feat: add Hermes frontend types, API layer, and hooks (Phase 7)

- Add "hermes" to AppId union type and all exhaustive Record<AppId>
- Add HermesModelConfig, HermesAgentConfig, HermesEnvConfig types
- Add hermes field to VisibleApps, McpApps, ProxyTakeoverStatus
- Create src/lib/api/hermes.ts with Tauri invoke wrappers
- Create src/hooks/useHermes.ts with 5 query + 3 mutation hooks
- Register hermes in APP_IDS, APP_ICON_MAP (violet color scheme)
- Split MCP_SKILLS_APP_IDS into MCP_APP_IDS (includes hermes) and
  SKILLS_APP_IDS (excludes hermes, since Hermes has no Skills support)
- Wire hermes additive-mode into App.tsx (remove/duplicate handlers),
  ProviderList.tsx (live provider ID query + In Config badge),
  mutations.ts (cache invalidation on switch/add/delete)
- Add Hermes checkbox to McpFormModal
- Add basic hermes i18n keys (en/zh/ja)

src/types.ts

@@ -188,6 +188,7 @@ export interface VisibleApps {
   gemini: boolean;
   opencode: boolean;
   openclaw: boolean;
+  hermes: boolean;
 }
 
 // WebDAV 同步状态
@@ -281,6 +282,8 @@ export interface Settings {
   opencodeConfigDir?: string;
   // 覆盖 OpenClaw 配置目录（可选）
   openclawConfigDir?: string;
+  // 覆盖 Hermes 配置目录（可选）
+  hermesConfigDir?: string;
 
   // ===== 当前供应商 ID（设备级）=====
   // 当前 Claude 供应商 ID（优先于数据库 is_current）
@@ -354,6 +357,7 @@ export interface McpApps {
   gemini: boolean;
   opencode: boolean;
   openclaw: boolean;
+  hermes: boolean;
 }
 
 // MCP 服务器条目（v3.7.0 统一结构）
@@ -569,3 +573,38 @@ export interface OpenClawToolsConfig {
   deny?: string[];
   [key: string]: unknown; // preserve unknown fields
 }
+
+// ============================================================================
+// Hermes Agent 专属配置
+// ============================================================================
+
+export interface HermesModelConfig {
+  default?: string;
+  provider?: string;
+  base_url?: string;
+  context_length?: number;
+  max_tokens?: number;
+  [key: string]: unknown;
+}
+
+export interface HermesAgentConfig {
+  max_turns?: number;
+  reasoning_effort?: string;
+  tool_use_enforcement?: string | boolean | string[];
+  [key: string]: unknown;
+}
+
+export interface HermesEnvConfig {
+  [key: string]: unknown;
+}
+
+export interface HermesHealthWarning {
+  code: string;
+  message: string;
+  path?: string;
+}
+
+export interface HermesWriteOutcome {
+  backupPath?: string;
+  warnings: HermesHealthWarning[];
+}