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/docker-compose.dev.yml

@@ -0,0 +1,59 @@
+version: '3.8'
+
+services:
+  mysql:
+    image: mysql:8.0
+    container_name: kaopeilian-mysql
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+      MYSQL_DATABASE: kaopeilian
+      MYSQL_CHARACTER_SET: utf8mb4
+      MYSQL_COLLATION: utf8mb4_unicode_ci
+    ports:
+      - "3306:3306"
+    volumes:
+      - mysql_data:/var/lib/mysql
+      - ./scripts/init.sql:/docker-entrypoint-initdb.d/init.sql
+    command: --default-authentication-plugin=mysql_native_password --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
+    networks:
+      - kaopeilian-network
+
+  redis:
+    image: redis:7-alpine
+    container_name: kaopeilian-redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis_data:/data
+    networks:
+      - kaopeilian-network
+
+  backend:
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
+    container_name: kaopeilian-backend
+    depends_on:
+      - mysql
+      - redis
+    environment:
+      DATABASE_URL: mysql+aiomysql://root:Kaopeilian2025%21%40%23@120.79.247.16:3306/kaopeilian?charset=utf8mb4
+      REDIS_URL: redis://redis:6379/0
+    ports:
+      - "8000:8000"
+    volumes:
+      - ./app:/app/app
+      - ./tests:/app/tests
+      - ./scripts:/app/scripts
+      - ./.env:/app/.env
+    command: uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
+    networks:
+      - kaopeilian-network
+
+volumes:
+  mysql_data:
+  redis_data:
+
+networks:
+  kaopeilian-network:
+    driver: bridge