feat: scaffold gallery_kt via init_kotlin_app

settings.gradle.kts

@@ -0,0 +1,23 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+rootProject.name = "gallery_kt"
+include(":app")
+
+// Composite build: FnTheme + FnTokens desde el registry
+includeBuild("../../kotlin/functions/ui") {
+    dependencySubstitution {
+        substitute(module("fn.compose:ui")).using(project(":"))
+    }
+}