dsh-liang-price-badge: Sidebar component that stays on one line, displaying the current peak-valley price and switch countdown.

Introducing the DSH client plugin `dsh-liang-price-badge`: Based on DeepSeek's official peak-valley pricing, this plugin permanently displays the current peak/idle status in the sidebar, along with a second-level countdown to the next switch and a 50% discount prompt for idle times. It automatically recognizes weekends and statutory holidays. It operates purely on local calculation, requires no internet connection, and does not modify the model. This article details its time period rules, display effects, a three-step local installation process, the two configuration constants in `client.js` (`PEAK_WINDOWS`, `HOLIDAYS`), maintenance notes for the holiday table, as well as the MIT license, meme material disclaimer, and runtime permission reminders.