diff --git a/.claude/CLAUDE.MD b/.claude/CLAUDE.MD
index 1823cb4..5da2437 100644
--- a/.claude/CLAUDE.MD
+++ b/.claude/CLAUDE.MD
@@ -85,7 +85,7 @@ Create the file if it does not exist. Never delete existing entries.
 - `settings.gradle.kts` must include every module via `include(":modules:<service>")`.
 - Architecture decisions go in `docs/adr/` as numbered Markdown files (`ADR-001-<title>.md`).
 - API contracts live in `/docs/api/`.
-- Unit tests extend `AnyFunSuite with Matchers with JUnitSuiteLike` — no `@Test` annotations, no `: Unit` requirement
+- Unit tests extend `AnyFunSuite with Matchers` — no `@Test` annotations, no `: Unit` requirement
 - Integration tests use `@QuarkusTest` with JUnit 5 — `@Test` methods must be explicitly typed `: Unit`
 - Always exclude scala-library from Quarkus deps to avoid Scala 2 conflicts
 
diff --git a/.claude/agents/code-reviewer.md b/.claude/agents/code-reviewer.md
index 37696e8..0c7e612 100644
--- a/.claude/agents/code-reviewer.md
+++ b/.claude/agents/code-reviewer.md
@@ -23,7 +23,7 @@ report findings to team-leader, who re-invokes scala-implementer for fixes.
 - `@QuarkusTest` methods (JUnit 5) must be explicitly typed `: Unit`
 
 ### Tests
-- Unit tests must extend `AnyFunSuite with Matchers with JUnitSuiteLike`, not plain JUnit 5
+- Unit tests must extend `AnyFunSuite with Matchers`
 - Integration tests use `@QuarkusTest` with JUnit 5 `@Test` methods
 - No raw `@Test` annotations on plain unit test classes
 
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index 4c6280e..7ddfc9e 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -7,6 +7,6 @@
     </profile>
   </component>
   <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/CLAUDE.md b/CLAUDE.md
index 85b9e46..cecf2a5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -45,13 +45,13 @@ The only current module is `core` (`modules/core`).
 - Jakarta annotations only (`jakarta.*`), never `javax.*`.
 - Use reactive types (`Uni`, `Multi`) for I/O; no blocking calls on the event loop.
 - **Always exclude `org.scala-lang:scala-library` from Quarkus BOM** to avoid Scala 2 conflicts.
-- **Unit tests use `extends AnyFunSuite with Matchers with JUnitSuiteLike`** — ScalaTest DSL, no `@Test` annotations needed.
+- **Unit tests use `extends AnyFunSuite with Matchers`** — ScalaTest DSL, no `@Test` annotations needed.
 - **Integration tests use `@QuarkusTest` with JUnit 5** — explicit `: Unit` return type still required on `@Test` methods.
 
 ### Agent Workflow (for new services)
 1. **architect** → writes OpenAPI contract to `docs/api/{service}.yaml` and ADR to `docs/adr/`.
 2. **scala-implementer** → reads contract, implements service under `modules/{service}/`.
-3. **test-writer** → writes `@QuarkusTest` integration tests and `AnyFunSuite with Matchers with JUnitSuiteLike` unit tests.
+3. **test-writer** → writes `@QuarkusTest` integration tests and `AnyFunSuite with Matchers` unit tests.
 4. **gradle-builder** → resolves any build/dependency issues.
 5. **code-reviewer** → reviews; reports findings back without self-fixing.
 
diff --git a/modules/core/build.gradle.kts b/modules/core/build.gradle.kts
index 29f9282..299068b 100644
--- a/modules/core/build.gradle.kts
+++ b/modules/core/build.gradle.kts
@@ -23,7 +23,7 @@ scoverage {
 }
 
 application {
-    mainClass.set("de.nowchess.chess.chessMain")
+    mainClass.set("de.nowchess.chess.Main")
 }
 
 tasks.withType<ScalaCompile> {