Fix bugs, add auto-refresh, quick-complete tasks, and every-N-day routines

- Fix bot auth: merge duplicate on_ready handlers so session restore runs (#13)
- Fix push notifications: pass Uint8Array directly as applicationServerKey (#6)
- Show specific conflict reason on schedule save instead of generic error (#17)
- Add inline checkmark button to complete tasks on routines timeline (#18)
- Add visibility-change + 60s polling auto-refresh to routines, meds, tasks (#15)
- Add every-N-day routine scheduling: schema, API, scheduler, and UI (#16)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

synculous-client/src/components/notifications/PushNotificationToggle.tsx

@@ -65,7 +65,7 @@ export default function PushNotificationToggle() {
         const { public_key } = await api.notifications.getVapidPublicKey();
         const sub = await reg.pushManager.subscribe({
           userVisibleOnly: true,
-          applicationServerKey: urlBase64ToUint8Array(public_key).buffer as ArrayBuffer,
+          applicationServerKey: urlBase64ToUint8Array(public_key) as BufferSource,
         });
 
         const subJson = sub.toJSON();