dsh-model-capabilities: DSH Model Capability Editor

The DeepSeek Harness (DSH) plugin `dsh-model-capabilities` offers a visual configuration solution for the tedious and error-prone process of manually adjusting `pi-ai` routing parameters, such as context window, output tokens, image input, and thinking parameters. Its main features include a visual editing interface, automatic loading of model data from OpenRouter, intelligent algorithm-based matching to generate default drafts, and custom parameter mapping. It provides a safe correction mechanism that only fills blank fields without overriding manually edited values, while also offering browser memory. The plugin applies only to the `llm-pi-ai` route, and configurations saved to DSH settings persist after uninstallation, effectively simplifying fine-grained management of model parameters.