DSH-BrowserUse: A browser-use Style Browser Automation Plugin for DeepSeek Harness

`dsh-browseruse` is a browser automation plugin for DeepSeek Harness (DSH), implemented purely in JavaScript with no build step required. It drives a standalone Google Chrome instance via `playwright-core`, enabling operations such as opening web pages, reading content, clicking, inputting text, scrolling, and switching between tabs, while supporting autonomous decision-making based on page state during multi-step tasks. Core features include: 11 fine-grained `browser_*` tools; `browser_task` for natural language autonomous tasks (default maximum of 30 steps); `browser_schedule` for scheduled tasks within the current session; a user confirmation mechanism before sensitive operations (e.g., payments, deletions); manual takeover during CAPTCHA detection; and an independent Pr