chore(release): 0.4.1 (#28)

## Summary
Bump the version to 0.4.1: background notifications fix (storage permission), focus-on-open fixes, shortcuts for every screen control.

## Testing
- Lint, typecheck, unit tests and build pass.

Author: ttncode

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "boost-focus-timer",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "private": true,
   "description": "A calm focus timer with to-dos, habits, goals and session history. Runs in the browser or as a browser extension; all data stays local.",
   "author": "ttncode",