dsh-migrate-on-429: DeepSeek Harness Automatic Migration Plugin for 429 Rate Limits

`dsh-migrate-on-429` is a workflow plugin for DeepSeek Harness designed to resolve 429 rate-limiting issues caused by long contexts. Through a mechanism of “smart detection, pre-threshold retries, and automatic handoff migration,” it safely transfers tasks from an old session to a new one to continue processing, avoiding invalid retries and wasted quota. Core features include intelligent rate-limit detection, serial handoff logic, automatic workspace registration, and a mechanism to prevent chained handoffs among multiple subagents. Installation requires removing the old plugin `dsh-auto-continue-429` and installing `@minyang2026/dsh-migrate-on-429` via the command line. The plugin is safe for browser-side bundling and can effectively improve stability in long-conversation scenarios.