Desktop player on mpv: floating window, system integration

playback/engine-mpv/build.gradle.kts

@@ -0,0 +1,21 @@
+// The desktop's playback engine (LINUX_PLAN.md §2.3): libmpv through JNA, video drawn offscreen and shown in Compose.
+plugins {
+    alias(libs.plugins.kotlin.jvm)
+    alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.compose.multiplatform)
+}
+
+kotlin { jvmToolchain(21) }
+
+dependencies {
+    implementation(project(":playback:api"))
+    implementation(project(":playback:core"))
+    implementation(project(":core:common"))
+    implementation(compose.runtime)
+    implementation(compose.foundation)
+    implementation(compose.ui)
+    implementation(libs.jna)
+    implementation(libs.koin.core)
+
+    testImplementation(libs.junit)
+}