portaljs-add-resource

# PortalJS — Add Resource ## Overview Add a resource — an additional file — to a dataset that already exists in a `portaljs-catalog` portal. Where `/portaljs-add-dataset` creates a **new** dataset (one file), this skill adds a file to an **existing** one: a data dictionary, a methodology document, or another data file (e.g. a second year's figures). Mirrors the Frictionless Data Package model: a dataset holds a `resources[]` array, and the showcase at `/@<namespace>/<slug>` renders one section per resource (preview, schema, download). A single-file dataset migrates to `resources[]` automatically the first time a second file is added — no data is lost. ## Prerequisites - An existing PortalJS portal (`portaljs-catalog` template) with `datasets.json`, `package.json`, and `pages/[owner]/[slug].tsx` present. - The target dataset already registered in `datasets.json`. - The new resource's source: a local file path or a public URL, in CSV, TSV, JSON (array), or GeoJSON format. - Node 18+ installed to run `npx next build` for verification. ## Instructions The canonical, full step-by-step workflow lives in [`.claude/commands/portaljs-add-resource.md`](https://github.com/datopian/portaljs/blob/main/.claude/commands/portaljs-add-resource.md) in this repository — that file is the single source of truth. Read and follow it. Summary: 1. Gather input (interview if thin): `DATASET` (slug or `namespace/slug`), `SOURCE` (path or URL), `PORTAL_DIR` (default `.`), `RESOURCE_NAME`,...