Revert "chore(hf): add run-log probe markers and stderr heartbeat"

This reverts commit 100c4b9a4b67b24e97a5a912bfef92f0d6edbbb8.

Dockerfile

@@ -35,8 +35,8 @@ RUN npm install && npm --prefix frontend install
 COPY . .
 RUN npm run build
 
-# 7. 启动脚本（run logs 探针）
-RUN printf '#!/bin/bash\nset -e\necho "BOOT_STDOUT $(date -Is)"\necho "BOOT_STDERR $(date -Is)" 1>&2\n(while true; do echo "HEARTBEAT_STDERR $(date -Is)" 1>&2; sleep 15; done) &\nredis-server --daemonize yes\nexec npm run start\n' > /app/start.sh && chmod +x /app/start.sh
+# 7. 启动脚本
+RUN printf '#!/bin/bash\nredis-server --daemonize yes\nnpm run start' > /app/start.sh && chmod +x /app/start.sh
 
 ENV PORT=7860
 EXPOSE 7860