dsh-locale-tr: Turkish Language Pack for DeepSeek Harness

`dsh-locale-tr` is a Turkish locale plugin for the DeepSeek Harness Web UI. It covers 42 namespaces and 1,278 strings, enabling full translation of the UI text into Turkish. Developers can install it via a CLI command and activate it in Settings. If a translation is missing, the interface automatically falls back to English. The plugin aims to reduce the cognitive load of debugging for non-English developers and is suitable for users who need to develop or debug in a Turkish-language environment.