初始化项目：基础设施 + 用户认证 + 后台管理系统 + AGPL 3.0 许可

templates/admin/html/dashboard/index.html

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+{{template "admin/layout/base.html" .}}
+        <div class="page-header">
+            <h1>欢迎，{{.Username}}</h1>
+            <p class="page-desc">MetaLab 管理控制面板</p>
+        </div>
+
+        <div class="stats-grid">
+            <div class="stat-card">
+                <div class="stat-icon stat-blue"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="8" r="4"/><path d="M4 20c0-4 4-7 8-7s8 3 8 7"/></svg></div>
+                <div class="stat-info"><div class="stat-label">用户总数</div><div class="stat-value">—</div></div>
+            </div>
+            <div class="stat-card">
+                <div class="stat-icon stat-green"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><rect x="3" y="3" width="18" height="18"/><line x1="9" y1="9" x2="15" y2="9"/><line x1="9" y1="13" x2="15" y2="13"/></svg></div>
+                <div class="stat-info"><div class="stat-label">帖子总数</div><div class="stat-value">—</div></div>
+            </div>
+            <div class="stat-card">
+                <div class="stat-icon stat-orange"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"/></svg></div>
+                <div class="stat-info"><div class="stat-label">当前角色</div><div class="stat-value">{{.Role}}</div></div>
+            </div>
+        </div>
+
+        <div class="info-card">
+            <h3>快速开始</h3>
+            <ul>
+                <li>在左侧导航选择管理模块</li>
+                <li>使用「用户管理」查看、搜索和封禁用户</li>
+                <li>使用「返回前台」链接回到主站</li>
+            </ul>
+        </div>
+{{template "admin/layout/footer.html" .}}