dsh-browser-playwright: A Playwright-Based Browser Plugin for DeepSeek Harness

dsh-browser-playwright is an MIT-licensed browser plugin designed for DeepSeek Harness, aimed at addressing issues such as CSS selector mismatches or oversized DOM contexts in traditional solutions. By leveraging Playwright to drive a real browser, the plugin utilizes accessibility snapshots and stable element references (ref) to constrain the model's interaction interface, avoiding direct selector guessing or outputting the complete DOM. Its core features include support for tab management, screenshots, structured extraction, and controlled JavaScript execution, along with 17 tool interfaces prefixed with `browser_`. The plugin can automatically detect browser channels such as Chromium and Chrome, and supports restricting navigation domains.