全面审查优化: 43项修复（安全/性能/可靠性）+ 文档更新

🔴 P0 安全: .env入gitignore, CSP/HSTS, Logo安全(5MB限制+SVG消毒+SHA256), middleware权限收紧(VIP不能访问admin), 发布去重, GitHub认证, 删除危险API, skill-discoverer绕过审核修复, prisma默认连接修复
🔴 P0 可靠性: deepseek/github超时重试, 脚本层DeepSeek保护, 脚本启动验证, OAuth竞态修复
🔴 P0 性能: skill-discoverer N+1优化(↓94%), 后台API分页限制, getUserStats聚合优化
🟡 P1: 分类动态加载, 星级字段统一, fetch-logos并发Bug修复, 批量发布冲突不删除, check-tools重试, 前端空指针修复(13处), logo-fetcher日志, rate-limit清理, 公开API缓存

scripts/daily-discover.mjs

@@ -188,8 +188,8 @@ async function genReview(repoName, desc, stars, license, readme) {
     .replace("{readmeSummary}", readme.substring(0, 1500));
   const { choices } = await withRetry(async () => {
     return await openai.chat.completions.create({
-      model: "deepseek-v4-pro", messages: [{ role: "user", content: prompt }], temperature: 0.3,
-    });
+      model: process.env.DEEPSEEK_MODEL || "deepseek-v4-pro", messages: [{ role: "user", content: prompt }], temperature: 0.3,
+    }, { signal: AbortSignal.timeout(120000) });
   }, { maxRetries: 3, label: "DeepSeek Review API" });
   const content = choices[0]?.message?.content;
   if (!content) throw new Error("Empty response");
@@ -206,6 +206,9 @@ async function genReview(repoName, desc, stars, license, readme) {
 }
 
 async function main() {
+  if (!process.env.DEEPSEEK_API_KEY) throw new Error("缺少环境变量: DEEPSEEK_API_KEY");
+  if (!process.env.DATABASE_URL) throw new Error("缺少环境变量: DATABASE_URL");
+
   const startTime = new Date();
   console.log(`🚀 [Task4] ${new Date().toISOString().split("T")[0]} 发现新AI技能...\n`);
   const DAILY_LIMIT = 30;