Migrate UI to Jetpack Compose with Material 3 design

- Replace XML layouts with Compose screens for all 5 Activities
- Implement Material 3 theme with Google Blue/Green color scheme matching app icon
- Add device-aware navigation with bottom tabs for Samsung devices
- Remove action bar for modern edge-to-edge UI design
- Update Kotlin to 1.9.22 for Compose Compiler compatibility
- Add Compose dependencies and configure build system
- Implement MainViewModel for upload state management
- Create reusable dialog components for upload parameters and results
- Preserve all existing Java controllers and services (UI-only migration)

app/build.gradle

@@ -39,6 +39,14 @@ android {
             languageVersion.set(JavaLanguageVersion.of(17))
         }
     }
+
+    buildFeatures {
+        compose = true
+    }
+
+    composeOptions {
+        kotlinCompilerExtensionVersion = '1.5.8'
+    }
 }
 
 dependencies {
@@ -77,6 +85,23 @@ dependencies {
     // Coroutines
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3"
 
+    // Jetpack Compose
+    def composeBom = platform('androidx.compose:compose-bom:2024.12.01')
+    implementation composeBom
+    implementation 'androidx.compose.ui:ui'
+    implementation 'androidx.compose.ui:ui-tooling-preview'
+    implementation 'androidx.compose.material3:material3'
+    implementation 'androidx.compose.material:material-icons-extended'
+    implementation 'androidx.activity:activity-compose:1.9.3'
+    implementation 'androidx.navigation:navigation-compose:2.8.5'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:2.8.7'
+    implementation 'androidx.lifecycle:lifecycle-runtime-compose:2.8.7'
+    implementation 'androidx.compose.runtime:runtime-livedata'
+
+    // Compose Debug
+    debugImplementation 'androidx.compose.ui:ui-tooling'
+    debugImplementation 'androidx.compose.ui:ui-test-manifest'
+
     // Testing
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'