dsh-quota-dashboard: Session Cost Statistics and Unified Quota Dashboard

dsh-quota-dashboard is an MIT-licensed plugin for DSH designed to centralize scattered session costs and multi-platform quotas into a unified web dashboard. Its core functions include session cost statistics and unified quota monitoring. The former supports displaying input, cached, and output tokens as well as costs, providing daily budgets, balances, a 26-week usage heatmap, and peak-valley pricing, and supports both Chinese and English. The latter integrates five major providers: DeepSeek, OpenCode GO, Kimi For Coding, GLM Coding Plan, and Volcano Ark, supporting parallel queries, automatic refresh, and countdown progress. The plugin must be installed via local source code and requires a restart of dsh web to take effect. Configuration is stored in DSH_HOME, and credentials are parsed primarily from the credential database. In terms of security, credentials only...