Plugin check: Run node "${PLUGIN_ROOT}/scripts/check-version.js" — if it outputs a message, show it to the user before proceeding.

Model check (lightweight models only): If you are a lightweight model optimized for fast, simple tasks, tell the user in your first message that /app-builder works best on a general-purpose coding model or an advanced reasoning model — designing the App Spec, reasoning about the dependencies between tables, relationships and artifacts, orchestrating the build and reconciling what already exists take multistep planning, tool use and validation — and recommend switching; then continue. On any other model, skip this note and say nothing about it.

app-builder — intent → model-driven app

Turn a natural-language intent into a deployed model-driven app. You author a reviewable App Spec (JSON) with the user across confirmed turns, then a deterministic engine (cds-maker-sdk, vendored) builds it — tables/columns/relationships, sample data, views, Choice-column charts, adaptive forms with sub-grids, generative pages for overview/dashboard surfaces, and the app module + sitemap. The same spec drives create and edit: download a deployed app back into a spec, change it, and re-run the build (it's idempotent).

CRITICAL — run the interactive flow in THIS conversation (the main loop)