chore: ignore local agent/audit files (.claude, CLAUDE.md, big-refactor-audit)

Keeps local-only agent and audit/scratch files out of the published repo.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: sezeryavuz

.gitignore

@@ -32,3 +32,11 @@ SDK_REFERENCE.md
 # modulex-meta orchestration state (local-only for public repos)
 .mxmeta/
 .claude/
+
+# local-only agent / audit / scratch files (must not be published)
+CLAUDE.md
+AGENTS.md
+.cursor/
+.agents/
+big-refactor-audit/
+.venv*/