清除业务契约双读：抽奖/草稿/时间戳/邮件只认新格式，并删除 legacy 短代码改写。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/markdown/hide.go

@@ -248,7 +248,7 @@ func MatchPasswordBlocks(content, password string) ([]int, error) {
 	return hit, nil
 }
 
-// WrapContentAsHide 将整篇正文包进单一隐藏块（旧帖迁移用）
+// WrapContentAsHide 将整篇正文包进单一隐藏块
 func WrapContentAsHide(kind string, points int, content string) string {
 	body := strings.TrimRight(content, "\n")
 	open := openMarkerLine(kind, points, "", false)
@@ -258,7 +258,7 @@ func WrapContentAsHide(kind string, points int, content string) string {
 	return open + "\n" + body + "\n[/hide]\n"
 }
 
-// HasHideBlocks 快速判断正文是否已含隐藏块（迁移幂等）
+// HasHideBlocks 判断正文是否已含隐藏块
 func HasHideBlocks(content string) bool {
 	blocks, err := ParseHideBlocks(content)
 	if err != nil {

backend/markdown/hide_test.go

@@ -177,20 +177,3 @@ func TestTimelineDoesNotBreakHideValidate(t *testing.T) {
 		t.Fatalf("timeline-only should pass: %v", err)
 	}
 }
-
-func TestRewriteLegacyDirectives(t *testing.T) {
-	src := "公开\n\n:::hide login\n秘\n:::\n\n:::timeline\n## 2026-01-01 A\n:::\n"
-	got := RewriteLegacyDirectives(src)
-	if strings.Contains(got, ":::") {
-		t.Fatalf("legacy remains: %q", got)
-	}
-	if !strings.Contains(got, "[hide login]") || !strings.Contains(got, "[/hide]") {
-		t.Fatalf("hide missing: %q", got)
-	}
-	if !strings.Contains(got, "[timeline]") || !strings.Contains(got, "[/timeline]") {
-		t.Fatalf("timeline missing: %q", got)
-	}
-	if err := ValidateHideContent(got); err != nil {
-		t.Fatal(err)
-	}
-}

backend/markdown/legacy_rewrite.go

@@ -1,158 +0,0 @@
-package markdown
-
-import (
-	"strconv"
-	"strings"
-)
-
-// RewriteLegacyDirectives 将旧式 :::hide / :::timeline / 裸 ::: 改写为行级 BBCode。
-// 幂等：已是 BBCode 的内容原样返回（若无旧标记）。代码围栏内不改写。
-func RewriteLegacyDirectives(content string) string {
-	if content == "" {
-		return content
-	}
-	if !strings.Contains(content, ":::") {
-		return content
-	}
-	lines := splitLines(content)
-	var out []string
-	inCode := false
-	i := 0
-	for i < len(lines) {
-		trimmed := strings.TrimSpace(lines[i])
-		if strings.HasPrefix(trimmed, "```") {
-			inCode = !inCode
-			out = append(out, lines[i])
-			i++
-			continue
-		}
-		if inCode {
-			out = append(out, lines[i])
-			i++
-			continue
-		}
-
-		if kind, pts, pwd, locked, ok := parseLegacyHideOpen(trimmed); ok {
-			bodyLines := make([]string, 0)
-			j := i + 1
-			innerCode := false
-			found := false
-			for j < len(lines) {
-				inner := strings.TrimSpace(lines[j])
-				if strings.HasPrefix(inner, "```") {
-					innerCode = !innerCode
-					bodyLines = append(bodyLines, lines[j])
-					j++
-					continue
-				}
-				if innerCode {
-					bodyLines = append(bodyLines, lines[j])
-					j++
-					continue
-				}
-				if inner == ":::" {
-					found = true
-					break
-				}
-				bodyLines = append(bodyLines, lines[j])
-				j++
-			}
-			out = append(out, openMarkerLine(kind, pts, pwd, locked))
-			out = append(out, bodyLines...)
-			if found {
-				out = append(out, "[/hide]")
-				i = j + 1
-			} else {
-				// 未闭合：仍写出已转换开标记与正文，避免丢内容
-				i = j
-			}
-			continue
-		}
-
-		if trimmed == ":::timeline" || strings.HasPrefix(trimmed, ":::timeline ") {
-			bodyLines := make([]string, 0)
-			j := i + 1
-			innerCode := false
-			found := false
-			for j < len(lines) {
-				inner := strings.TrimSpace(lines[j])
-				if strings.HasPrefix(inner, "```") {
-					innerCode = !innerCode
-					bodyLines = append(bodyLines, lines[j])
-					j++
-					continue
-				}
-				if innerCode {
-					bodyLines = append(bodyLines, lines[j])
-					j++
-					continue
-				}
-				if inner == ":::" {
-					found = true
-					break
-				}
-				bodyLines = append(bodyLines, lines[j])
-				j++
-			}
-			out = append(out, "[timeline]")
-			out = append(out, bodyLines...)
-			if found {
-				out = append(out, "[/timeline]")
-				i = j + 1
-			} else {
-				i = j
-			}
-			continue
-		}
-
-		out = append(out, lines[i])
-		i++
-	}
-	return strings.Join(out, "\n")
-}
-
-// parseLegacyHideOpen 解析旧式 :::hide <kind> [arg] [locked]
-func parseLegacyHideOpen(trimmed string) (kind string, points int, password string, locked bool, ok bool) {
-	if !strings.HasPrefix(trimmed, ":::hide") {
-		return "", 0, "", false, false
-	}
-	rest := strings.TrimSpace(trimmed[len(":::hide"):])
-	if rest == "" {
-		return "", 0, "", false, false
-	}
-	parts := strings.Fields(rest)
-	if len(parts) == 0 {
-		return "", 0, "", false, false
-	}
-	kind = parts[0]
-	switch kind {
-	case HideKindLogin, HideKindReply, HideKindPoints, HideKindPassword:
-	default:
-		return "", 0, "", false, false
-	}
-	idx := 1
-	if kind == HideKindPoints {
-		if idx >= len(parts) {
-			return "", 0, "", false, false
-		}
-		n, err := strconv.Atoi(parts[idx])
-		if err != nil {
-			return "", 0, "", false, false
-		}
-		points = n
-		idx++
-	} else if kind == HideKindPassword {
-		if idx < len(parts) && parts[idx] != "locked" {
-			password = parts[idx]
-			idx++
-		}
-	}
-	for ; idx < len(parts); idx++ {
-		if parts[idx] == "locked" {
-			locked = true
-		} else {
-			return "", 0, "", false, false
-		}
-	}
-	return kind, points, password, locked, true
-}

backend/service/operations_mail.go

@@ -113,9 +113,6 @@ func (o *Operations) smtp(ctx context.Context, c MailConfig, p *mailPayload, id
 
 const defaultMailSubject = "{{site_name}} · {{purpose}}"
 
-// 旧版内置正文：读取时若仍是此值，升级为新默认模板。
-const legacyMailBody = "{{logo}}<h1>{{site_name}} · {{purpose}}</h1><p>您的验证码：</p><p><strong>{{code}}</strong></p><p>15 分钟内有效。如果不是您本人操作，请忽略本邮件。</p><p><a href=\"{{link}}\">前往站点完成{{purpose}}</a>（请粘贴以上验证码）</p>"
-
 const defaultMailBody = `<div class="email-wrap" style="margin:0;padding:32px 16px;background:#f5f7fb;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;line-height:1.6;color:#1e293b;">
 <style>
 .email-wrap{margin:0;padding:32px 16px;background:#f5f7fb;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;line-height:1.6;color:#1e293b;}
@@ -158,8 +155,7 @@ func (c *MailConfig) applyTemplateDefaults() {
 	if strings.TrimSpace(c.SubjectTemplate) == "" {
 		c.SubjectTemplate = defaultMailSubject
 	}
-	body := strings.TrimSpace(c.BodyTemplate)
+	if strings.TrimSpace(c.BodyTemplate) == "" {
-	if body == "" || body == legacyMailBody {
 		c.BodyTemplate = defaultMailBody
 	}
 }

backend/service/operations_test.go

@@ -589,10 +589,11 @@ func TestMailTemplateGuards(t *testing.T) {
 	if cfg.BodyTemplate != defaultMailBody || cfg.SubjectTemplate != defaultMailSubject {
 		t.Fatal("defaults not applied")
 	}
-	cfg.BodyTemplate = legacyMailBody
+	customBody := "<p>{{code}}</p>"
+	cfg.BodyTemplate = customBody
 	cfg.applyTemplateDefaults()
-	if cfg.BodyTemplate != defaultMailBody {
+	if cfg.BodyTemplate != customBody {
-		t.Fatal("legacy default not upgraded")
+		t.Fatal("自定义正文不应被默认模板覆盖")
 	}
 	o := &Operations{cfg: &config.Config{SiteURL: "https://forum.example.com", DevMode: true}}
 	if e := o.validate(nil, "mail", &MailConfig{Port: 465, TLS: "tls", Timeout: 10, Retention: 30, BodyTemplate: "<script></script><p>no code</p>"}); e == nil || !strings.Contains(e.Error(), "{{code}}") {

backend/service/post_file.go

@@ -14,9 +14,9 @@ import (
 	"gorm.io/gorm"
 )
 
-// 兼容旧引用：默认体积/个数（实际限额读 SettingService）
+// 附件默认体积/个数上限（实际限额读 SettingService；此处供校验与测试引用）
 const (
-	FileMaxBytes       = 20 << 20 // 默认 20 MiB（缺省配置）
+	FileMaxBytes       = 20 << 20 // 默认 20 MiB
 	MaxPostAttachments = 10
 )
 

backend/service/post_interact.go

@@ -49,7 +49,7 @@ type LotteryPrize struct {
 
 type LotteryMeta struct {
 	Prizes     []LotteryPrize `json:"prizes"`
-	Slots      int            `json:"slots"` // 由 prizes 数量合计推导，兼容旧数据
+	Slots      int            `json:"slots"` // 由 prizes 数量合计，仅便于展示/校验
 	Drawn      bool           `json:"drawn"`
 	WinnerIDs  []uint         `json:"winner_ids"`
 	Closed     bool           `json:"closed"`
@@ -122,13 +122,7 @@ func parseLotteryMeta(raw string) (*LotteryMeta, error) {
 	if err := json.Unmarshal([]byte(raw), &m); err != nil {
 		return nil, errors.New("抽奖配置无效")
 	}
-	// 旧数据只有 slots：合成单一奖品项
-	if len(m.Prizes) == 0 && m.Slots > 0 {
-		m.Prizes = []LotteryPrize{{Name: "奖品", Count: m.Slots}}
-	}
-	if len(m.Prizes) > 0 {
 	m.Slots = lotterySlotsFromPrizes(m.Prizes)
-	}
 	return &m, nil
 }
 
@@ -592,16 +586,12 @@ func (s *PostService) buildQuestionState(post *model.Post, viewerID uint, canMan
 	}
 	floor := FloorNumber(s.db, post.ID, m.AcceptedCommentID)
 	answer := s.loadAcceptedAnswer(post.ID, m.AcceptedCommentID, floor, viewerID, isMod)
-	solvedAt := m.SolvedAt
-	if m.Solved && solvedAt == "" && answer != nil && !answer.CreatedAt.IsZero() {
-		solvedAt = answer.CreatedAt.UTC().Format(time.RFC3339) // 旧数据：无 solved_at 时用采纳评论时间
-	}
 	return &QuestionState{
 		Solved:            m.Solved,
 		AcceptedCommentID: m.AcceptedCommentID,
 		AcceptedFloor:     floor,
 		AcceptedAnswer:    answer,
-		SolvedAt:          solvedAt,
+		SolvedAt:          m.SolvedAt,
 		CanAccept:         canManage && !m.Solved,
 		CanSolve:          canManage && !m.Solved,
 		// 已采纳答案后不可重新打开；仅「手动标已解决」可撤回
@@ -688,17 +678,13 @@ func (s *PostService) buildPollState(post *model.Post, viewerID uint, canClose b
 		opts[i] = stat
 	}
 	voters := len(voterSet)
-	closedAt := m.ClosedAt
-	if m.Closed && closedAt == "" {
-		closedAt = m.EndsAt // 旧数据：无 closed_at 时用截止时刻兜底
-	}
 	return &PollState{
 		Options:        opts,
 		Multi:          m.Multi,
 		Closed:         m.Closed,
 		Anonymous:      m.Anonymous,
 		EndsAt:         m.EndsAt,
-		ClosedAt:       closedAt,
+		ClosedAt:       m.ClosedAt,
 		TotalVotes:     total,
 		Voters:         voters,
 		MyOptions:      my,

frontend/components/PostComposer.tsx

@@ -69,8 +69,6 @@ type ComposeDraft = {
   tags: string;
   boardId: number;
   postType?: string;
-  /** @deprecated 旧草稿仅有 JSON 字符串；新草稿用 typeForm */
-  typeMeta?: string;
   typeForm?: TypeFormSnapshot;
   updatedAt: number;
 };
@@ -90,70 +88,12 @@ function serializeTags(tags: string[]): string {
   return tags.join(", ");
 }
 
-/** 从旧版 typeMeta JSON 尽量还原类型表单（不完整则用默认） */
-function typeFormFromMeta(
-  postType: PostTypeValue,
-  raw: string | undefined
-): Partial<TypeFormSnapshot> {
-  if (!raw?.trim()) return {};
-  try {
-    const m = JSON.parse(raw) as Record<string, unknown>;
-    const out: Partial<TypeFormSnapshot> = {};
-    const endsAt = typeof m.ends_at === "string" ? m.ends_at : "";
-    const expireDays = Number(m.expire_days);
-    if (endsAt) {
-      const t = Date.parse(endsAt);
-      if (Number.isFinite(t)) {
-        out.deadlineMode = "custom";
-        out.customEndsLocal = toLocalInputValue(new Date(t));
-      }
-    } else if (Number.isFinite(expireDays) && expireDays > 0) {
-      out.deadlineMode = "preset";
-    }
-    if (postType === "poll") {
-      if (Array.isArray(m.options)) {
-        const opts = m.options.map((o) => String(o ?? ""));
-        out.pollOptions = opts.length >= 2 ? opts : ["", ""];
-      }
-      out.pollMulti = !!m.multi;
-      out.pollAnonymous = m.anonymous !== false;
-      if ((POLL_EXPIRE_DAYS as readonly number[]).includes(expireDays)) {
-        out.pollExpireDays = expireDays;
-      }
-    } else if (postType === "bounty") {
-      const p = Number(m.points);
-      out.bountyPoints = p > 0 ? Math.floor(p) : "";
-      if ((BOUNTY_EXPIRE_DAYS as readonly number[]).includes(expireDays)) {
-        out.bountyExpireDays = expireDays;
-      }
-    } else if (postType === "lottery") {
-      const prizes = Array.isArray(m.prizes)
-        ? (m.prizes as { name?: string; count?: number }[]).map((p) => ({
-            name: String(p.name || "").slice(0, 32),
-            count:
-              typeof p.count === "number" && p.count >= 1
-                ? Math.floor(p.count)
-                : ("" as const),
-          }))
-        : [];
-      out.lotteryPrizes =
-        prizes.length > 0 ? prizes : [{ name: "", count: "" as const }];
-      if ((LOTTERY_EXPIRE_DAYS as readonly number[]).includes(expireDays)) {
-        out.lotteryExpireDays = expireDays;
-      }
-    }
-    return out;
-  } catch {
-    return {};
-  }
-}
-
 function draftHasContent(d: ComposeDraft): boolean {
   if (d.title.trim() || d.content.trim() || d.tags.trim()) return true;
   if (d.boardId > 0) return true;
   const pt = normalizePostType(d.postType);
   if (pt !== "discussion") return true;
-  if (d.typeForm || (d.typeMeta && d.typeMeta.trim())) return true;
+  if (d.typeForm) return true;
   return false;
 }
 
@@ -177,8 +117,14 @@ function readDraft(): ComposeDraft | null {
   try {
     const raw = localStorage.getItem(DRAFT_KEY);
     if (!raw) return null;
-    const d = JSON.parse(raw) as ComposeDraft;
+    const d = JSON.parse(raw) as ComposeDraft & { typeMeta?: string };
     if (!d || typeof d !== "object") return null;
+    // 仅含旧 typeMeta、无 typeForm 的草稿已废弃
+    if (d.typeMeta && !d.typeForm) {
+      clearDraft();
+      return null;
+    }
+    delete d.typeMeta;
     return d;
   } catch {
     return null;
@@ -295,7 +241,6 @@ export default function PostComposer(props: PostComposerProps) {
     try {
       const raw = JSON.parse(props.initialTypeMeta || "{}") as {
         prizes?: { name?: string; count?: number }[];
-        slots?: number;
       };
       if (Array.isArray(raw.prizes) && raw.prizes.length > 0) {
         return raw.prizes.map((p) => ({
@@ -303,9 +248,6 @@ export default function PostComposer(props: PostComposerProps) {
           count: Math.max(1, Number(p.count) || 1),
         }));
       }
-      // 旧数据仅有 slots：数量可回填，名称留空让作者补全
-      const slots = Number(raw.slots);
-      if (slots > 0) return [{ name: "", count: slots }];
       return [{ name: "", count: "" }];
     } catch {
       return [{ name: "", count: "" }];
@@ -573,9 +515,7 @@ export default function PostComposer(props: PostComposerProps) {
     const nextType = normalizePostType(draftBanner.postType);
     setPostType(nextType);
 
-    const fromMeta = typeFormFromMeta(nextType, draftBanner.typeMeta);
     const snap: Partial<TypeFormSnapshot> = {
-      ...fromMeta,
       ...(draftBanner.typeForm || {}),
     };
 
@@ -615,9 +555,7 @@ export default function PostComposer(props: PostComposerProps) {
     }
     if (snap.customEndsLocal) setCustomEndsLocal(snap.customEndsLocal);
 
-    // 编辑态用的 typeMeta 字符串一并同步，避免后续误用空串
+    if (draftBanner.typeForm) setTypeMeta("");
-    if (draftBanner.typeMeta) setTypeMeta(draftBanner.typeMeta);
-    else if (draftBanner.typeForm) setTypeMeta("");
 
     setDraftBanner(null);
     skipDraftSave.current = false;

frontend/components/PostInteractPanels.tsx

@@ -574,11 +574,7 @@ function LotteryPanel({
     }
   };
 
-  const prizes = state.prizes?.length
+  const prizes = state.prizes?.length ? state.prizes : [];
-    ? state.prizes
-    : state.slots > 0
-      ? [{ name: "奖品", count: state.slots }]
-      : [];
 
   const statusBadge = state.drawn
     ? { cls: "badge-status badge-status-closed", label: "已开奖" }