fix(deploy): web 健康检查 curl /plans 而非 /(/ 现 307→/plans 致 deploy 误报失败)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

deploy/deploy-prod.sh

@@ -73,7 +73,8 @@ main() {
     sleep 2
   done
   [[ "${code:-}" == "200" ]] || die "service health=$code"
-  webcode=$(curl -s -m 30 -o /dev/null -w '%{http_code}' http://127.0.0.1:3100/ || true)
+  # / 现为 307→/plans(next.config redirects),直接验 /plans 的 200
+  webcode=$(curl -s -m 30 -o /dev/null -w '%{http_code}' http://127.0.0.1:3100/plans || true)
   [[ "$webcode" == "200" ]] || die "web http=$webcode"
   echo "  health 200 / web 200"