ELIXIR SKIN PREMIUM v2.2 - SAFE UPDATE

1. Back up current website files and database.
2. Upload this ZIP into the existing elixirskin.lk document root.
3. Extract and overwrite/merge the included files.
4. Login to Elixir website admin.
5. Open: https://elixirskin.lk/update-v2.2.php
6. Confirm green success messages.
7. Delete update-v2.2.php after testing.

IMPORTANT
- No manual SQL import is required.
- Existing appointment requests, treatments, products, offers and settings are preserved.
- The API exposes only website booking request fields and status operations.
- Automatic WhatsApp delivery requires WhatsApp Business API/gateway credentials. The two target numbers are configured and logged as gateway_pending until a gateway is connected.
