Update CLAUDE.md: mark createPositions timestamp bug as fixed with commit hash

Author: silverbackdan

CLAUDE.md

@@ -616,7 +616,7 @@ Services instrumented with optional `?CwaCollectorData` arg: `JWTEventListener`,
 
 ## ~~Bug: `CwaFixtureBuilder::createPositions()` does not timestamp components~~ — FIXED
 
-**Fix (committed PLACEHOLDER):** In `createPositions()`, before `$this->persistWithAssociations($component)`, guard with `isConfigured()` and call `persistTimestampedFields($component, true)` when the component is not already in `$persistedEntities`. PHPUnit test added to `tests/Fixture/CwaFixtureBuilderTest.php`.
+**Fix (committed `f1ddff5a`):** In `createPositions()`, before `$this->persistWithAssociations($component)`, guard with `isConfigured()` and call `persistTimestampedFields($component, true)` when the component is not already in `$persistedEntities`. PHPUnit test added to `tests/Fixture/CwaFixtureBuilderTest.php`.
 
 ---