feat(system):优化后端

1.新增后端测试
2.增加了后端的加密
3.增加了i18n（国际化）

frontend/src/components/Plugin/SkillSettings.tsx

@@ -1,8 +1,10 @@
 import { useState, useEffect } from 'react';
-import { Download, Trash2, Plus, Box, Sparkles } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+import { Download, Trash2, Plus, Box, Sparkles, Loader2, Wand2 } from 'lucide-react';
 import apiClient from '../../api/client';
 
 export function SkillSettings() {
+  const { t } = useTranslation();
   const [skills, setSkills] = useState<string[]>([]);
   const [loading, setLoading] = useState(true);
   const [repoUrl, setRepoUrl] = useState('');
@@ -34,24 +36,24 @@ export function SkillSettings() {
     setError('');
     try {
       await apiClient.post('/api/v1/resource/skill', { repo_url: repoUrl, path: path || null });
-      setMessage('Skill installed successfully');
+      setMessage(t('plugin.skillInstallSuccess'));
       setRepoUrl('');
       setPath('');
       fetchSkills();
     } catch (err: any) {
-      setError(err.response?.data?.message || 'Failed to install skill');
+      setError(err.response?.data?.message || t('plugin.skillInstallFailed'));
     } finally {
       setInstalling(false);
     }
   };
 
   const handleDelete = async (skillName: string) => {
-    if (!confirm(`Delete ${skillName}?`)) return;
+    if (!confirm(t('plugin.deleteSkillConfirm', { name: skillName }))) return;
     try {
       await apiClient.delete(`/api/v1/resource/skill/${skillName}`);
       fetchSkills();
     } catch {
-      alert('Failed to delete skill');
+      alert(t('plugin.skillDeleteFailed'));
     }
   };
 
@@ -60,9 +62,9 @@ export function SkillSettings() {
       <div>
         <div className="flex items-center gap-2 mb-1">
           <Sparkles size={16} className="text-accent" />
-          <h1 className="text-lg font-bold text-text-primary">Skill Management</h1>
+          <h1 className="text-lg font-bold text-text-primary">{t('plugin.skillManagement')}</h1>
         </div>
-        <p className="text-sm text-text-muted">Manage agent skills and functions</p>
+        <p className="text-sm text-text-muted">{t('plugin.skillDesc')}</p>
       </div>
 
       <div className="bg-bg-card rounded-2xl border border-border-primary shadow-sm overflow-hidden">
@@ -71,21 +73,21 @@ export function SkillSettings() {
             <Download size={16} className="text-accent" />
           </div>
           <div>
-            <h2 className="text-sm font-bold text-text-primary">Install Skill</h2>
-            <p className="text-[11px] text-text-muted">Install from a repository</p>
+            <h2 className="text-sm font-bold text-text-primary">{t('plugin.installSkill')}</h2>
+            <p className="text-[11px] text-text-muted">{t('plugin.installSkillDesc')}</p>
           </div>
         </div>
         <div className="p-6">
           <form onSubmit={handleInstall} className="space-y-4">
             <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
               <div>
-                <label className="block text-xs font-semibold text-text-secondary mb-1.5 uppercase tracking-wider">Repository URL</label>
-                <input type="text" required value={repoUrl} onChange={(e) => setRepoUrl(e.target.value)} placeholder="https://github.com/user/repo"
+                <label className="block text-xs font-semibold text-text-secondary mb-1.5 uppercase tracking-wider">{t('plugin.repoUrl')}</label>
+                <input type="text" required value={repoUrl} onChange={(e) => setRepoUrl(e.target.value)} placeholder={t('plugin.repoUrlPlaceholder')}
                   className="w-full px-3.5 py-2.5 bg-bg-input border border-border-primary rounded-xl text-sm text-text-primary focus:outline-none focus:ring-2 focus:ring-accent/20 focus:border-accent placeholder:text-text-muted/50" />
               </div>
               <div>
-                <label className="block text-xs font-semibold text-text-secondary mb-1.5 uppercase tracking-wider">Path (Optional)</label>
-                <input type="text" value={path} onChange={(e) => setPath(e.target.value)} placeholder="subfolder/path"
+                <label className="block text-xs font-semibold text-text-secondary mb-1.5 uppercase tracking-wider">{t('plugin.pathOptional')}</label>
+                <input type="text" value={path} onChange={(e) => setPath(e.target.value)} placeholder={t('plugin.pathPlaceholder')}
                   className="w-full px-3.5 py-2.5 bg-bg-input border border-border-primary rounded-xl text-sm text-text-primary focus:outline-none focus:ring-2 focus:ring-accent/20 focus:border-accent placeholder:text-text-muted/50" />
               </div>
             </div>
@@ -95,7 +97,7 @@ export function SkillSettings() {
               <button type="submit" disabled={installing}
                 className="flex items-center gap-2 px-5 py-2.5 bg-accent text-white rounded-xl hover:bg-accent-hover transition-all shadow-lg shadow-accent/15 text-sm font-medium disabled:opacity-50">
                 <Plus size={14} />
-                {installing ? 'Installing...' : 'Install'}
+                {installing ? t('common.installing') : t('plugin.install')}
               </button>
             </div>
           </form>
@@ -104,13 +106,19 @@ export function SkillSettings() {
 
       <div className="bg-bg-card rounded-2xl border border-border-primary shadow-sm overflow-hidden">
         <div className="px-6 py-4 border-b border-border-primary">
-          <h2 className="text-sm font-bold text-text-primary">Installed Skills ({skills.length})</h2>
+          <h2 className="text-sm font-bold text-text-primary">{t('plugin.installedSkills', { count: skills.length })}</h2>
         </div>
         <div className="p-6">
           {loading ? (
-            <div className="text-text-muted text-sm">Loading skills...</div>
+            <div className="flex flex-col items-center justify-center py-12 text-text-muted">
+              <Loader2 size={24} className="animate-spin mb-3" />
+              <span className="text-sm">{t('common.loading')}</span>
+            </div>
           ) : skills.length === 0 ? (
-            <div className="text-text-muted text-sm">No skills installed yet.</div>
+            <div className="flex flex-col items-center justify-center py-12 text-text-muted">
+              <Wand2 size={32} className="mb-3 opacity-40" />
+              <span className="text-sm">{t('plugin.noSkills')}</span>
+            </div>
           ) : (
             <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
               {skills.map((skill) => (