dsh-project-deck: Aggregate repositories and WIP projects into a visible progress deck.

Introducing dsh-project-deck (v0.1.8, MIT), a DSH plugin maintained by peng456. It provides a project registry, a visual dashboard, scheduled WeChat notifications, auto-discovery, and multi-machine scanning: register projects with `deck add`, view Git status and recent activities on the dashboard, and receive a WeChat notification every 4 hours by default, without disturbing you during idle times; nodes report a consolidated list of machines in read-only mode. The article covers installation steps, common commands, configuration options, notification channels, as well as key points on multi-machine scanning and security permissions.