Major PWA and mobile UI improvements

- Fixed PWA installation on Android by correcting manifest.json icon configuration
- Made UI mobile-friendly with compact layout and sticky record button
- Implemented auto-translation after transcription stops
- Updated branding from 'Voice Translator' to 'Talk2Me' throughout
- Added reverse proxy support with ProxyFix middleware
- Created diagnostic tools for PWA troubleshooting
- Added proper HTTP headers for service worker and manifest
- Improved mobile CSS with responsive design
- Fixed JavaScript bundling with webpack configuration
- Updated service worker cache versioning
- Added comprehensive PWA documentation

These changes ensure the app works properly as a PWA on Android devices
and provides a better mobile user experience.

webpack.config.js

@@ -0,0 +1,23 @@
+const path = require('path');
+
+module.exports = {
+  entry: './static/js/src/app.ts',
+  module: {
+    rules: [
+      {
+        test: /\.tsx?$/,
+        use: 'ts-loader',
+        exclude: /node_modules/,
+      },
+    ],
+  },
+  resolve: {
+    extensions: ['.tsx', '.ts', '.js'],
+  },
+  output: {
+    filename: 'app.bundle.js',
+    path: path.resolve(__dirname, 'static/js/dist'),
+  },
+  mode: 'production',
+  devtool: 'source-map',
+};