DeepSeek Harness Plugin: dsh-model-tester (One-Click Model Availability Testing)

The DeepSeek Harness (DSH) plugin `dsh-model-tester` follows the “everything is a plugin” philosophy and is designed to quickly validate model availability and performance. It adds a testing panel to the Settings → Models page, supports concurrent streaming calls, and provides multi-dimensional metrics such as TPS and first-token latency. It also features channel-based isolation, failure diagnostics, and smart filtering. Users can install it via command and run one-click tests, making its standardized workflow well suited to scenarios that require frequent validation of model performance and connectivity.