OffPeak: Send Interception and Scheduled Execution During Low-Price Periods Under DeepSeek Peak-Valley Pricing

OffPeak is a plugin for DSH, specifically designed to optimize costs for DeepSeek V4 Flash/Pro users. When a user attempts to send a command during peak hours (09:00–12:00 or 14:00–18:00 Beijing Time), the plugin intercepts the send action, displays a price comparison between peak and off-peak periods, and allows the user to choose between sending immediately, scheduling execution, or dismissing the reminder for the day. If scheduling is selected, the user can use a time wheel to choose an off-peak period (00:00–08:59 or 18:00–23:59), and the plugin will automatically submit the command to the original session from the local server at the specified time, without requiring the browser to remain open. This plugin only takes effect with Web configuration, uses hardcoded price judgments, has no network calls or telemetry, features simple installation, and aims to help users control API costs while retaining the flexibility to send.