Mobile users were being blocked by a deep-linking page prompting them to
download the Jitsi Meet app. Since this is a self-hosted instance with no
native app, disable deep-linking so users join directly in the browser.
- Set deeplinking.disabled: true in config.js
- Set MOBILE_APP_PROMO: false in interface_config.js
- Fix mobile header background to match purple theme
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>