feat: 可配置站点 URL 风格

- 新增 urlStyle 工具与测试：postPath/userPath/sitePagePath 统一生成链接
- 管理端新增 UrlStylePanel 设置面板，settings 服务与 handler 适配
- 全站路由链接与 JSON-LD/sitemap 切换为统一 URL 生成
- middleware 与相关组件适配

frontend/lib/jsonLd.ts

@@ -1,4 +1,5 @@
 import { absoluteCanonical, resolveSiteOrigin, type QueryBag } from "./siteUrl.ts";
+import { postPath, userPath, type UrlStyle } from "./urlStyle.ts";
 
 /** 防止用户正文里的 </script> 提前闭合 JSON-LD 脚本 */
 export function serializeJsonLd(data: unknown): string {
@@ -15,8 +16,8 @@ export type JsonLdPerson = {
   name: string;
 };
 
-function personNode(person: JsonLdPerson) {
-  const url = person.id ? absoluteCanonical(`/u/${person.id}`) : undefined;
+function personNode(person: JsonLdPerson, urlStyle: UrlStyle = "default") {
+  const url = person.id ? absoluteCanonical(userPath(urlStyle, person.id)) : undefined;
   return {
     "@type": "Person" as const,
     name: person.name,
@@ -52,7 +53,9 @@ export function listingJsonLd(input: {
   items: { id: number; name: string }[];
   page: number;
   pageSize: number;
+  urlStyle?: UrlStyle;
 }): Record<string, unknown> | null {
+  const urlStyle = input.urlStyle ?? "default";
   const site = websiteNode(input.siteName, input.siteDescription);
   const pageUrl = absoluteCanonical(input.path, input.query);
   const origin = resolveSiteOrigin();
@@ -75,7 +78,7 @@ export function listingJsonLd(input: {
             "@type": "ListItem",
             position: (input.page - 1) * input.pageSize + i + 1,
             name: item.name,
-            url: `${origin}/post/${item.id}`,
+            url: `${origin}${postPath(urlStyle, item.id)}`,
           })),
         },
       },
@@ -105,8 +108,10 @@ export function questionJsonLd(input: {
   pageUrl?: string;
   accepted?: JsonLdVisibleComment | null;
   answers: JsonLdVisibleComment[];
+  urlStyle?: UrlStyle;
 }): Record<string, unknown> | null {
-  const entityUrl = absoluteCanonical(`/post/${input.postId}`);
+  const urlStyle = input.urlStyle ?? "default";
+  const entityUrl = absoluteCanonical(postPath(urlStyle, input.postId));
   const origin = resolveSiteOrigin();
   const site = websiteId();
   if (!entityUrl || !origin || !site) return null;
@@ -120,7 +125,7 @@ export function questionJsonLd(input: {
     text: a.content,
     dateCreated: a.created_at,
     url: commentUrl(entityUrl, a.id),
-    ...(a.author ? { author: personNode(a.author) } : {}),
+    ...(a.author ? { author: personNode(a.author, urlStyle) } : {}),
   });
   return {
     "@context": "https://schema.org",
@@ -137,7 +142,7 @@ export function questionJsonLd(input: {
       ...(input.text ? { text: input.text } : {}),
       dateCreated: input.createdAt,
       ...(input.updatedAt ? { dateModified: input.updatedAt } : {}),
-      author: personNode(input.author),
+      author: personNode(input.author, urlStyle),
       ...(input.accepted && input.accepted.content.trim()
         ? { acceptedAnswer: answerNode(input.accepted) }
         : {}),
@@ -158,8 +163,10 @@ export function discussionJsonLd(input: {
   commentCount?: number;
   viewCount?: number;
   comments: JsonLdVisibleComment[];
+  urlStyle?: UrlStyle;
 }): Record<string, unknown> | null {
-  const entityUrl = absoluteCanonical(`/post/${input.postId}`);
+  const urlStyle = input.urlStyle ?? "default";
+  const entityUrl = absoluteCanonical(postPath(urlStyle, input.postId));
   const site = websiteId();
   if (!entityUrl || !site) return null;
   const pageUrl = input.pageUrl || entityUrl;
@@ -174,7 +181,7 @@ export function discussionJsonLd(input: {
     datePublished: input.createdAt,
     ...(input.updatedAt ? { dateModified: input.updatedAt } : {}),
     inLanguage: "zh-CN",
-    author: personNode(input.author),
+    author: personNode(input.author, urlStyle),
     isPartOf: { "@id": site },
     ...(pageUrl !== entityUrl
       ? {
@@ -202,7 +209,7 @@ export function discussionJsonLd(input: {
             text: c.content,
             dateCreated: c.created_at,
             url: commentUrl(entityUrl, c.id),
-            ...(c.author ? { author: personNode(c.author) } : {}),
+            ...(c.author ? { author: personNode(c.author, urlStyle) } : {}),
           })),
         }
       : {}),
@@ -215,8 +222,9 @@ export function profileJsonLd(input: {
   username: string;
   signature?: string;
   pageUrl?: string;
+  urlStyle?: UrlStyle;
 }): Record<string, unknown> | null {
-  const personUrl = absoluteCanonical(`/u/${input.id}`);
+  const personUrl = absoluteCanonical(userPath(input.urlStyle ?? "default", input.id));
   if (!personUrl) return null;
   const pageUrl = input.pageUrl || personUrl;
   return {