Adds support for scheduled browser tabs for select upcoming releases, along with reliability and compatibility improvements.

Version 0.1.2
- Added a freshness check that prevents expired alerts from opening old store tabs.
- Improved reconnect behavior while a queue is still active.
- No new permissions or data collection changes.

0.1.1 (2026-07-15)
- Fixed: a live alert arriving when the browser had zero open windows failed
silently. The extension now falls back to windows.create and opens the store
page in a new window.
- Fixed: a failed tab open now releases the drop key, so a retry or replay can
still open the page instead of being treated as already handled.
- No permission changes. No protocol changes.