dsh-fingerprint-show: Display the Model Fingerprint in the Web UI Metrics Row

`dsh-fingerprint-show` is a DeepSeek Harness client plugin maintained by Bortor, designed to address the difficulty developers face in confirming model deployment versions. It captures the `system_fingerprint` from OpenAI-compatible APIs and appends it as plain text to the end of the metrics line for each AI response in the Web UI. The plugin features zero intrusion, pixel-level style consistency, hover synchronization, and history retention. Developers can install it by specifying the repository directory and verify model deployment consistency in the browser after installation.