dsh-web-verify-panel: Complete Web Verification in the Sidebar and Block System Browser Pop-ups

dsh-web-verify-panel is a plugin for DeepSeek Harness (DSH) designed to address the issue of pop-ups obscuring the page and interrupting the workflow when an agent verifies a web page. It renders web pages in a sandboxed iframe within the sidebar to maintain context continuity, and supports capturing page regions directly with `computer_screenshot`. The plugin supports split-screen workflows and resource reuse, and provides a `web_verify_open` tool that returns a page region as a `rect` for screenshot capture. Installation depends on `dsh-better-sidebar`, and it is primarily intended for Windows desktop environments.