feat: 宇之然平台 v2.0 - 完整重构版

核心功能:
- 新增 JWT 认证系统，支持管理员登录/登出
- 前后端合并为单一 FastAPI 应用 (端口 8001)
- 系统概览页：6 个统计卡片，点击跳转筛选
- 选题管理页：批量操作 (刷新/创作/优化)，时间列展示
- 系统日志页：整合日志查看功能
- 用户管理页：管理员可创建/删除用户
- 移动端适配：响应式布局，底部导航栏
- 标题居中显示

技术改进:
- 添加 generated_at 字段支持创作时间记录
- 状态更新时自动同步 updated_at
- 所有 API 路由添加 JWT 认证保护
- 前端 authFetch 封装自动附加 Token
- 升级 FastAPI 0.136, Pydantic 2.13 等依赖

修复:
- 修复 API 500 错误 (数据库列缺失)
- 修复 formatRelativeTime 未定义错误
- 修复登录 Token 存储和自动附加逻辑

platform/docker-compose.yml

@@ -0,0 +1,91 @@
+version: '3.8'
+
+services:
+  app:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    ports:
+      - "8002:8001"
+    environment:
+      - DATABASE_URL=postgresql://yuzhiran:yuzhiran@db:5432/yuzhiran_db
+      - REDIS_URL=redis://redis:6379/0
+      - SECRET_KEY=your-secret-key-change-in-production
+      - ALGORITHM=HS256
+      - ACCESS_TOKEN_EXPIRE_MINUTES=10080
+      - DEBUG=False
+      - ENVIRONMENT=production
+    depends_on:
+      - db
+      - redis
+    volumes:
+      - ./backend:/app
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8001/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  db:
+    image: postgres:13-alpine
+    environment:
+      POSTGRES_DB: yuzhiran_db
+      POSTGRES_USER: yuzhiran
+      POSTGRES_PASSWORD: yuzhiran
+      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --locale=C"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
+    ports:
+      - "5433:5432"
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U yuzhiran -d yuzhiran_db"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    command: redis-server --appendonly yes --requirepass redis123
+    volumes:
+      - redis_data:/data
+    ports:
+      - "6379:6379"
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+
+  nginx:
+    image: nginx:alpine
+    ports:
+      - "8080:80"
+      - "8443:443"
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+      - ./ssl:/etc/nginx/ssl
+    depends_on:
+      - app
+    restart: unless-stopped
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    ports:
+      - "8000:8000"
+    volumes:
+      - ./frontend:/usr/share/nginx/html
+    restart: unless-stopped
+
+volumes:
+  postgres_data:
+  redis_data:
+
+networks:
+  default:
+    driver: bridge