ATV-PaperBoard

Bind agent-authored `.DESIGN.md` files to paperboard's design doctrine. Loads the impeccable anti-slop methodology (vendored, Apache 2.0, pinned to commit `4af581e23f17d112d8f9d6b7a5b7ff37823494e1`) and the binding rules in `core/designs/DESIGN-AUTHORITY.md`. Read these BEFORE writing or editing any `.DESIGN.md` file.

Render a structured input (JSON or Markdown) into a paired HTML + DESIGN.md + meta.yaml artifact triple. Serves the result on loopback HTTP and opens a browser tab (unless running headless/remote). Invokes `paperboard render` via the atv-paperboard CLI.

Regenerate the Paperboard Gallery — a local HTML index of all rendered artifact triples. Invokes `paperboard gallery` via the atv-paperboard CLI.

3-step differentiated retry for a failing artifact slug: switch tier, drop optional components, fall back to default design. Invokes `paperboard regenerate`.

Run ENFORCE checks on a rendered artifact slug: Google design.md lint + HTML-side color-token trace. Reports ACCEPT or FAIL with fail_class. Invokes `paperboard validate`.