-- Required Items pulled from each mod's Steam "Required Items" sidebar.
-- Originally scraped from the public Workshop HTML page (the anonymous
-- GetPublishedFileDetails endpoint omits `children` for individual mods);
-- worker.fetch_required_wsids now uses authenticated IPublishedFileService/
-- GetDetails with includechildren=true and gets the same data structurally.
--
-- Use cases:
--   1. Auto-resolving missing-dep warnings: when a cached mod_id Y is
--      missing dep X, we look at Y's source wsid's required_wsids and
--      auto-queue any uncached wsids — the next sort resolves X.
--   2. Surfacing "↗ add <wsid>" actions for unresolved deps so the user
--      can pull them with one click.
ALTER TABLE workshop_meta
    ADD COLUMN IF NOT EXISTS required_wsids TEXT[] NOT NULL DEFAULT '{}';