rebrand: rename project from Dispensa Manager to EverShelf

- Update app name across all files (manifest, index.html, README, docs)
- Update contact email to evershelfproject@gmail.com
- Rename Docker service/container/volume to evershelf
- Rename localStorage keys: dispensa_* → evershelf_*
- Rename SQLite DB reference: dispensa.db → evershelf.db
- Update SSH remote to dadaloop82/EverShelf
- Update Apache conf file name to evershelf.conf
- Update CI workflow Docker image/container names
- Update cron job example path
- Add data/dispensa.db to .gitignore to prevent accidental commit

api/index.php

@@ -1,10 +1,10 @@
 <?php
 /**
- * Dispensa Manager - Main API Router
+ * EverShelf - Main API Router
  * Handles all CRUD operations for products, inventory, shopping lists,
  * AI-powered features (Gemini), and third-party integrations (Bring!, DupliClick).
  *
- * @author Stimpfl Daniel <dadaloop82@gmail.com>
+ * @author Stimpfl Daniel <evershelfproject@gmail.com>
  * @license MIT
  */