REPASO A1 v3 — FTP UPDATE

Target example:
  https://abdou.pro/a1/

Recommended update:
1. Export a progress backup from the current site first (optional but wise).
2. Upload the CONTENTS of this folder into /a1/ on the server.
3. You may overwrite the existing files. Browser progress is NOT stored in these files.
4. Keep HTTPS enabled.
5. Open https://abdou.pro/a1/ and refresh once.
6. If the installed PWA still shows the previous UI, close it completely and reopen it. A second refresh can also force the new service worker to take control.

LOCAL PROGRESS
- The storage key is intentionally unchanged: hl-final-review.
- Replacing HTML/CSS/JS files on FTP does not clear browser localStorage.
- v3 migrates the old past-pattern completion keys into the new pattern task keys.
- Export / Import / Merge / Replace are available under Progreso.

SAFE UPDATE FROM v2
v3 uses versioned asset names (app-v3.js, styles-v3.css, etc.). This avoids a stale v2 service worker serving old JavaScript or CSS to the new HTML during the first update.

NO SERVER REQUIREMENTS
No PHP, database, Node.js, build command or account system is needed.
