dsh-with-pencil: Integrating Official Pencil Canvas and Design Tools in DSH Sessions

dsh-with-pencil is a DSH Web community plugin maintained by IWAIBAOLI, which integrates the official @pen.dev/cli headless engine and browser editor into Harness. It provides an on-demand canvas, session-bound workspaces, real-time agent editing, and nine pencil_mcp model tools, supporting screenshot spot-checks, HTML/image exports, and visionMode configuration. The installation command is `npx @deepseek-ai/dsh plugin --profile web add dsh-with-pencil`, and it requires Node >= 22.15.0.