dsh-repeat-stop: Hard Stop Consecutive Identical DeepSeek Harness Tool Calls

`dsh-repeat-stop` is a plugin for DeepSeek Harness (DSH) designed to address the issue of agents repeatedly calling the same tool after a failed invocation. It uses a hard-stop mechanism to directly block the next call when consecutive invocations reach a threshold (default: 6), preventing infinite loops. The plugin supports whitelist/blacklist configurations and automatically resets the counter when parameters or the tool change. It must be used in conjunction with `dsh-tool-budget` and can effectively improve the stability of agent workflows.