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

deploy/nginx/conf.d/admin.conf

@@ -0,0 +1,91 @@
+# 考培练系统 SaaS 超级管理后台
+# 域名：admin.kpl.ireborn.com.cn
+
+# HTTP 重定向到 HTTPS
+server {
+    listen 80;
+    server_name admin.kpl.ireborn.com.cn;
+    
+    # Let's Encrypt 证书验证
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+    
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}
+
+# HTTPS
+server {
+    listen 443 ssl;
+    http2 on;
+    server_name admin.kpl.ireborn.com.cn;
+    
+    # SSL 证书
+    ssl_certificate /etc/letsencrypt/live/admin.kpl.ireborn.com.cn/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/admin.kpl.ireborn.com.cn/privkey.pem;
+    
+    # SSL 配置
+    ssl_session_timeout 1d;
+    ssl_session_cache shared:AdminSSL:10m;
+    ssl_session_tickets off;
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
+    ssl_prefer_server_ciphers off;
+    
+    # 安全头
+    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    
+    # Docker DNS resolver
+    resolver 127.0.0.11 valid=30s;
+    
+    # 动态 upstream 变量
+    set $admin_frontend kaopeilian-admin-frontend;
+    set $admin_backend kaopeilian-admin-backend;
+    
+    # API 路由 - 使用 rewrite 确保正确传递 URI
+    location /api/ {
+        rewrite ^/api/(.*)$ /api/$1 break;
+        proxy_pass http://$admin_backend:8000;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_cache_bypass $http_upgrade;
+        proxy_read_timeout 300s;
+        proxy_connect_timeout 75s;
+        client_max_body_size 50M;
+    }
+    
+    # 健康检查
+    location = /health {
+        proxy_pass http://$admin_backend:8000/health;
+        proxy_set_header Host $host;
+        access_log off;
+    }
+    
+    # 前端静态资源
+    location / {
+        proxy_pass http://$admin_frontend:80;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_cache_bypass $http_upgrade;
+        
+        # HTML 不缓存
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+        add_header Pragma "no-cache";
+        expires 0;
+    }
+}