Wire project infrastructure

build-logic/src/main/kotlin/recipe.quality.gradle.kts

@@ -0,0 +1,40 @@
+plugins {
+    id("com.diffplug.spotless")
+}
+
+spotless {
+    kotlin {
+        target("src/**/*.kt")
+        targetExclude("**/build/**", "**/generated/**")
+        ktlint()
+    }
+    kotlinGradle {
+        target("*.gradle.kts")
+        ktlint()
+    }
+    format("markdown") {
+        target("*.md", "docs/**/*.md")
+        endWithNewline()
+        trimTrailingWhitespace()
+    }
+}
+
+// D-11 redundancy guard: if a module applies recipe.quality alongside a Kotlin plugin
+// (multiplatform or jvm), ensure allWarningsAsErrors still applies even if the module
+// build didn't already configure it. Guarded with plugins.withId so this plugin is
+// safely composable even when applied alone (no KotlinCompilationTask type available
+// on the classpath until a Kotlin plugin is present).
+plugins.withId("org.jetbrains.kotlin.multiplatform") {
+    tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask<*>>().configureEach {
+        compilerOptions {
+            allWarningsAsErrors.set(!name.endsWith("KotlinMetadata"))
+        }
+    }
+}
+plugins.withId("org.jetbrains.kotlin.jvm") {
+    tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask<*>>().configureEach {
+        compilerOptions {
+            allWarningsAsErrors.set(true)
+        }
+    }
+}