# Backend Python
__pycache__/
*.pyc
venv/
*.db
.env
*.sqlite3
*.db-journal
.pytest_cache/
apscheduler.db

# Backend Python (preserved but not tracked)
backend-python/

# Backend Go
backend/sql-platform
# 注意：backend/go.sum 必须提交（Go 官方要求），否则 Docker 构建时 go mod download 无法校验依赖

# Frontend
node_modules/
dist/

# OS
.DS_Store
Thumbs.db

# Runtime
.pids/
logs/

# Docs (large/generated)
OPTIMIZATION_GUIDE*.md