feat: add profile management page with full CRUD UI

- Add frontend API layer, Pinia store, and 5 components (ProfileCard, ProfilesPanel, ProfileCreateModal, ProfileRenameModal, ProfileImportModal)
- Add ProfilesView page with card grid layout and expandable details
- Modify export endpoint to stream file as browser download instead of returning server path
- Add sidebar nav entry, router route, and i18n translations (en/zh)
- Support create, rename, delete, switch (with gateway restart), export, and import profiles

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/i18n/locales/zh.ts

@@ -31,6 +31,9 @@ export default {
     disable: '禁用',
     configured: '已配置',
     notConfigured: '未配置',
+    confirm: '确定',
+    expand: '展开',
+    collapse: '收起',
   },
 
   // 侧边栏
@@ -38,6 +41,7 @@ export default {
     chat: '对话',
     jobs: '任务',
     models: '模型',
+    profiles: '配置',
     skills: '技能',
     memory: '记忆',
     logs: '日志',
@@ -197,6 +201,50 @@ export default {
     fetchFailed: '获取模型失败',
   },
 
+  // 配置
+  profiles: {
+    title: '配置',
+    create: '创建配置',
+    import: '导入',
+    export: '导出',
+    rename: '重命名',
+    delete: '删除',
+    switchTo: '切换到',
+    switchConfirm: '切换到配置 "{name}" 将重启网关，是否继续？',
+    switchSuccess: '已切换到配置 "{name}"',
+    switchFailed: '切换配置失败，网关可能需要手动重启',
+    createSuccess: '配置 "{name}" 已创建',
+    createFailed: '创建配置失败',
+    renameSuccess: '配置已重命名',
+    renameFailed: '重命名配置失败',
+    deleteConfirm: '确定删除配置 "{name}" 吗？',
+    deleteSuccess: '配置已删除',
+    deleteFailed: '删除配置失败',
+    exportSuccess: '配置已导出',
+    exportFailed: '导出配置失败',
+    importSuccess: '配置已导入',
+    importFailed: '导入配置失败',
+    name: '配置名称',
+    namePlaceholder: '输入配置名称',
+    newName: '新名称',
+    newNamePlaceholder: '输入新名称',
+    cloneFromCurrent: '从当前配置克隆',
+    archivePath: '归档路径',
+    archivePathPlaceholder: '归档文件的服务器路径',
+    importName: '配置名称（可选）',
+    importNamePlaceholder: '留空则使用归档名称',
+    active: '活跃',
+    model: '模型',
+    gateway: '网关',
+    alias: '别名',
+    provider: 'Provider',
+    path: '路径',
+    skills: '技能',
+    hasEnv: '有 .env',
+    hasSoulMd: '有 soul.md',
+    noProfiles: '暂无配置，创建一个开始吧。',
+  },
+
   // 日志
   logs: {
     title: '日志',