feat: AI terminal, Z.AI quota, /model change, formatting fixes, update redirects

- Add dedicated AI Terminal tab (non-deletable) shared between user and AI
- Add Z.AI quota display on dashboard via /api/monitor/usage/quota/limit
- Add /model change command in Studio to toggle MiniMax/ZAI
- Apply Studio formatting (formatText, renderContent) to Shell AI messages
- Add render tick refresh for Shell (1s streaming, 5s idle)
- Add analysis viewer modal (Eye button) in Shell panel
- Fix multi-shell tab creation with retry init and settings ref
- Persist shell tabs to localStorage
- Fix line spacing in Studio (line-height 1.7→1.5, cleanup stray <br/>)
- Redirect Config updates to AI terminal via custom events
- Fix CI: delete existing release before recreating
- Bump version to 0.3.4

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

web/src/components/App.jsx

@@ -76,6 +76,12 @@ export default function App() {
 
   const switchTab = useCallback((tabId) => setActiveTab(tabId), [])
 
+  useEffect(() => {
+    const handler = () => setActiveTab('shell')
+    window.addEventListener('navigate-to-shell', handler)
+    return () => window.removeEventListener('navigate-to-shell', handler)
+  }, [])
+
   const hasUpdates = updates.some(u => u.needsUpdate)
   const installed = tools.filter(tool => tool.installed).length