DeepSeek / OpenCode Go / OpenAI 额度悬浮窗：输入框上方显示，支持 DSH 模型列表同步、自定义额度接口、可拖动、主题适配；内置 DSH 会话 token 用量统计（按 日/月/模型）与官方峰谷价费用估算。

Provider quota/balance widget for the dsh web surface: collapsed glanceable capsule expanding into a Harness-native card with a settings panel (provider visibility / refresh interval / warn thresholds), fed by a loopback Connection RPC channel whose host