feat: 初始化考培练系统项目

- 从服务器拉取完整代码
- 按框架规范整理项目结构
- 配置 Drone CI 测试环境部署
- 包含后端(FastAPI)、前端(Vue3)、管理端

技术栈: Vue3 + TypeScript + FastAPI + MySQL

backend/.gitignore

@@ -0,0 +1,79 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# Virtual Environment
+venv/
+ENV/
+env/
+.venv
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Testing
+.coverage
+.pytest_cache/
+htmlcov/
+.tox/
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Environment
+.env
+.env.local
+.env.*.local
+local_config.py
+
+# Logs
+*.log
+logs/
+
+# Database
+*.db
+*.sqlite
+*.sqlite3
+
+# Uploads
+uploads/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Docker
+docker-compose.override.yml
+
+# Alembic
+alembic.ini
+
+# Private keys
+*.pem
+*.key
+*.crt
+*.cert