fix(stores): align RPC methods with OpenClaw protocol and fix chat flow

- Fix channels store: use channels.status instead of channels.list
- Fix skills store: use skills.status instead of skills.list
- Fix chat store: correct chat.history response parsing (messages in payload)
- Fix chat store: handle chat.send async flow (ack + event streaming)
- Add chat event handling for streaming AI responses (delta/final/error)
- Wire gateway:chat-message IPC events to chat store
- Fix health check: use WebSocket status instead of nonexistent /health endpoint
- Fix waitForReady: probe via WebSocket instead of HTTP
- Gracefully degrade when methods are unsupported (no white screen)

src/stores/gateway.ts

@@ -58,7 +58,17 @@ export const useGatewayStore = create<GatewayState>((set, get) => ({
       // Listen for notifications
       window.electron.ipcRenderer.on('gateway:notification', (notification) => {
         console.log('Gateway notification:', notification);
-        // Could dispatch to other stores based on notification type
+      });
+      
+      // Listen for chat events from the gateway and forward to chat store
+      window.electron.ipcRenderer.on('gateway:chat-message', (data) => {
+        const { useChatStore } = require('./chat');
+        const chatData = data as { message?: Record<string, unknown> } | Record<string, unknown>;
+        // The event payload may be nested under 'message' or directly on data
+        const event = ('message' in chatData && typeof chatData.message === 'object') 
+          ? chatData.message as Record<string, unknown>
+          : chatData as Record<string, unknown>;
+        useChatStore.getState().handleChatEvent(event);
       });
       
     } catch (error) {