feat(opencode): Phase 7 - Frontend TypeScript type definitions

- Add "opencode" to AppId type in lib/api/types.ts
- Extend McpApps interface with opencode field in types.ts
- Add OpenCode-specific types: OpenCodeModel, OpenCodeProviderOptions,
  OpenCodeProviderConfig, OpenCodeMcpServerSpec
- Add opencodeConfigDir to Settings interface
- Add importOpenCodeFromLive() to providersApi
- Fix type errors across components:
  - AppSwitcher: add opencode to icon/name mappings
  - McpFormModal: add opencode to enabledApps state
  - PromptFormModal/Panel: add opencode filename mapping
  - EndpointSpeedTest: add opencode timeout config
  - useBaseUrlState: add opencode to appType union
  - ProxyToggle: add opencode label
  - App.tsx: handle opencode fallback for SkillsPage
- Update ProxyTakeoverStatus with opencode field (always false)
- Fix test mocks in tests/msw/state.ts

src/lib/api/providers.ts

@@ -74,6 +74,14 @@ export const providersApi = {
   async openTerminal(providerId: string, appId: AppId): Promise<boolean> {
     return await invoke("open_provider_terminal", { providerId, app: appId });
   },
+
+  /**
+   * 从 OpenCode live 配置导入供应商到数据库
+   * OpenCode 特有功能：由于累加模式，用户可能已在 opencode.json 中配置供应商
+   */
+  async importOpenCodeFromLive(): Promise<number> {
+    return await invoke("import_opencode_providers_from_live");
+  },
 };
 
 // ============================================================================

src/lib/api/types.ts

@@ -1,2 +1,2 @@
 // 前端统一使用 AppId 作为应用标识（与后端命令参数 `app` 一致）
-export type AppId = "claude" | "codex" | "gemini"; // 新增 gemini
+export type AppId = "claude" | "codex" | "gemini" | "opencode";