Add plugin management to WebUI backend and frontend

Implemented backend API and router for plugin management (list, reload, enable/disable, uninstall) and exposed corresponding frontend controller and dashboard page. Updated navigation and site config to include plugin management. Refactored plugin manager adapter for public methods and improved plugin metadata handling.

packages/napcat-webui-frontend/src/pages/dashboard/plugin.tsx

@@ -0,0 +1,115 @@
+import { Button } from '@heroui/button';
+import { useEffect, useState } from 'react';
+import toast from 'react-hot-toast';
+import { IoMdRefresh } from 'react-icons/io';
+
+import PageLoading from '@/components/page_loading';
+import PluginDisplayCard from '@/components/display_card/plugin_card';
+import PluginManager, { PluginItem } from '@/controllers/plugin_manager';
+import useDialog from '@/hooks/use-dialog';
+
+export default function PluginPage () {
+  const [plugins, setPlugins] = useState<PluginItem[]>([]);
+  const [loading, setLoading] = useState(false);
+  const dialog = useDialog();
+
+  const loadPlugins = async () => {
+    setLoading(true);
+    try {
+      const data = await PluginManager.getPluginList();
+      setPlugins(data);
+    } catch (e: any) {
+      toast.error(e.message);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    loadPlugins();
+  }, []);
+
+  const handleReload = async (name: string) => {
+    const loadingToast = toast.loading('重载中...');
+    try {
+      await PluginManager.reloadPlugin(name);
+      toast.success('重载成功', { id: loadingToast });
+      loadPlugins();
+    } catch (e: any) {
+      toast.error(e.message, { id: loadingToast });
+    }
+  };
+
+  const handleToggle = async (plugin: PluginItem) => {
+    const isEnable = plugin.status !== 'active';
+    const actionText = isEnable ? '启用' : '禁用';
+    const loadingToast = toast.loading(`${actionText}中...`);
+    try {
+      await PluginManager.setPluginStatus(plugin.name, isEnable, plugin.filename);
+      toast.success(`${actionText}成功`, { id: loadingToast });
+      loadPlugins();
+    } catch (e: any) {
+      toast.error(e.message, { id: loadingToast });
+    }
+  };
+
+  const handleUninstall = async (plugin: PluginItem) => {
+    return new Promise<void>((resolve, reject) => {
+      dialog.confirm({
+        title: '卸载插件',
+        content: `确定要卸载插件「${plugin.name}」吗? 此操作不可恢复。`,
+        onConfirm: async () => {
+          const loadingToast = toast.loading('卸载中...');
+          try {
+            await PluginManager.uninstallPlugin(plugin.name, plugin.filename);
+            toast.success('卸载成功', { id: loadingToast });
+            loadPlugins();
+            resolve();
+          } catch (e: any) {
+            toast.error(e.message, { id: loadingToast });
+            reject(e);
+          }
+        },
+        onCancel: () => {
+          resolve();
+        }
+      });
+    });
+  };
+
+  return (
+    <>
+      <title>插件管理 - NapCat WebUI</title>
+      <div className='p-2 md:p-4 relative'>
+        <PageLoading loading={loading} />
+        <div className='flex mb-6 items-center gap-4'>
+          <h1 className="text-2xl font-bold">插件管理</h1>
+          <Button
+            isIconOnly
+            className="bg-default-100/50 hover:bg-default-200/50 text-default-700 backdrop-blur-md"
+            radius='full'
+            onPress={loadPlugins}
+          >
+            <IoMdRefresh size={24} />
+          </Button>
+        </div>
+
+        {plugins.length === 0 ? (
+          <div className="text-default-400">暂时没有安装插件</div>
+        ) : (
+          <div className='grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 2xl:grid-cols-5 justify-start items-stretch gap-x-2 gap-y-4'>
+            {plugins.map(plugin => (
+              <PluginDisplayCard
+                key={plugin.name}
+                data={plugin}
+                onReload={() => handleReload(plugin.name)}
+                onToggleStatus={() => handleToggle(plugin)}
+                onUninstall={() => handleUninstall(plugin)}
+              />
+            ))}
+          </div>
+        )}
+      </div>
+    </>
+  );
+}