Add Claude-local files to .gitignore

Prevent CLAUDE.md, .claude/, and docs/tasks.md from being
accidentally committed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mambax7

.gitignore

@@ -5,6 +5,21 @@
 .idea/
 vendor/
 composer.lock
-build/
 coverage.clover
 git-phpcs.phar
+
+# Local config overrides (only .dist files are tracked)
+phpunit.xml
+.phpcs.xml
+
+# Build artifacts
+build/
+
+# PHPUnit result cache
+.phpunit.result.cache
+.phpunit.cache/
+
+# Claude local files
+CLAUDE.md
+.claude/
+docs/tasks.md