dsh-valley-meter: DeepSeek Peak-Valley Meter and Balance Badge

`dsh-valley-meter` is a client-side plugin focused on DeepSeek Harness, designed to address developers’ pain points in monitoring balances and understanding peak/off-peak billing rules. It runs independently without relying on other components, enabling real-time cost visualization by displaying a numeric balance badge above the input field and showing a 24-hour peak/off-peak timeline on hover. Core features include automatic balance refresh, standalone real-time billing monitoring, local ledger logging, and support for the all-day weekend off-peak rule implemented from 2026 onward. Additionally, the plugin offers multiple color schemes for customization, and clicking the “¥” symbol quickly redirects to the official recharge page, helping developers intuitively track their usage costs.