ignore .env file for local secrets

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

Author: shrimbly

.gitignore

@@ -19,6 +19,9 @@ venv/
 env/
 .env/
 
+# Local secrets
+.env
+
 # Pip installation artifacts
 pip-wheel-metadata/
 pip-log.txt