refactor: Gitea 式目录改组，移除本分支 SPA 与杂项产物

将 model/service/handler/middleware 迁至 models/services/routers/api/modules/auth，并删除 frontend、embed_static、scripts 及误入库缓存/二进制。

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

services/content.go

@@ -0,0 +1,81 @@
+package service
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+var (
+	membersOnlyBlockRe = regexp.MustCompile(`(?is)<members-only\b[^>]*>([\s\S]*?)</members-only>`)
+	replyOnlyBlockRe   = regexp.MustCompile(`(?is)<reply-only\b[^>]*>([\s\S]*?)</reply-only>`)
+	pointsOnlyUnwrapRe = regexp.MustCompile(`(?is)<points-only\b[^>]*>([\s\S]*?)</points-only>`)
+	// style/script 内文本不能进搜索/摘要，否则会出现 "* {color:red}" 之类噪声
+	styleOrScriptRe = regexp.MustCompile(`(?is)<(style|script)\b[^>]*>[\s\S]*?</(style|script)>`)
+	htmlTagRe       = regexp.MustCompile(`<[^>]+>`)
+)
+
+// UnwrapContentGateTags 剥离登录/回复/积分可见外壳，保留内部正文（单页等场景禁用门控）
+func UnwrapContentGateTags(html string) string {
+	if html == "" {
+		return html
+	}
+	html = membersOnlyBlockRe.ReplaceAllString(html, "$1")
+	html = replyOnlyBlockRe.ReplaceAllString(html, "$1")
+	html = pointsOnlyUnwrapRe.ReplaceAllString(html, "$1")
+	return html
+}
+
+// RedactMembersOnlyHTML 未登录时移除会员专属区块内的正文，保留长度提示供前端展示
+func RedactMembersOnlyHTML(html string) string {
+	return redactGatedBlocks(html, membersOnlyBlockRe, "members-only")
+}
+
+// RedactReplyOnlyHTML 未回复时移除「回复可见」区块内的正文，保留长度提示供前端展示
+func RedactReplyOnlyHTML(html string) string {
+	return redactGatedBlocks(html, replyOnlyBlockRe, "reply-only")
+}
+
+// RedactGatedPostHTML 搜索/SEO 等场景：同时遮盖登录可见、回复可见与积分解锁正文
+func RedactGatedPostHTML(html string) string {
+	return RedactPointsOnlyHTML(RedactReplyOnlyHTML(RedactMembersOnlyHTML(html)), nil)
+}
+
+func redactGatedBlocks(html string, re *regexp.Regexp, tag string) string {
+	if html == "" {
+		return html
+	}
+	return re.ReplaceAllStringFunc(html, func(full string) string {
+		m := re.FindStringSubmatch(full)
+		inner := ""
+		if len(m) > 1 {
+			inner = m[1]
+		}
+		length := gatedContentLength(inner)
+		gate := "login"
+		if tag == "reply-only" {
+			gate = "reply"
+		}
+		return `<` + tag + ` data-gate="` + gate + `" data-locked="true" data-length="` + strconv.Itoa(length) + `"></` + tag + `>`
+	})
+}
+
+func gatedContentLength(html string) int {
+	text := strings.TrimSpace(htmlTagRe.ReplaceAllString(html, ""))
+	if text == "" {
+		return 0
+	}
+	return utf8.RuneCountInString(text)
+}
+
+// StripHTMLForSearch 剥离 HTML 标签，生成用于全文搜索的纯文本
+func StripHTMLForSearch(html string) string {
+	if html == "" {
+		return ""
+	}
+	html = styleOrScriptRe.ReplaceAllString(html, " ")
+	text := htmlTagRe.ReplaceAllString(html, " ")
+	text = strings.ReplaceAll(text, "&nbsp;", " ")
+	return strings.Join(strings.Fields(text), " ")
+}