What problem does it solve? New DeepSeek Harness users lack a structured entry point to understand its plugin-based architecture, verify that the skill system works, and learn how to extend the platform with Markdown skills or TypeScript code plugins. ## Core Features & Use Cases - Layered Onboarding: Explains DSH's "Everything is a Plugin" design in four progressive layers, from architecture overview to the Cordis spatiotemporal composability theory behind it. - Live Lifecycle Verification: Walks users through deleting and restoring the skill file to observe hot-reload behavior without restarting the process. - Code Plugin Pitfall Guide: Documents three verified beginner errors when writing TypeScript plugins, including the defineTool output schema requirement, the required-field restriction, and the export default inject bug. - Use Case: A developer types "hello dsh" after installing DeepSeek Harness and receives a guided, step-by-step introduction that confirms the skill pipeline works and teaches them how to build their first plugin. ## Quick Start Say "hello dsh" to start the guided first lesson on the DeepSeek Harness plugin system.