feat: split settings into LLMs and API Keys tabs, fix keychain vault and Ollama UX

- Split settings window into 3 tabs: LLMs (Ollama/Groq/OpenRouter),
  API Keys (data feeds), and Debug & Logs
- Add featureFilter option to RuntimeConfigPanel for rendering subsets
- Consolidate keychain to single JSON vault entry (1 macOS prompt vs 20)
- Add Ollama model discovery with /api/tags + /v1/models fallback
- Strip <think> reasoning tokens from Ollama responses
- Suppress thinking with think:false in Ollama request body
- Parallel secret verification with 15s global timeout
- Fix manual model input overlapping dropdown (CSS grid-area + hidden-input class)
- Add loading spinners to settings tab panels
- Suppress notification popups when settings window is open
- Filter embed models from Ollama dropdown
- Fix settings window black screen flash with inline dark background

src-tauri/sidecar/local-api-server.mjs

@@ -872,7 +872,8 @@ export async function createLocalApiServer(options = {}) {
     }
 
     const start = Date.now();
-    const skipRecord = requestUrl.pathname === '/api/local-traffic-log'
+    const skipRecord = req.method === 'OPTIONS'
+      || requestUrl.pathname === '/api/local-traffic-log'
       || requestUrl.pathname === '/api/local-debug-toggle'
       || requestUrl.pathname === '/api/local-env-update'
       || requestUrl.pathname === '/api/local-validate-secret';