What problem does it solve? Implementing a DeepSeek Harness (DSH) plugin requires following many subtle Cordis conventions—inject declarations, fiber-owned effects, Schemastery config validation, invariant companions, and bundle patch metadata—and missing any of them produces plugins that silently fail to load, leak registrations on unload, or break the host's tool scheduler. ## Core Features & Use Cases - Plugin Form Enforcement: Preserves the correct function-plugin namespace export or service-plugin default export, preventing the stray default export that makes the Cordis Loader drop inject, Config, and apply. - Lifecycle-Safe Registrations: Ensures every registry contribution is an effect owned by the plugin fiber so unloading cleanly removes tools, listeners, and services. - Config & Invariant Discipline: Guides Schemastery-validated configuration, credential handling, and the src/invariant.ts companion with positive and negative test paths. - Use Case: After planning and scaffolding a new DSH plugin (such as a background type-checker), use this Skill to implement the approved handoff—writing src/index.ts, src/config.ts, src/runtime.ts, tests, README, and cordis.patch.yml—so the plugin loads correctly in a DSH profile. ## Quick Start Use the dsh-plugin-implement skill to implement the planned standalone DSH plugin including its invariant, documentation, and focused tests.
