);
+  const contentChanged = htmlToDiffText(before.content) !== htmlToDiffText(after.content);
+  return {
+    titleChanged,
+    tagsChanged,
+    contentChanged,
+    hasChanges: titleChanged || tagsChanged || contentChanged,
+  };
+}
+
+function normalizeTags(tags: string) {
+  return tags.split(/[,，]/).map(t => t.trim()).filter(Boolean).join(',');
+}
+
+export function diffTextLines(before: string, after: string): DiffPart[] {
+  return diffLines(before || '', after || '');
+}
+
+export function diffTextWords(before: string, after: string): DiffPart[] {
+  return diffWords(before || '', after || '');
+}
+
+/** 统计 diff 片段中的增删行数 */
+export function countLineChanges(parts: DiffPart[]) {
+  let added = 0;
+  let removed = 0;
+  for (const p of parts) {
+    const lines = p.value.split('\n').filter(l => l.length > 0);
+    if (p.added) added += lines.length;
+    else if (p.removed) removed += lines.length;
+  }
+  return { added, removed };
+}
--- a/frontend/src/utils/text.ts
+++ b/frontend/src/utils/text.ts
@@ -0,0 +1,8 @@
+/** 统计正文字数（CJK 按字、英文按词） */
+export function countWords(text: string): number {
+  const t = text.trim();
+  if (!t) return 0;
+  const cjk = t.match(/[\u4e00-\u9fff]/g)?.length ?? 0;
+  const en = t.match(/[a-zA-Z0-9]+/g)?.length ?? 0;
+  return cjk + en;
+}
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -21,7 +21,7 @@ export default defineConfig({
      output: {
        manualChunks(id) {
          if (!id.includes('node_modules')) return;
-          if (id.includes('marked') || id.includes('dompurify')) return 'markdown-vendor';
+          if (id.includes('dompurify')) return 'purify-vendor';
          if (id.includes('@tanstack/react-virtual')) return 'virtual-vendor';
          if (id.includes('@radix-ui') || id.includes('lucide-react')) return 'ui-vendor';
          if (
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/jiang13/forum
+module git.iioio.com/freefire/jiang13-forum

 go 1.26

--- a/handler/admin.go
+++ b/handler/admin.go
@@ -7,8 +7,8 @@ import (
 	"strings"

 	"github.com/gin-gonic/gin"
-	"github.com/jiang13/forum/model"
-	"github.com/jiang13/forum/service"
+	"git.iioio.com/freefire/jiang13-forum/model"
+	"git.iioio.com/freefire/jiang13-forum/service"
 )

 // --- 后台管理页面 ---
@@ -114,7 +114,8 @@ func calcTotalPages(total int64, size int) int {

 func (h *Handlers) AdminAPICreateBoard(c *gin.Context) {
 	sortOrder, _ := strconv.Atoi(c.PostForm("sort_order"))
-	board, err := h.Board.Create(c.PostForm("name"), c.PostForm("description"), sortOrder)
+	colorIndex, _ := strconv.Atoi(c.PostForm("color_index"))
+	board, err := h.Board.Create(c.PostForm("name"), c.PostForm("description"), c.PostForm("icon"), colorIndex, sortOrder)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
@@ -125,7 +126,8 @@ func (h *Handlers) AdminAPICreateBoard(c *gin.Context) {
 func (h *Handlers) AdminAPIUpdateBoard(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
 	sortOrder, _ := strconv.Atoi(c.PostForm("sort_order"))
-	if err := h.Board.Update(uint(id), c.PostForm("name"), c.PostForm("description"), sortOrder); err != nil {
+	colorIndex, _ := strconv.Atoi(c.PostForm("color_index"))
+	if err := h.Board.Update(uint(id), c.PostForm("name"), c.PostForm("description"), c.PostForm("icon"), colorIndex, sortOrder); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
 	}
--- a/handler/api.go
+++ b/handler/api.go
@@ -1,12 +1,16 @@
 package handler

 import (
+	"errors"
 	"net/http"
+	"path/filepath"
 	"strconv"
+	"strings"
+	"time"

 	"github.com/gin-gonic/gin"
-	"github.com/jiang13/forum/model"
-	"github.com/jiang13/forum/service"
+	"git.iioio.com/freefire/jiang13-forum/model"
+	"git.iioio.com/freefire/jiang13-forum/service"
 )

 // APIMe 当前登录用户
@@ -50,18 +54,25 @@ func (h *Handlers) APIStats(c *gin.Context) {
 	})
 }

+// APIForumLimits 前台可见的论坛限制配置
+func (h *Handlers) APIForumLimits(c *gin.Context) {
+	c.JSON(http.StatusOK, h.Settings.PublicLimits())
+}
+
 // APIAdminCreateBoard 管理员创建板块（JSON）
 func (h *Handlers) APIAdminCreateBoard(c *gin.Context) {
 	var req struct {
 		Name        string `json:"name" binding:"required"`
 		Description string `json:"description"`
+		Icon        string `json:"icon"`
+		ColorIndex  int    `json:"color_index"`
 		SortOrder   int    `json:"sort_order"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
 		return
 	}
-	board, err := h.Board.Create(req.Name, req.Description, req.SortOrder)
+	board, err := h.Board.Create(req.Name, req.Description, req.Icon, req.ColorIndex, req.SortOrder)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
@@ -75,13 +86,15 @@ func (h *Handlers) APIAdminUpdateBoard(c *gin.Context) {
 	var req struct {
 		Name        string `json:"name" binding:"required"`
 		Description string `json:"description"`
+		Icon        string `json:"icon"`
+		ColorIndex  int    `json:"color_index"`
 		SortOrder   int    `json:"sort_order"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
 		return
 	}
-	if err := h.Board.Update(uint(id), req.Name, req.Description, req.SortOrder); err != nil {
+	if err := h.Board.Update(uint(id), req.Name, req.Description, req.Icon, req.ColorIndex, req.SortOrder); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
 	}
@@ -99,10 +112,257 @@ func (h *Handlers) APIAdminDeleteBoard(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"message": "板块已删除"})
 }

+// APIAdminDashboard 管理后台概览
+func (h *Handlers) APIAdminDashboard(c *gin.Context) {
+	var userCount, postCount, boardCount, commentCount int64
+	model.DB.Model(&model.User{}).Count(&userCount)
+	model.DB.Model(&model.Post{}).Count(&postCount)
+	model.DB.Model(&model.Board{}).Count(&boardCount)
+	model.DB.Model(&model.Comment{}).Count(&commentCount)
+	recentPosts, _, _ := h.Post.List(service.PostListQuery{Page: 1, Size: 8})
+	if recentPosts == nil {
+		recentPosts = []model.Post{}
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"users": userCount, "posts": postCount, "boards": boardCount,
+		"comments": commentCount, "online": h.Online.Count(),
+		"recent_posts": recentPosts,
+	})
+}
+
+// APIAdminPosts 管理员帖子列表
+func (h *Handlers) APIAdminPosts(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", "20"))
+	keyword := strings.TrimSpace(c.Query("keyword"))
+	posts, total, err := h.Post.ListItems(service.PostListQuery{Page: page, Size: size, Keyword: keyword})
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	if posts == nil {
+		posts = []service.PostListItem{}
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"posts": posts, "total": total, "page": page,
+		"total_pages": calcTotalPages(total, size),
+	})
+}
+
+// APIAdminLockPost 锁定/解锁帖子编辑
+func (h *Handlers) APIAdminLockPost(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	var req struct {
+		Locked bool `json:"locked"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	if err := h.Post.SetEditLocked(uint(id), req.Locked); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	msg := "已解锁编辑"
+	if req.Locked {
+		msg = "已锁定编辑"
+	}
+	c.JSON(http.StatusOK, gin.H{"message": msg, "edit_locked": req.Locked})
+}
+
+// APIAdminPinPost 置顶/取消置顶（JSON）
+func (h *Handlers) APIAdminPinPost(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	var req struct {
+		Pinned bool `json:"pinned"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	if err := h.Post.SetPinned(uint(id), req.Pinned); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	msg := "已取消置顶"
+	if req.Pinned {
+		msg = "已置顶"
+	}
+	c.JSON(http.StatusOK, gin.H{"message": msg, "pinned": req.Pinned})
+}
+
+// APIAdminDeletePost 管理员删除帖子
+func (h *Handlers) APIAdminDeletePost(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err := h.Post.Delete(0, uint(id), true); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "帖子已删除"})
+}
+
+// APIAdminComments 管理员评论列表
+func (h *Handlers) APIAdminComments(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", "20"))
+	comments, total, err := h.Comment.ListRecent(page, size)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	if comments == nil {
+		comments = []model.Comment{}
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"comments": comments, "total": total, "page": page,
+		"total_pages": calcTotalPages(total, size),
+	})
+}
+
+// APIAdminDeleteComment 管理员删除评论
+func (h *Handlers) APIAdminDeleteComment(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err := h.Comment.AdminDelete(uint(id)); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "评论已删除"})
+}
+
+// APIAdminUsers 管理员用户列表
+func (h *Handlers) APIAdminUsers(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", "20"))
+	users, total, err := h.User.ListUsers(page, size)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	if users == nil {
+		users = []model.User{}
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"users": users, "total": total, "page": page,
+		"total_pages": calcTotalPages(total, size),
+	})
+}
+
+// APIAdminBanUser 禁言/解除禁言（JSON）
+func (h *Handlers) APIAdminBanUser(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	var req struct {
+		Banned bool `json:"banned"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	if err := h.User.BanUser(uint(id), req.Banned); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	msg := "已解除禁言"
+	if req.Banned {
+		msg = "已禁言"
+	}
+	c.JSON(http.StatusOK, gin.H{"message": msg, "banned": req.Banned})
+}
+
+// APIAdminBackup 导出 SQLite 备份
+func (h *Handlers) APIAdminBackup(c *gin.Context) {
+	path, err := h.Backup.ExportSQLite()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	filename := filepath.Base(path)
+	c.JSON(http.StatusOK, gin.H{
+		"message":  "备份成功",
+		"filename": filename,
+		"download": "/api/admin/backup/download/" + filename,
+	})
+}
+
+// APIAdminDownloadBackup 下载备份文件
+func (h *Handlers) APIAdminDownloadBackup(c *gin.Context) {
+	name := c.Param("name")
+	if !strings.HasPrefix(name, "jiang13_backup_") || !strings.HasSuffix(name, ".db") {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的备份文件名"})
+		return
+	}
+	path := filepath.Join(h.Cfg.DataDir, name)
+	c.FileAttachment(path, name)
+}
+
+// APIAdminSettings 系统设置信息
+func (h *Handlers) APIAdminSettings(c *gin.Context) {
+	limits := h.Settings.Limits()
+	filterContent, _ := service.ReadFilterWordsFile(h.Cfg.FilterWordsPath())
+	c.JSON(http.StatusOK, gin.H{
+		"filter_path":  h.Cfg.FilterWordsPath(),
+		"data_dir":     h.Cfg.DataDir,
+		"db_path":      h.Cfg.DBPath(),
+		"port":         h.Cfg.Port,
+		"limits":       limits,
+		"filter_words": filterContent,
+		"filter_word_count": service.CountFilterWords(filterContent),
+	})
+}
+
+// APIAdminUpdateForumSettings 更新论坛设置
+func (h *Handlers) APIAdminUpdateForumSettings(c *gin.Context) {
+	var req service.ForumLimits
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	if err := h.Settings.UpdateLimits(req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"message": "设置已保存",
+		"limits":  h.Settings.Limits(),
+	})
+}
+
+// APIAdminFilterWords 读取敏感词配置
+func (h *Handlers) APIAdminFilterWords(c *gin.Context) {
+	content, err := service.ReadFilterWordsFile(h.Cfg.FilterWordsPath())
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "读取敏感词配置失败"})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"content":    content,
+		"word_count": service.CountFilterWords(content),
+		"path":       h.Cfg.FilterWordsPath(),
+	})
+}
+
+// APIAdminUpdateFilterWords 更新敏感词配置
+func (h *Handlers) APIAdminUpdateFilterWords(c *gin.Context) {
+	var req struct {
+		Content string `json:"content"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	if err := service.WriteFilterWordsFile(h.Cfg.FilterWordsPath(), req.Content, h.Filter); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "保存敏感词配置失败"})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"message":    "敏感词已保存并生效",
+		"word_count": service.CountFilterWords(req.Content),
+	})
+}
+
 // APIPosts 帖子列表（分页）
 func (h *Handlers) APIPosts(c *gin.Context) {
 	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
-	size, _ := strconv.Atoi(c.DefaultQuery("size", "30"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", strconv.Itoa(h.Settings.PageSizeDefault())))
 	boardID, _ := strconv.ParseUint(c.Query("board_id"), 10, 64)
 	keyword := c.Query("keyword")

@@ -111,9 +371,14 @@ func (h *Handlers) APIPosts(c *gin.Context) {
 		Page:    page,
 		Size:    size,
 		Keyword: keyword,
+		Sort:    c.DefaultQuery("sort", "latest"),
 	}
 	items, total, err := h.Post.ListItems(q)
 	if err != nil {
+		if isClientLimitError(err) {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+			return
+		}
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
@@ -132,28 +397,42 @@ func (h *Handlers) APIPosts(c *gin.Context) {
 // APIPostDetail 帖子详情
 func (h *Handlers) APIPostDetail(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
-	post, err := h.Post.GetByID(uint(id))
+	post, err := h.Post.FindByID(uint(id))
 	if err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "帖子不存在"})
 		return
 	}
+	if c.Query("skip_view") != "1" {
+		h.Post.RecordView(uint(id))
+	}
 	uid := h.currentUserID(c)
 	if uid == 0 {
 		post.Content = service.RedactMembersOnlyHTML(post.Content)
 	}
 	comments, _ := h.Comment.ListByPost(uint(id), uid, h.isAdmin(c), post.UserID, h.parseGuestCommentIDs(c))
+	isAdmin := h.isAdmin(c)
+	canEdit := h.Post.CanUserEdit(post, uid, isAdmin)
+	editReason := ""
+	if !canEdit && uid > 0 {
+		editReason = h.Post.UserEditBlockReason(post, uid, isAdmin)
+	}
+	isEdited := post.UpdatedAt.Sub(post.CreatedAt) > time.Minute
 	c.JSON(http.StatusOK, gin.H{
-		"post": post,
-		"comment_count": len(comments),
-		"liked": h.Post.IsLiked(uid, uint(id)),
-		"favorited": h.Post.IsFavorited(uid, uint(id)),
+		"post":               post,
+		"comment_count":      len(comments),
+		"liked":              h.Post.IsLiked(uid, uint(id)),
+		"favorited":          h.Post.IsFavorited(uid, uint(id)),
+		"can_edit":           canEdit,
+		"edit_block_reason":  editReason,
+		"is_edited":          isEdited,
+		"post_edit_window_hours": h.Settings.PostEditWindowHours(),
 	})
 }

 // APIPostComments 楼层列表
 func (h *Handlers) APIPostComments(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
-	post, err := h.Post.GetByID(uint(id))
+	post, err := h.Post.FindByID(uint(id))
 	if err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "帖子不存在"})
 		return
@@ -232,6 +511,56 @@ func (h *Handlers) APIFavorites(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"favorites": favs, "total": total, "page": page})
 }

+// APIPostRevisions 帖子编辑历史列表（作者或管理员）
+func (h *Handlers) APIPostRevisions(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	post, err := h.Post.FindByID(uint(id))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "帖子不存在"})
+		return
+	}
+	uid := h.currentUserID(c)
+	isAdmin := h.isAdmin(c)
+	if !isAdmin && post.UserID != uid {
+		c.JSON(http.StatusForbidden, gin.H{"error": "无权查看编辑历史"})
+		return
+	}
+	revs, err := h.Post.ListRevisions(uint(id))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"revisions": revs})
+}
+
+// APIPostRevisionDetail 查看某个历史版本
+func (h *Handlers) APIPostRevisionDetail(c *gin.Context) {
+	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
+	revID, _ := strconv.ParseUint(c.Param("revId"), 10, 64)
+	post, err := h.Post.FindByID(uint(id))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "帖子不存在"})
+		return
+	}
+	uid := h.currentUserID(c)
+	isAdmin := h.isAdmin(c)
+	if !isAdmin && post.UserID != uid {
+		c.JSON(http.StatusForbidden, gin.H{"error": "无权查看编辑历史"})
+		return
+	}
+	rev, err := h.Post.GetRevision(uint(id), uint(revID))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"revision": rev})
+}
+
 func (h *Handlers) APIPing(c *gin.Context) {
 	h.APIPresence(c)
 }
+
+func isClientLimitError(err error) bool {
+	return errors.Is(err, service.ErrSearchKeywordTooShort) ||
+		errors.Is(err, service.ErrSearchKeywordTooLong)
+}
--- a/handler/handlers.go
+++ b/handler/handlers.go
@@ -1,15 +1,16 @@
 package handler

 import (
+	"fmt"
 	"net/http"
 	"strconv"
 	"strings"

 	"github.com/gin-gonic/gin"
-	"github.com/jiang13/forum/config"
-	"github.com/jiang13/forum/middleware"
-	"github.com/jiang13/forum/model"
-	"github.com/jiang13/forum/service"
+	"git.iioio.com/freefire/jiang13-forum/config"
+	"git.iioio.com/freefire/jiang13-forum/middleware"
+	"git.iioio.com/freefire/jiang13-forum/model"
+	"git.iioio.com/freefire/jiang13-forum/service"
 )

 // Handlers 聚合所有 HTTP 处理器
@@ -24,6 +25,7 @@ type Handlers struct {
 	Filter   *service.SensitiveFilter
 	Limiter  *service.RateLimiter
 	Online   *service.OnlineService
+	Settings *service.ForumSettingsService
 }

 func (h *Handlers) setAuthCookie(c *gin.Context, token string) {
@@ -135,7 +137,7 @@ func (h *Handlers) PostNewPage(c *gin.Context) {

 func (h *Handlers) PostEditPage(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
-	post, err := h.Post.GetByID(uint(id))
+	post, err := h.Post.FindByID(uint(id))
 	if err != nil || (!h.isAdmin(c) && post.UserID != h.currentUserID(c)) {
 		c.Redirect(http.StatusFound, "/")
 		return
@@ -237,6 +239,11 @@ func (h *Handlers) APIUploadAvatar(c *gin.Context) {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "请选择头像文件"})
 		return
 	}
+	maxBytes := int64(h.Settings.AvatarMaxMB()) * 1024 * 1024
+	if file.Size > maxBytes {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "头像文件过大"})
+		return
+	}
 	url, err := h.User.UploadAvatar(h.currentUserID(c), file, h.Cfg.UploadDir())
 	if err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -245,6 +252,26 @@ func (h *Handlers) APIUploadAvatar(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"message": "头像已更新", "avatar": url})
 }

+func (h *Handlers) APIUploadPostImage(c *gin.Context) {
+	file, err := c.FormFile("image")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "请选择图片文件"})
+		return
+	}
+	uid := h.currentUserID(c)
+	url, err := service.SaveUploadedImage(
+		file,
+		h.Cfg.PostImageUploadDir(),
+		"/uploads/posts",
+		fmt.Sprintf("%d", uid),
+	)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "图片已上传", "url": url})
+}
+
 func (h *Handlers) APICreatePost(c *gin.Context) {
 	boardID, _ := strconv.ParseUint(c.PostForm("board_id"), 10, 64)
 	title := c.PostForm("title")
--- a/middleware/auth.go
+++ b/middleware/auth.go
@@ -6,8 +6,8 @@ import (
 	"strings"

 	"github.com/gin-gonic/gin"
-	"github.com/jiang13/forum/model"
-	"github.com/jiang13/forum/service"
+	"git.iioio.com/freefire/jiang13-forum/model"
+	"git.iioio.com/freefire/jiang13-forum/service"
 )

 const (
@@ -142,11 +142,11 @@ func respondBanned(c *gin.Context) {
 // RateLimitMiddleware 限流中间件
 func RateLimitMiddleware(limiter *service.RateLimiter, action string) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		key := c.ClientIP() + ":" + action
+		key := c.ClientIP()
 		if uid, ok := c.Get(CtxUserID); ok {
-			key = fmt.Sprintf("%s:%d", action, uid.(uint))
+			key = fmt.Sprintf("%d", uid.(uint))
 		}
-		if !limiter.Allow(key) {
+		if !limiter.Allow(action, key) {
 			c.JSON(http.StatusTooManyRequests, gin.H{"error": "操作过于频繁，请稍后再试"})
 			c.Abort()
 			return
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
freefire	962bb15298	chore: 不再跟踪 embed_static/static/spa 构建产物 SPA 由 Vite 输出至 embed_static，发布前通过 build 脚本构建即可。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-29 02:41:32 +08:00
freefire	55c256654b	支持板块图标与主题色自定义，并优化列表加载与未保存离开提示。新增后端图标校验与色槽规范化，前端展示 BoardBadge/骨架屏，发帖与板块管理页增加未保存确认。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-28 17:13:32 +08:00
freefire	e038d4f9e9	add cursor rules	2026-06-26 05:27:06 +08:00
freefire	f527c91c27	chore: add .gitattributes to fix cross-platform line endings	2026-06-26 05:26:07 +08:00
freefire	773639fd7c	修复头部用户菜单关闭后按钮残留高亮，优化 hover 与 focus 样式。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 06:16:54 +08:00
freefire	9767b54192	限制首页 Feed 自动加载上限，超出后支持手动加载更多历史帖子。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 06:11:33 +08:00
freefire	0eae3f8c47	恢复 README 原有排版：居中标题、徽章、截图表格与 HTML 布局。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 06:00:44 +08:00
freefire	57172eb053	完善 TipTap 编辑器与个人资料页：头像裁剪、Tab 缩进、文章内链、Markdown 工具与 Tooltip，并更新样式与 Feed 缓存。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 05:57:15 +08:00
freefire	e4d1dd139e	更新 README 界面截图，同步 Feed 排序与 TipTap 发帖等新 UI。改进截图脚本：登录后抓取发帖页，使用富文本示例帖并优化等待逻辑。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 04:15:52 +08:00
freefire	b451703642	完善论坛配置与发帖体验：TipTap 富文本、图片上传、修订历史、Feed 排序与后台参数管理。同步更新 README 与 ROADMAP，反映最新功能与开发状态。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 04:11:38 +08:00
freefire	1d273066b0	升级帖子编辑与 Feed 体验：TipTap 富文本、修订历史、排序与编辑时限。将 Markdown 编辑器替换为 TipTap WYSIWYG，新增帖子修订记录与 diff 展示；首页支持最新/回复排序与本地缓存；后台可配置编辑时限与锁定帖子；侧边栏整合板块导航并优化 Feed 布局。 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-16 03:05:45 +08:00
freefire	d0555de28e	统一 React 管理后台，修复评论换行与帖子置顶 - /admin/* 全部由 React SPA 渲染，替代旧版 HTML 后台页面 - 新增仪表盘、帖子/评论/用户管理、系统设置与 JSON API - 帖子详情页支持管理员置顶；评论换行显示修复 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-15 23:06:44 +08:00
freefire	9230f7272d	添加路线图与 Issue 模板，呈现待办事项 - ROADMAP.md 记录已知缺陷、计划功能与已完成项 - README 增加开发状态说明 - Gitea Issue 模板与预填议题文档 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-15 23:01:18 +08:00
freefire	b27289bbea	开源准备：重写 README 展示 UI/UX，更新模块路径 - 新增界面截图与 CONTRIBUTING.md - README 以三栏布局、暗色主题、移动端等视觉亮点为主 - go module 迁移至 git.iioio.com/freefire/jiang13-forum Co-authored-by: Cursor <cursoragent@cursor.com>	2026-06-15 21:15:51 +08:00
				`@@ -1 +0,0 @@`
				import{e as j,r as n,j as s}from"./react-vendor-CgzNJrV9.js";import{u as f,a as g,B as p}from"./index-474mTIgd.js";import{S as N}from"./spinner-DH1syOsQ.js";import{n as v}from"./notify-Zesh5czd.js";import{f as y}from"./content-CKr4Ur51.js";import{A as k}from"./ui-vendor-CdH1UOKW.js";function E(){const t=j(),{user:a,loading:r}=f(),[i,h]=n.useState([]),[u,x]=n.useState(!0);return n.useEffect(()=>{if(!r){if(!a){t("/login");return}g.favorites().then(e=>h(Array.isArray(e.favorites)?e.favorites:[])).catch(e=>v.error(e.message)).finally(()=>x(!1))}},[a,r,t]),r\|\|u?s.jsx("div",{className:"flex justify-center py-16",children:s.jsx(N,{size:"lg"})}):a?s.jsx("div",{className:"page-wrap",children:s.jsxs("div",{className:"page-inner-wide",children:[s.jsxs(p,{variant:"ghost",className:"mb-3",onClick:()=>t("/"),children:[s.jsx(k,{}),"返回"]}),s.jsx("h1",{className:"page-title",children:"我的收藏"}),s.jsxs("p",{className:"page-desc",children:["共 ",i.length," 篇收藏帖子"]}),i.length===0?s.jsxs("div",{className:"empty-state",children:[s.jsx("p",{children:"还没有收藏任何帖子"}),s.jsx(p,{onClick:()=>t("/"),children:"去逛逛"})]}):s.jsx("div",{className:"content-surface",children:i.map(e=>{var o,l,c,d,m;return s.jsx("div",{className:"post-row",onClick:()=>t(`/post/${e.post_id}`),children:s.jsxs("div",{className:"post-body",children:[s.jsx("div",{className:"post-title",children:((o=e.post)==null?void 0:o.title)\|\|"帖子已删除"}),s.jsxs("div",{className:"post-meta",children:[((c=(l=e.post)==null?void 0:l.board)==null?void 0:c.name)&&s.jsx("span",{children:e.post.board.name}),((m=(d=e.post)==null?void 0:d.user)==null?void 0:m.nickname)&&s.jsx("span",{children:e.post.user.nickname}),s.jsxs("span",{children:["收藏于 ",y(e.created_at)]})]})]})},e.id)})})]})}):null}export{E as default};
				`@@ -1 +0,0 @@`
				import{e as f,r as g,j as s,L as b}from"./react-vendor-CgzNJrV9.js";import{u as w,a as F,F as y,b as t,c as n,d as l,e as c,I as i,f as m,o as N,s as d}from"./form-BzHbu9bJ.js";import{u as v,B as L,a as S}from"./index-474mTIgd.js";import{n as u}from"./notify-Zesh5czd.js";import"./ui-vendor-CdH1UOKW.js";const C=N({username:d().min(1,"请输入用户名"),password:d().min(1,"请输入密码")});function z(){const x=f(),{refresh:p}=v(),[h,a]=g.useState(!1),r=w({resolver:F(C),defaultValues:{username:"",password:""}}),j=async e=>{a(!0);try{await S.login(e.username,e.password),await p(),u.success("登录成功"),x("/",{replace:!0})}catch(o){u.error(o instanceof Error?o.message:"登录失败")}finally{a(!1)}};return s.jsx("div",{className:"auth-page",children:s.jsxs("div",{className:"auth-box",children:[s.jsx("div",{className:"logo-mark",children:"姜"}),s.jsx("h1",{children:"登录姜十三论坛"}),s.jsx("p",{className:"subtitle",children:"拾三一隅，自在交流"}),s.jsx(y,{...r,children:s.jsxs("form",{onSubmit:r.handleSubmit(j),className:"space-y-4",children:[s.jsx(t,{control:r.control,name:"username",render:({field:e})=>s.jsxs(n,{children:[s.jsx(l,{children:"用户名"}),s.jsx(c,{children:s.jsx(i,{placeholder:"用户名",autoComplete:"username",...e})}),s.jsx(m,{})]})}),s.jsx(t,{control:r.control,name:"password",render:({field:e})=>s.jsxs(n,{children:[s.jsx(l,{children:"密码"}),s.jsx(c,{children:s.jsx(i,{type:"password",placeholder:"密码",autoComplete:"current-password",...e})}),s.jsx(m,{})]})}),s.jsx(L,{type:"submit",className:"w-full",loading:h,children:"登录"})]})}),s.jsxs("p",{style:{textAlign:"center",marginTop:16,fontSize:13,color:"var(--color-text-3)"},children:["没有账号？",s.jsx(b,{to:"/register",children:"注册"})]})]})})}export{z as default};
				`@@ -1 +0,0 @@`
				import{e as f,r as g,j as s,L as w}from"./react-vendor-CgzNJrV9.js";import{u as b,a as F,F as y,b as a,c as n,d as o,e as t,I as c,f as l,o as k,s as i}from"./form-BzHbu9bJ.js";import{u as N,B as S,a as v}from"./index-474mTIgd.js";import{n as x}from"./notify-Zesh5czd.js";import"./ui-vendor-CdH1UOKW.js";const C=k({username:i().min(1,"请输入用户名"),nickname:i().optional(),password:i().min(6,"密码至少 6 位")});function R(){const u=f(),{refresh:j}=N(),[p,m]=g.useState(!1),r=b({resolver:F(C),defaultValues:{username:"",nickname:"",password:""}}),h=async e=>{m(!0);try{await v.register(e.username,e.password,e.nickname\|\|e.username),await j(),x.success("注册成功"),u("/",{replace:!0})}catch(d){x.error(d instanceof Error?d.message:"注册失败")}finally{m(!1)}};return s.jsx("div",{className:"auth-page",children:s.jsxs("div",{className:"auth-box",children:[s.jsx("div",{className:"logo-mark",children:"姜"}),s.jsx("h1",{children:"注册账号"}),s.jsx("p",{className:"subtitle",children:"首个注册用户自动成为管理员"}),s.jsx(y,{...r,children:s.jsxs("form",{onSubmit:r.handleSubmit(h),className:"space-y-4",children:[s.jsx(a,{control:r.control,name:"username",render:({field:e})=>s.jsxs(n,{children:[s.jsx(o,{children:"用户名"}),s.jsx(t,{children:s.jsx(c,{placeholder:"3-32 位字母数字下划线",autoComplete:"username",...e})}),s.jsx(l,{})]})}),s.jsx(a,{control:r.control,name:"nickname",render:({field:e})=>s.jsxs(n,{children:[s.jsx(o,{children:"昵称"}),s.jsx(t,{children:s.jsx(c,{placeholder:"显示名称（可选）",autoComplete:"nickname",...e})}),s.jsx(l,{})]})}),s.jsx(a,{control:r.control,name:"password",render:({field:e})=>s.jsxs(n,{children:[s.jsx(o,{children:"密码"}),s.jsx(t,{children:s.jsx(c,{type:"password",placeholder:"至少 6 位",autoComplete:"new-password",...e})}),s.jsx(l,{})]})}),s.jsx(S,{type:"submit",className:"w-full",loading:p,children:"注册"})]})}),s.jsxs("p",{style:{textAlign:"center",marginTop:16,fontSize:13,color:"var(--color-text-3)"},children:["已有账号？",s.jsx(w,{to:"/login",children:"登录"})]})]})})}export{R as default};
				`@@ -1 +0,0 @@`
				import{j as n}from"./react-vendor-CgzNJrV9.js";import{c as a,d as o}from"./index-474mTIgd.js";const s=o("inline-flex items-center rounded-md border px-2 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",{variants:{variant:{default:"border-transparent bg-primary text-primary-foreground shadow",secondary:"border-transparent bg-secondary text-secondary-foreground",destructive:"border-transparent bg-destructive text-destructive-foreground shadow",outline:"text-foreground",green:"border-transparent bg-[var(--j13-green-bg)] text-[var(--j13-green)]",orange:"border-transparent bg-orange-100 text-orange-700 dark:bg-orange-950 dark:text-orange-300"}},defaultVariants:{variant:"default"}});function g({className:r,variant:e,...t}){return n.jsx("div",{className:a(s({variant:e}),r),...t})}export{g as B};
				`@@ -1 +0,0 @@`
				function a(n,t){return n.replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">").replace(/@([\w\u4e00-\u9fa5_-]+)/g,'<span class="mention">@$1</span>')}function o(n){const t=new Date(n),e=(new Date().getTime()-t.getTime())/1e3;return e<60?"刚刚":e<3600?`${Math.floor(e/60)}分钟前`:e<86400?`${Math.floor(e/3600)}小时前`:`${t.getMonth()+1}-${t.getDate()} ${String(t.getHours()).padStart(2,"0")}:${String(t.getMinutes()).padStart(2,"0")}`}export{o as f,a as h};
				`@@ -1 +0,0 @@`
				`import{t as s}from"./index-474mTIgd.js";const n={success:r=>s.success(r),error:r=>s.error(r),warning:r=>s.warning(r)};export{n};`
				`@@ -1 +0,0 @@`
				`import{j as e}from"./react-vendor-CgzNJrV9.js";import{c as s}from"./index-474mTIgd.js";import{p as m}from"./ui-vendor-CdH1UOKW.js";const t={sm:"h-4 w-4",md:"h-5 w-5",lg:"h-8 w-8"};function p({className:r,size:a="md"}){return e.jsx(m,{className:s("animate-spin text-[var(--j13-green)]",t[a],r),"aria-label":"加载中"})}export{p as S};`