fix(mobile): enable mobile browser support by disabling deep-linking

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>

config.js

@@ -1283,54 +1283,11 @@ var config = {
     // use only.
     // _desktopSharingSourceDevice: 'sample-id-or-label',
 
-    // DEPRECATED! Use deeplinking.disabled instead.
-    // If true, any checks to handoff to another application will be prevented
-    // and instead the app will continue to display in the current browser.
-    // disableDeepLinking: false,
-
-    // The deeplinking config.
-    // deeplinking: {
-    //
-    //     // The desktop deeplinking config, disabled by default.
-    //     desktop: {
-    //         appName: 'Jitsi Meet',
-    //         appScheme: 'jitsi-meet,
-    //         download: {
-    //             linux:
-    //               'https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet-x86_64.AppImage',
-    //             macos: 'https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.dmg',
-    //             windows: 'https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.exe'
-    //         },
-    //         enabled: false
-    //     },
-    //     // If true, any checks to handoff to another application will be prevented
-    //     // and instead the app will continue to display in the current browser.
-    //     disabled: false,
-
-    //     // whether to hide the logo on the deep linking pages.
-    //     hideLogo: false,
-
-    //     // The ios deeplinking config.
-    //     ios: {
-    //         appName: 'Jitsi Meet',
-    //         // Specify mobile app scheme for opening the app from the mobile browser.
-    //         appScheme: 'org.jitsi.meet',
-    //         // Custom URL for downloading ios mobile app.
-    //         downloadLink: 'https://itunes.apple.com/us/app/jitsi-meet/id1165103905',
-    //     },
-
-    //     // The android deeplinking config.
-    //     android: {
-    //         appName: 'Jitsi Meet',
-    //         // Specify mobile app scheme for opening the app from the mobile browser.
-    //         appScheme: 'org.jitsi.meet',
-    //         // Custom URL for downloading android mobile app.
-    //         downloadLink: 'https://play.google.com/store/apps/details?id=org.jitsi.meet',
-    //         // Android app package name.
-    //         appPackage: 'org.jitsi.meet',
-    //         fDroidUrl: 'https://f-droid.org/en/packages/org.jitsi.meet/',
-    //     }
-    // },
+    // Disable deep linking - users should join directly in the mobile browser
+    // for self-hosted Jeffsi Meet (no native app available)
+    deeplinking: {
+        disabled: true
+    },
 
     // // The terms, privacy and help centre URL's.
     // legalUrls: {

css/_responsive.scss

@@ -12,7 +12,7 @@
         }
 
         .header {
-            background-color: #002637;
+            background-color: #1e1040;
 
             .insecure-room-name-warning {
                 width: 100%;

interface_config.js

@@ -91,7 +91,7 @@ var interfaceConfig = {
      *
      * @type {boolean}
      */
-    MOBILE_APP_PROMO: true,
+    MOBILE_APP_PROMO: false,
 
     // Names of browsers which should show a warning stating the current browser
     // has a suboptimal experience. Browsers which are not listed as optimal or