fix(openclaw): address code review findings across P0-P3 issues

- Add 25 missing i18n keys for OpenClawFormFields in all 3 locales (P0)
- Replace key={index} with stable crypto.randomUUID() keys in EnvPanel,
  ToolsPanel, and OpenClawFormFields to prevent list state bugs (P1)
- Exclude openclaw from ProxyToggle/FailoverToggle in App.tsx (P1)
- Add merge_additive_config() for openclaw/opencode deep link imports (P1)
- Normalize serde(flatten) field naming to `extra` + HashMap (P2)
- Add directory existence check in remove_openclaw_provider_from_live (P2)
- Remove dead code in import_default_config and openclaw API methods (P2)
- Add duplicate key validation in EnvPanel before save (P2)
- Add openclawConfigDir to Settings type (P2)
- Add staleTime to OpenClaw query hooks (P3)
- Fix type-unsafe delete via destructuring in mutations.ts (P3)

src/lib/api/openclaw.ts

@@ -67,24 +67,6 @@ export const openclawApi = {
     return await invoke("set_openclaw_agents_defaults", { defaults });
   },
 
-  // ============================================================
-  // Provider Import
-  // ============================================================
-
-  /**
-   * Import providers from live config (openclaw.json) to database
-   */
-  async importProvidersFromLive(): Promise<number> {
-    return await invoke("import_openclaw_providers_from_live");
-  },
-
-  /**
-   * Get provider IDs that exist in live config (openclaw.json)
-   */
-  async getLiveProviderIds(): Promise<string[]> {
-    return await invoke("get_openclaw_live_provider_ids");
-  },
-
   // ============================================================
   // Env Configuration
   // ============================================================