feat(01-02): scaffold build-logic included build with 5 precompiled plugins

- build-logic/settings.gradle.kts resolves parent catalog via files("../gradle/libs.versions.toml")
- build-logic/build.gradle.kts declares kotlin-dsl + 9 compileOnly asDependency entries
- recipe.quality: Spotless + ktlint + D-11 allWarningsAsErrors safety net (plugins.withId guard)
- recipe.kotlin.multiplatform: D-05 target matrix (androidTarget, iosArm64, iosSimulatorArm64, jvm, wasmJs) + JVM 11/21 split + baseName "ComposeApp" + Koin/Kermit/kotlin-test deps
- recipe.compose.multiplatform: layers on recipe.kotlin.multiplatform (PITFALL #2 avoided) + hot-reload + Compose deps
- recipe.android.application: namespace dev.ulfrx.recipe + findVersion catalog accessor (PITFALL #1)
- recipe.jvm.server: Ktor + Flyway + Postgres with quoted "implementation" configs + cleanDisabled guard

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(true)
+        }
+    }
+}
+plugins.withId("org.jetbrains.kotlin.jvm") {
+    tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask<*>>().configureEach {
+        compilerOptions {
+            allWarningsAsErrors.set(true)
+        }
+    }
+}