Minify openapi.json and gitignore .coverage

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

Author: shuveb

.gitignore

@@ -19,6 +19,7 @@ venv/
 .pytest_cache/
 .mypy_cache/
 .ruff_cache/
+.coverage
 
 # OS
 .DS_Store