revert: Remove debugging infrastructure while keeping bug fixes

Removed:
- ErrorBoundary component and all error boundary wrapping
- Debug console.log statements from useReasoningTranslation
- Debug useEffect in DashboardPage
- Dev mode Dockerfile (Dockerfile.kubernetes.dev)
- Dev mode Tilt configuration
- Enhanced vite watcher config (depth, awaitWriteFinish, HMR overlay)

Kept actual bug fixes:
- String() coercion in translation functions
- useMemo/useCallback for formatters
- Null guards in components
- Basic vite ignored patterns (node_modules, dist, .git)
- Conditional rendering in DashboardPage

Tiltfile

@@ -48,25 +48,13 @@ def python_live_update(service_name, service_path):
 # =============================================================================
 # FRONTEND (React + Vite)
 # =============================================================================
-# DEV MODE: Uses Vite dev server with hot reload and unminified React
-# PROD MODE: Change dockerfile to './frontend/Dockerfile.kubernetes' for production builds
 docker_build(
     'bakery/dashboard',
     context='./frontend',
-    dockerfile='./frontend/Dockerfile.kubernetes.dev',  # DEV: Vite dev server
+    dockerfile='./frontend/Dockerfile.kubernetes',
     live_update=[
-        # Fall back to full rebuild if package.json changes
-        fall_back_on(['./frontend/package.json', './frontend/package-lock.json']),
-
-        # Sync source code changes - Vite will hot reload
         sync('./frontend/src', '/app/src'),
         sync('./frontend/public', '/app/public'),
-        sync('./frontend/index.html', '/app/index.html'),
-        sync('./frontend/vite.config.ts', '/app/vite.config.ts'),
-        sync('./frontend/tsconfig.json', '/app/tsconfig.json'),
-
-        # Reinstall dependencies if package.json changes
-        run('npm ci', trigger=['./frontend/package.json', './frontend/package-lock.json']),
     ]
 )