dsh-bath-reno: Age-Friendly Bathroom Renovation Recommendations

The DeepSeek Harness (DSH) plugin `dsh-bath-reno` provides a vertical-scenario solution for bathroom renovation. Maintained by user `uckkk`, it registers the `bath_reno` tool and can directly output age-friendly renovation recommendations. Users can install it via the command line, after which the tool can be invoked directly in a DSH session. The plugin is implemented in pure Node.js with no network dependencies, making it suitable for scenarios requiring quick integration of this capability.