WATranslate v4.4.2 — Desktop Menu Button

CHANGE REQUEST
Desktop/web should use a menu button for Logout, like the mobile UI.

WHAT CHANGES

Desktop / web:
- Language selector remains visible.
- Separate "Log out" button is hidden.
- Three-dot (...) menu button appears beside the language selector.
- Clicking the menu shows "Log out".
- The menu uses the active EN / RU / DE / ES interface language.

Mobile:
- No behavior change.
- Existing mobile menu remains as before.

NO BACKEND CHANGE
No changes to:
- public/api.php
- public/webhook.php
- config.php
- database
- Google
- Meta
- translation logic
- chat logic

FILES TO OVERWRITE
public/index.php
assets/ui-language-v4.4.css
public/assets/ui-language-v4.4.css
service-worker.js

INSTALL
1. Upload ZIP to:
   public_html/whatsapp-server-translator/
2. Extract and overwrite.
3. Desktop: hard refresh.
4. Installed iPhone PWA: no functional mobile change, but closing/reopening is safe.

NO SQL REQUIRED.
