dsh-quota: DeepSeek Harness Web Multi-Provider Quota and Cost Dashboard

`dsh-quota` is a plugin specifically designed for DeepSeek Harness (DSH) to address billing and cost tracking for third-party relay providers. It provides a visualization dashboard for tracking token usage and estimated costs by session, daily, and over a 30-day period. With multi-provider integration, it can aggregate balance and quota information from platforms such as Moonshot and Zhipu without requiring additional credentials. Additionally, the plugin supports data migration, CSV export, and custom route mapping, helping developers fully monitor resource consumption and budget management.