dsh-plugin-adaptive-agent-policy: Adaptive Task Routing, Loop Budgeting, and Progressive Pruning Plugin for DeepSeek Harness

To address the context overflow and high loop costs encountered by DeepSeek Harness agents in large-scale tasks, the `dsh-plugin-adaptive-agent-policy` plugin provides an adaptive control solution that does not require modifying the underlying model. Its core capabilities include text-analysis-based multilingual task routing, independent budget control, progressive text trimming, and non-persistent state management. Through fine-grained policy configuration, the plugin effectively mitigates context bloat and ineffective loops, making it suitable for various types of task processing.