feat: ship v0.9.0 with pomodoro, achievements, and injection history

Add pomodoro timer with goal notifications, writing streak milestones, and knowledge injection logging with UI previews across AI writing flows.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/renderer/App.tsx

@@ -47,6 +47,12 @@ function AppInner(): React.JSX.Element {
     if (loaded && !onboardingCompleted) setShowOnboarding(true)
   }, [loaded, onboardingCompleted])
 
+  useEffect(() => {
+    return window.electronAPI.onGoalNotification((payload) => {
+      showToast(t(payload.messageKey, payload.messageParams))
+    })
+  }, [showToast, t])
+
   useEffect(() => {
     const openSearch = (): void => useSearchStore.getState().setOpen(true)
     const openLandmarks = (): void => useAppStore.getState().setLandmarksModalOpen(true)