course

# course Resolve all bundled paths from this SKILL.md file, never from a hard-coded agent installation directory. The plugin root is two directories above this skill. The complete `yes` plugin is the supported installation unit. Write and revise local source files. Deliver a single self-contained HTML file by default, or an HTML + assets bundle when requested. Keep essential viewing features usable without network access or persistent storage. Do not upload, publish, or change visibility unless requested. Review the actual rendered output on desktop and mobile; report unavailable checks honestly. Read [the authoring guide](references/authoring.md) for schemas and runtime behavior. Run `uv run <this-skill-dir>/build.py build <course-dir>`. Add `--format bundle` for a sibling `<name>-bundle/index.html` and assets directory; otherwise the output is one HTML file. `--max-bytes N` optionally enforces a host limit. Run `shoot` and `check` after building. Progress is local to the browser and may be unavailable in sandboxed viewers; it is not a server-backed learner account. A host page that offers its own store can keep progress there: pass `--host-script FILE` defining `window.YESHost.storage` (see the authoring guide). Write the learning brief with the sibling `design` skill, then plan the lessons, brief one writer per lesson with `lesson-brief.md`, and edit the drafts before building; the orchestration steps are in the authoring guide.