feat: optimize multi-agent routing and enhance intent detection

src/sidebarProvider.ts

@@ -2428,11 +2428,16 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
             internetEnabled = !internetEnabled; document.getElementById('internetBtn').classList.toggle('active', internetEnabled);
         };
 
-        let multiAgentEnabled = true;
+        let multiAgentEnabled = false;
+        const setMultiAgentUi = (enabled) => {
+            multiAgentEnabled = enabled;
+            const btn = document.getElementById('multiAgentBtn');
+            btn.classList.toggle('active', enabled);
+            btn.setAttribute('data-tooltip', enabled ? 'Multi-Agent Mode: On' : 'Multi-Agent Mode: Off');
+        };
         document.getElementById('multiAgentBtn').onclick = () => {
-            multiAgentEnabled = !multiAgentEnabled;
+            setMultiAgentUi(!multiAgentEnabled);
             vscode.postMessage({ type: 'toggleMultiAgent', value: multiAgentEnabled });
-            document.getElementById('multiAgentBtn').classList.toggle('active', multiAgentEnabled);
         };
 
         const syncBrain = () => { Sound.play(550, 'sine', 0.1); vscode.postMessage({ type: 'syncBrain' }); };
@@ -2483,8 +2488,7 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
         window.addEventListener('message', e => {
             const msg = e.data;
             if (msg.type === 'configUpdate') {
-                multiAgentEnabled = msg.value.multiAgentEnabled;
-                document.getElementById('multiAgentBtn').classList.toggle('active', multiAgentEnabled);
+                setMultiAgentUi(!!msg.value.multiAgentEnabled);
             }
         });