DeepSeek Harness Subagent Model Routing Plugin: Automatically Route Flash and Pro

The dsh-delegate-router plugin addresses the excessive costs caused by DSH subagents inheriting the parent model by default (such as Pro). It automatically routes lightweight tasks to the Flash model and keeps demanding tasks on the Pro model based on task characteristics, with support for custom rules, manual overrides, and decision logging. The plugin takes effect without a restart, significantly reducing inference costs through model routing.