dsh-usage-dashboard: DeepSeek Usage and Quota Dashboard for DSH

dsh-usage-dashboard is a DSH Web plugin (MIT licensed) developed by Cassius0924, designed to address the lack of an intuitive cost view when invoking DeepSeek models. It adds a "Credits" tab and a draggable floating window to the DSH Web GUI, displaying account balance, today's/monthly/cumulative consumption along with month-over-month comparisons, cost rankings by model and session, prefix cache savings, a 7-day balance forecast (with red alerts if projected to drop below 3 days), billing estimates under the 2026-08-17 peak/valley pricing, and a 30-day hourly usage distribution with a 12-week heatmap. The plugin supports both Chinese and English languages, follows the host theme, and includes a balance alert line feature. Note that the costs displayed by the plugin are estimates and do not include any discounts from DeepSeek; for final amounts, please refer to the official