fix(ci): 修复 worker HEALTHCHECK 引号嵌套 bug

将 4 个脚本中 5 处 sh -c for 循环健康检查命令替换为简洁的
grep -lq celery /proc/[0-9]*/cmdline 2>/dev/null || exit 1

原写法中嵌套双引号导致 $pid 不被展开为变量，
grep 始终匹配字面量 $pid 而非实际进程路径，
healthcheck 永远返回 exit code 1，容器被误判为 unhealthy。

受影响文件：
- scripts/ci_staging_healthcheck.sh
- scripts/ci_staging_deploy.sh (2处)
- scripts/ci_production_healthcheck.sh
- scripts/rollback_production.sh

scripts/ci_production_healthcheck.sh

@@ -310,7 +310,7 @@ docker run -d \
   --restart unless-stopped \
   --cpus 2 \
   --memory 2g \
-  --health-cmd "sh -c \"for pid in /proc/[0-9]*/cmdline; do if grep -ql celery \"$pid\" 2>/dev/null; then exit 0; fi; done; exit 1\"" \
+  --health-cmd "grep -lq celery /proc/[0-9]*/cmdline 2>/dev/null || exit 1" \
   --health-interval 30s \
   --health-timeout 10s \
   --health-retries 3 \

scripts/ci_staging_deploy.sh

@@ -192,7 +192,7 @@ rollback() {
       -e PUBLIC_API_BASE_URL=https://staging-api.xiaoxiajianji.com \
       -v "$GENERATED_DIR:/app/generated" \
       --restart unless-stopped \
-      --health-cmd "sh -c \"for pid in /proc/[0-9]*/cmdline; do if grep -ql celery \"\$pid\" 2>/dev/null; then exit 0; fi; done; exit 1\"" \
+      --health-cmd "grep -lq celery /proc/[0-9]*/cmdline 2>/dev/null || exit 1" \
       --health-interval 30s \
       --health-timeout 10s \
       --health-retries 3 \
@@ -504,7 +504,7 @@ docker run -d \
   -e PUBLIC_API_BASE_URL=https://staging-api.xiaoxiajianji.com \
   -v "$GENERATED_DIR:/app/generated" \
   --restart unless-stopped \
-  --health-cmd "sh -c \"for pid in /proc/[0-9]*/cmdline; do if grep -ql celery \"\$pid\" 2>/dev/null; then exit 0; fi; done; exit 1\"" \
+  --health-cmd "grep -lq celery /proc/[0-9]*/cmdline 2>/dev/null || exit 1" \
   --health-interval 30s \
   --health-timeout 10s \
   --health-retries 3 \

scripts/ci_staging_healthcheck.sh

@@ -305,7 +305,7 @@ docker run -d \
   -e PUBLIC_API_BASE_URL=https://staging-api.xiaoxiajianji.com \
   -v "$GENERATED_DIR:/app/generated" \
   --restart unless-stopped \
-  --health-cmd "sh -c \"for pid in /proc/[0-9]*/cmdline; do if grep -ql celery \"$pid\" 2>/dev/null; then exit 0; fi; done; exit 1\"" \
+  --health-cmd "grep -lq celery /proc/[0-9]*/cmdline 2>/dev/null || exit 1" \
   --health-interval 30s \
   --health-timeout 10s \
   --health-retries 3 \

scripts/rollback_production.sh

@@ -201,7 +201,7 @@ docker run -d \
   --restart unless-stopped \
   --cpus 2 \
   --memory 2g \
-  --health-cmd "sh -c \"for pid in /proc/[0-9]*/cmdline; do if grep -ql celery \"$pid\" 2>/dev/null; then exit 0; fi; done; exit 1\"" \
+  --health-cmd "grep -lq celery /proc/[0-9]*/cmdline 2>/dev/null || exit 1" \
   --health-interval 30s \
   --health-timeout 10s \
   --health-retries 3 \