Use dsh-harness-ops to implement A/B rotation, 10-second self-healing and one-click rollback for DeepSeek Harness

`dsh-harness-ops` is a DeepSeek Harness operation and maintenance toolbox maintained by fakechris (MIT License, current version 0.3.2). It uses two A/B slots to host official daily snapshots, and only performs atomic switchover after passing acceptance checks, with one-click rollback available. It uses `launchd`/`systemd` to start the web service in about 10 seconds, and the bundle plugin resumes the interrupted TURN service. When the web service is completely down, use `dsh-doctor` to run nine-item diagnostics. The community directory is categorized under interface enhancements. The complete installation shall follow the procedure of executing `install.sh` after `git clone`, and plugins run with the permissions of the current `dsh` process.