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.kotlin.multiplatform.gradle.kts

@@ -0,0 +1,55 @@
+// build-logic/src/main/kotlin/recipe.kotlin.multiplatform.gradle.kts
+// Establishes the D-05 target matrix + JVM toolchain + common deps.
+// Android bytecode is JVM 11 (D-08); server + desktop + shared/jvm are JVM 21.
+
+import org.gradle.api.artifacts.VersionCatalogsExtension
+import org.gradle.kotlin.dsl.getByType
+import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+plugins {
+    id("org.jetbrains.kotlin.multiplatform")
+}
+
+val libs = extensions.getByType<VersionCatalogsExtension>().named("libs")
+
+kotlin {
+    jvmToolchain(21)
+
+    androidTarget {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_11)
+        }
+    }
+
+    listOf(iosArm64(), iosSimulatorArm64()).forEach { iosTarget ->
+        iosTarget.binaries.framework {
+            baseName = "ComposeApp"
+            isStatic = true
+        }
+    }
+
+    jvm {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_21)
+        }
+    }
+
+    @OptIn(ExperimentalWasmDsl::class)
+    wasmJs { browser() }
+
+    compilerOptions {
+        allWarningsAsErrors.set(true)
+    }
+
+    sourceSets {
+        commonMain.dependencies {
+            implementation(project.dependencies.platform(libs.findLibrary("koin-bom").get()))
+            implementation(libs.findLibrary("koin-core").get())
+            implementation(libs.findLibrary("kermit").get())
+        }
+        commonTest.dependencies {
+            implementation(libs.findLibrary("kotlin-test").get())
+        }
+    }
+}