feat: add Hermes UI components, presets, and config panels (Phase 8)

- Add 7 provider presets (OpenRouter, Anthropic, OpenAI, Google, DeepSeek, Together, Nous)
- Create HermesFormFields + useHermesFormState for provider form integration
- Create Model/Agent/Env config panels with save/load functionality
- Create HermesHealthBanner for config warnings
- Add hermes icon (violet winged H) to icon system
- Integrate into App.tsx: 3 new view types (hermesModel/hermesAgent/hermesEnv),
  sidebar buttons (Brain/Bot/KeyRound), health banner, session support
- Integrate into ProviderForm: presets, form state, key validation, rendering
- Integrate into AddProviderDialog: universal tab exclusion, providerKey, base_url extraction
- Add i18n keys for all Hermes UI (zh/en/ja)

src/hooks/useHermes.ts

@@ -50,22 +50,24 @@ export function useHermesModelConfig(enabled: boolean) {
 /**
  * Query agent configuration.
  */
-export function useHermesAgentConfig() {
+export function useHermesAgentConfig(enabled = true) {
   return useQuery({
     queryKey: hermesKeys.agentConfig,
     queryFn: () => hermesApi.getAgentConfig(),
     staleTime: 30_000,
+    enabled,
   });
 }
 
 /**
  * Query env configuration.
  */
-export function useHermesEnv() {
+export function useHermesEnv(enabled = true) {
   return useQuery({
     queryKey: hermesKeys.env,
     queryFn: () => hermesApi.getEnv(),
     staleTime: 30_000,
+    enabled,
   });
 }