refactor(hermes): delegate deep config to Hermes Web UI

Slim the Hermes surface in CC Switch to match its core positioning —
cross-client provider switching and shared MCP/prompts/skills — and
delegate deep configuration (model, agent, env, skills, cron, logs)
to the Hermes Web UI at http://127.0.0.1:9119.

- Drop AgentPanel/EnvPanel/ModelPanel and their mutation commands,
  hooks, types, and i18n keys across zh/en/ja.
- Add open_hermes_web_ui Tauri command that probes /api/status and
  launches the URL in the system browser. Hermes injects its own
  session token into the returned HTML, so CC Switch doesn't need
  to touch auth.
- Surface the launcher from the Hermes toolbar and the health banner
  via a shared useOpenHermesWebUI() hook; the offline error code is
  defined once per side and referenced across the contract.
- Keep read-only access to model.provider so ProviderList can still
  highlight the active supplier; apply_switch_defaults continues to
  write the top-level model section when switching providers.

Net diff: +152 / -1253.

src/types.ts

@@ -587,18 +587,6 @@ export interface HermesModelConfig {
   [key: string]: unknown;
 }
 
-export interface HermesAgentConfig {
-  max_turns?: number;
-  reasoning_effort?: string;
-  tool_use_enforcement?: string | boolean | string[];
-  approvals_mode?: string;
-  [key: string]: unknown;
-}
-
-export interface HermesEnvConfig {
-  [key: string]: unknown;
-}
-
 export interface HermesHealthWarning {
   code: string;
   message: string;