Remove the retired ModelCompiler object in migrate; bump Testcontainers to 2.0.5

.agents/tasks/testcontainers-2.md

@@ -0,0 +1,49 @@
+---
+slug: testcontainers-2
+branch: master
+owner: claude
+status: in-review
+started: 2026-08-05
+---
+
+## Goal
+
+`Testcontainers.kt` in `buildSrc` pins `2.0.5` with the 2.x artifact names,
+so config floats stop reverting consumers that already upgraded
+(gcloud-jvm PR #202) and stop breaking their Testcontainers-2.x-based sources.
+
+## Context
+
+- Testcontainers 2.x renamed every module artifact with the `testcontainers-`
+  prefix; only the core library keeps the plain `testcontainers` name.
+  Verified on Maven Central at 2.0.5: `junit-jupiter`, `gcloud`, and `mysql`
+  return 404, while `testcontainers-junit-jupiter`, `testcontainers-gcloud`,
+  `testcontainers-mysql`, and `testcontainers-postgresql` exist.
+- gcloud-jvm already pins 2.0.5 locally (its PR #202); every `Update config`
+  commit reverts the pin and breaks `testlib` (`EmulatorContainer`).
+- jdbc-storage's local `buildSrc` copy adds a `postgresql` constant used by
+  `rdbms/build.gradle.kts`; config's copy must carry it, or the next float
+  breaks that build script with an unresolved reference.
+
+## Plan
+
+- [x] Bump `version` to `2.0.5`; rename module artifacts to the 2.x names.
+- [x] Add the `postgresql` constant so config's copy is a superset of
+      consumer usages (gcloud-jvm and jdbc-storage).
+- [x] Compile config's `buildSrc`.
+- [x] Sync gcloud-jvm's `buildSrc` copy to the canonical file; compile there.
+- [x] Run `dependency-audit` on the diff.
+
+## Log
+
+- 2026-08-05 — started; scope prescribed by the user request. Commit and
+  push are left to the human — changes are staged only.
+- 2026-08-05 — committed and pushed by the human's request as part of
+  PR #740, alongside the `migrate` `ModelCompiler` removal.
+- 2026-08-05 — done and verified: config `./gradlew help` OK;
+  gcloud-jvm `:testlib:classes` OK against the synced canonical file
+  (byte-identical, so the next float is a no-op there);
+  `dependency-audit` verdict APPROVE, no findings.
+  jdbc-storage build scripts keep compiling (all referenced constants
+  present); its test sources still target the 1.x API and need their own
+  2.x migration when the float lands.

buildSrc/src/main/kotlin/io/spine/dependency/test/Testcontainers.kt

@@ -33,12 +33,15 @@ package io.spine.dependency.test
  * The modules below are versioned and released together, so a single [version] applies to all
  * of them.
  *
+ * Starting with version 2.x, module artifacts are prefixed with `testcontainers-`,
+ * while the core [lib] artifact keeps the plain `testcontainers` name.
+ *
  * @see <a href="https://github.com/testcontainers/testcontainers-java">
  *     Testcontainers for Java at GitHub</a>
  */
 @Suppress("unused", "ConstPropertyName")
 object Testcontainers {
-    private const val version = "1.21.4"
+    private const val version = "2.0.5"
     private const val group = "org.testcontainers"
 
     /**
@@ -49,15 +52,20 @@ object Testcontainers {
     /**
      * The JUnit 5 (Jupiter) integration.
      */
-    const val junitJupiter = "$group:junit-jupiter:$version"
+    const val junitJupiter = "$group:testcontainers-junit-jupiter:$version"
 
     /**
      * The Google Cloud (GCP) emulator container support.
      */
-    const val gcloud = "$group:gcloud:$version"
+    const val gcloud = "$group:testcontainers-gcloud:$version"
 
     /**
      * The MySQL container support.
      */
-    const val mySql = "$group:mysql:$version"
+    const val mySql = "$group:testcontainers-mysql:$version"
+
+    /**
+     * The PostgreSQL container support.
+     */
+    const val postgresql = "$group:testcontainers-postgresql:$version"
 }

migrate

@@ -328,9 +328,11 @@ if [ "$IS_JVM" = "true" ]; then
     # overlays the current sources but never deletes files dropped from `config`,
     # so a consumer that received these earlier keeps a stale copy that no longer
     # compiles against the rest of `buildSrc`. ProtoData was superseded by Spine
-    # Compiler (`io.spine.compiler`); McJava by CoreJvm Compiler (`io.spine.core-jvm`).
-    echo "Removing retired dependency objects (ProtoData, McJava)"
+    # Compiler (`io.spine.compiler`); Model Compiler by McJava, and McJava in turn
+    # by CoreJvm Compiler (`io.spine.core-jvm`).
+    echo "Removing retired dependency objects (ProtoData, ModelCompiler, McJava)"
     rm -f ../buildSrc/src/main/kotlin/io/spine/dependency/local/ProtoData.kt
+    rm -f ../buildSrc/src/main/kotlin/io/spine/dependency/local/ModelCompiler.kt
     rm -f ../buildSrc/src/main/kotlin/io/spine/dependency/local/McJava.kt
 
     # Remove the retired vanilla-JaCoCo script plugins for the same reason as the