Fix authentication state consistency across components

- Fix ChatInterface to use context's reactive isAuthenticated value
- Fix useAgentLoop to use context's reactive isAuthenticated value
- Ensure consistent authentication state checking across the application
- Add isAuthenticated to useCallback dependencies for proper reactivity

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

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

src/components/ChatInterface.tsx

@@ -16,7 +16,7 @@ export function ChatInterface() {
     getAgentLoopState,
   } = useConversation();
   
-  const { currentProvider } = useInference();
+  const { provider: currentProvider, isAuthenticated } = useInference();
   const [isLoading, setIsLoading] = useState(false);
   const messagesEndRef = useRef<HTMLDivElement>(null);
 

src/hooks/useAgentLoop.ts

@@ -126,7 +126,7 @@ const DEFAULT_CONFIG: AgentLoopConfig = {
 
 export function useAgentLoop(config: Partial<AgentLoopConfig> = {}): UseAgentLoopReturn {
   const finalConfig = { ...DEFAULT_CONFIG, ...config };
-  const { currentProvider } = useInference();
+  const { provider: currentProvider, isAuthenticated } = useInference();
   const { getAllTools, callTool: callMCPTool, connections } = useMCP();
   
   // Track running loops
@@ -255,7 +255,7 @@ export function useAgentLoop(config: Partial<AgentLoopConfig> = {}): UseAgentLoo
     conversation: Conversation,
     onUpdate: (conversation: Conversation) => void
   ) => {
-    if (!currentProvider?.isAuthenticated) {
+    if (!isAuthenticated || !currentProvider) {
       throw new Error('No authenticated inference provider available');
     }
 
@@ -397,7 +397,7 @@ export function useAgentLoop(config: Partial<AgentLoopConfig> = {}): UseAgentLoo
     } finally {
       loopStates.current.delete(conversationId);
     }
-  }, [currentProvider, finalConfig, toInferenceMessages, fromInferenceResponse, getAllTools, executeTool]);
+  }, [isAuthenticated, currentProvider, finalConfig, toInferenceMessages, fromInferenceResponse, getAllTools, executeTool]);
 
   const stopLoop = useCallback((conversationId: string) => {
     const loopState = loopStates.current.get(conversationId);