新增 OIDC/SSO、邮件验证码与 Gitea 项目同步，并强化 Feed 与管理后台。

作为 OIDC Provider 对接 Gitea；注册支持邮件验证码/验证码；侧栏同步公开仓库；Feed 分页、文章大纲、标签云与站点品牌设置。

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

frontend/src/pages/ProjectsPage.tsx

@@ -0,0 +1,119 @@
+import { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { ArrowLeft, ExternalLink, FolderGit2 } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { Spinner } from '@/components/ui/spinner';
+import { notify } from '@/lib/notify';
+import { api } from '../api/client';
+import type { GiteaProject } from '../api/types';
+
+function formatRemoteTime(raw?: string | null): string {
+  if (!raw) return '';
+  const d = new Date(raw);
+  if (Number.isNaN(d.getTime())) return '';
+  return d.toLocaleString('zh-CN', {
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+  });
+}
+
+export default function ProjectsPage() {
+  const nav = useNavigate();
+  const [list, setList] = useState<GiteaProject[]>([]);
+  const [total, setTotal] = useState(0);
+  const [page, setPage] = useState(1);
+  const [totalPages, setTotalPages] = useState(0);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    setLoading(true);
+    api.projects({ page, limit: 30 })
+      .then(d => {
+        setList(Array.isArray(d.projects) ? d.projects : []);
+        setTotal(d.total ?? 0);
+        setTotalPages(d.total_pages ?? 0);
+      })
+      .catch(e => notify.error(e instanceof Error ? e.message : '加载失败'))
+      .finally(() => setLoading(false));
+  }, [page]);
+
+  return (
+    <div className="page-wrap">
+      <div className="page-inner-wide">
+        <Button variant="ghost" className="mb-3" onClick={() => nav('/')}>
+          <ArrowLeft />
+          返回
+        </Button>
+        <h1 className="page-title">开源码桶</h1>
+        <p className="page-desc">
+          论坛会员在 Gitea 上的公开仓库
+          {total > 0 ? ` · 共 ${total} 个` : ''}
+        </p>
+
+        {loading ? (
+          <div className="flex justify-center py-16"><Spinner size="lg" /></div>
+        ) : list.length === 0 ? (
+          <div className="empty-state">
+            <FolderGit2 className="empty-state-icon" aria-hidden size={36} strokeWidth={1.5} />
+            <p>暂无同步到的公开项目</p>
+            <p className="page-desc" style={{ marginTop: 8 }}>
+              管理员可在「系统设置 → Gitea 同步」配置后执行同步
+            </p>
+          </div>
+        ) : (
+          <>
+            <div className="content-surface projects-list">
+              {list.map(p => (
+                <article key={p.id} className="project-row">
+                  <div className="project-row-body">
+                    <h2 className="project-row-title">{p.full_name || p.name}</h2>
+                    {p.description ? (
+                      <p className="project-row-desc">{p.description}</p>
+                    ) : null}
+                    <div className="project-row-meta">
+                      <span>{p.owner_login}</span>
+                      {p.updated_at_remote && (
+                        <span>更新于 {formatRemoteTime(p.updated_at_remote)}</span>
+                      )}
+                    </div>
+                  </div>
+                  <a
+                    className="project-row-link"
+                    href={p.html_url}
+                    target="_blank"
+                    rel="noopener noreferrer"
+                  >
+                    在 Gitea 打开
+                    <ExternalLink size={14} aria-hidden />
+                  </a>
+                </article>
+              ))}
+            </div>
+            {totalPages > 1 && (
+              <div className="projects-pager">
+                <Button
+                  variant="outline"
+                  disabled={page <= 1}
+                  onClick={() => setPage(p => Math.max(1, p - 1))}
+                >
+                  上一页
+                </Button>
+                <span className="projects-pager-info">{page} / {totalPages}</span>
+                <Button
+                  variant="outline"
+                  disabled={page >= totalPages}
+                  onClick={() => setPage(p => p + 1)}
+                >
+                  下一页
+                </Button>
+              </div>
+            )}
+          </>
+        )}
+      </div>
+    </div>
+  );
+}