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_test.go

@@ -0,0 +1,46 @@
+package service
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestRedactReplyOnlyHTML(t *testing.T) {
+	in := `<p>公开</p><reply-only><p>秘密答案</p></reply-only>`
+	out := RedactReplyOnlyHTML(in)
+	if strings.Contains(out, "秘密答案") {
+		t.Fatalf("不应保留回复可见正文，得到: %q", out)
+	}
+	if !strings.Contains(out, `data-locked="true"`) || !strings.Contains(out, "reply-only") {
+		t.Fatalf("应保留锁定壳，得到: %q", out)
+	}
+	if !strings.Contains(out, "公开") {
+		t.Fatalf("不应误删公开段落，得到: %q", out)
+	}
+}
+
+func TestRedactGatedPostHTML(t *testing.T) {
+	in := `<members-only><p>登录密</p></members-only><reply-only><p>回复密</p></reply-only>`
+	out := RedactGatedPostHTML(in)
+	if strings.Contains(out, "登录密") || strings.Contains(out, "回复密") {
+		t.Fatalf("门控正文应被遮盖，得到: %q", out)
+	}
+}
+
+func TestUnwrapContentGateTags(t *testing.T) {
+	in := `<p>公开</p>` +
+		`<members-only data-gate="login"><p>登录密</p></members-only>` +
+		`<reply-only data-gate="reply"><p>回复密</p></reply-only>` +
+		`<points-only data-gate="points" data-cost="10"><p>积分密</p></points-only>`
+	out := UnwrapContentGateTags(in)
+	for _, tag := range []string{"members-only", "reply-only", "points-only"} {
+		if strings.Contains(out, tag) {
+			t.Fatalf("应剥离 %s 外壳，得到: %q", tag, out)
+		}
+	}
+	for _, want := range []string{"公开", "登录密", "回复密", "积分密"} {
+		if !strings.Contains(out, want) {
+			t.Fatalf("应保留内部正文 %q，得到: %q", want, out)
+		}
+	}
+}