feat(admin): migrate admin UI to Vue3

app.py

@@ -1217,18 +1217,30 @@ def admin_login_page():
 @admin_required
 def admin_page():
     """后台管理页面"""
-    return render_template('admin.html')
+    manifest_path = os.path.join(app.root_path, 'static', 'admin', '.vite', 'manifest.json')
+    try:
+        with open(manifest_path, 'r', encoding='utf-8') as f:
+            manifest = json.load(f)
 
+        entry = manifest.get('index.html') or {}
+        js_file = entry.get('file')
+        css_files = entry.get('css') or []
 
+        if not js_file:
+            logger.warning(f"[admin_spa] manifest缺少入口文件: {manifest_path}")
+            return render_template('admin_legacy.html')
 
-
-@app.route('/yuyx/vip')
-@admin_required
-def vip_admin_page():
-    """VIP管理页面"""
-    return render_template('vip_admin.html')
-
-
+        return render_template(
+            'admin.html',
+            admin_spa_js_file=f'admin/{js_file}',
+            admin_spa_css_files=[f'admin/{p}' for p in css_files],
+        )
+    except FileNotFoundError:
+        logger.warning(f"[admin_spa] 未找到manifest: {manifest_path}，回退旧版后台模板")
+        return render_template('admin_legacy.html')
+    except Exception as e:
+        logger.error(f"[admin_spa] 加载manifest失败: {e}")
+        return render_template('admin_legacy.html')
 # ==================== 用户认证API ====================
 
 @app.route('/api/register', methods=['POST'])