fix: CI health check 使用 bun fetch 替代 curl

runner 镜像 duoqi-runner:bun-git 未安装 curl，
改用 bun 内置 fetch API 做 HTTP 健康检查。

.gitea/workflows/deploy.yml

@@ -69,7 +69,7 @@ jobs:
         run: |
           sleep 10
           for i in {1..5}; do
-            if curl -f http://localhost:3001/health; then
+            if bun -e "fetch('http://localhost:3001/health').then(r=>r.ok?process.exit(0):process.exit(1)).catch(()=>process.exit(1))"; then
               echo "Test environment is healthy!"
               exit 0
             fi
@@ -107,7 +107,7 @@ jobs:
         run: |
           sleep 15
           for i in {1..5}; do
-            if curl -f http://localhost:3000/health; then
+            if bun -e "fetch('http://localhost:3000/health').then(r=>r.ok?process.exit(0):process.exit(1)).catch(()=>process.exit(1))"; then
               echo "Production deployment successful!"
               exit 0
             fi