fix: add missing /api/logs route, remove debug logging

- Copy /api/logs route from main repo (was never synced)
- Remove debug console.log statements

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/layout/ThreePanelLayout.tsx

@@ -115,12 +115,10 @@ export default function ThreePanelLayout() {
   // Listen for settings:open events (from LocalKeyGate)
   useEffect(() => {
     const handleSettingsOpen = (e: CustomEvent<{ tab?: SettingsTab }>) => {
-      console.log('[ThreePanelLayout] settings:open event received', e.detail);
       setSettingsInitialTab(e.detail?.tab || 'apikeys');
       setShowSettings(true);
     };
     window.addEventListener('settings:open', handleSettingsOpen as EventListener);
-    console.log('[ThreePanelLayout] settings:open listener registered');
     return () => window.removeEventListener('settings:open', handleSettingsOpen as EventListener);
   }, []);