Add JavaFX module args and auto-detect mac/mac-aarch64 platform

--add-modules javafx.media,javafx.swing,javafx.graphics needed for
native codec loading on macOS (AVFoundation for MOV playback).
Platform auto-detects mac-aarch64 vs mac based on os.arch.

build.gradle.kts

@@ -33,19 +33,31 @@ dependencies {
     implementation(libs.logback.classic)
 
     // JavaFX media for Live Photo video playback in preview dialog
-    // Using OpenJFX which works with both Corretto and other JDK distributions
     val javafxVersion = "21.0.3"
-    val javafxPlatform = "mac"  // mac, mac-aarch64, win, linux
+    // Detect platform: mac-aarch64 for Apple Silicon, mac for Intel
+    val osArch = System.getProperty("os.arch") ?: "x86_64"
+    val javafxPlatform = when {
+        System.getProperty("os.name").contains("Mac", ignoreCase = true) && osArch.contains("aarch64") -> "mac-aarch64"
+        System.getProperty("os.name").contains("Mac", ignoreCase = true) -> "mac"
+        System.getProperty("os.name").contains("Win", ignoreCase = true) -> "win"
+        else -> "linux"
+    }
     implementation("org.openjfx:javafx-media:$javafxVersion:$javafxPlatform")
     implementation("org.openjfx:javafx-swing:$javafxVersion:$javafxPlatform")
     implementation("org.openjfx:javafx-graphics:$javafxVersion:$javafxPlatform")
     implementation("org.openjfx:javafx-base:$javafxVersion:$javafxPlatform")
+    implementation("org.openjfx:javafx-controls:$javafxVersion:$javafxPlatform")
 }
 
 compose.desktop {
     application {
         mainClass = "com.bolenpad.photophetch.MainKt"
 
+        jvmArgs(
+            "--add-modules", "javafx.media,javafx.swing,javafx.graphics",
+            "--add-opens", "javafx.graphics/com.sun.javafx.application=ALL-UNNAMED",
+        )
+
         nativeDistributions {
             targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb)
             packageName = "PhotoPhetch"