laurel: Add control center and six toggleable modules to DeepSeek Harness

Laurel is a DeepSeek Harness (DSH) suite maintained by sakayorilove, featuring a Control Center and six independently switchable modules: Laurel Notification, Memory Core, Context Compression, Auto Continue, Inner Turmoil Guardrails, and Thought Scroll Window. The Control Center provides a "Module Store and Updates" interface where modules can be independently enabled, updated, rolled back, or uninstalled, while configuration and data are preserved. This article introduces its positioning, the capabilities of the six modules, two installation methods (installing a .tgz file via the native plugin page or using `pnpm add` in the profile), the daily usage rules of the Module Store, and important considerations such as checking source code and license before installation, as well as noting that plugins run with the permissions of the current DSH process.