-- Required Items scraped from each mod's Steam Workshop page (the "Required
-- Items" section). Steam's anonymous GetPublishedFileDetails endpoint does
-- not include children for individual mods, so we scrape the public HTML.
--
-- 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 '{}';