dougen/dsh-deepseek-usage

Shows a card in the sidebar footer with the DeepSeek account balance (read from the official /user/balance endpoint with the API key DSH already stores) and the unit prices of the active model — input, cache read and output — taken from a built-in snapshot of the official price table. A dot marks the current billing window and a countdown shows the time left until it flips: peak is Mon–Fri 9:00–12:00 and 14:00–18:00 Beijing Time, excluding Chinese public holidays, and everything else is off-peak. Prices and the dot appear only for official DeepSeek models; for any other model the card shows the balance alone. The card refreshes every 30 seconds, on click, and when the model changes, and follows the app theme and the DSH language.