Migration 022 adds two new tables for collective-scoped item tags plus the
many-to-many bridge to shopping_items. Tags carry a colour from an 8-preset
palette enforced by CHECK. RLS uses is_member for SELECT (guests can see)
and is_active_member for writes (guests are read-only). A new STABLE helper
item_collective_id(uuid) resolves the parent collective in a single function
call so the shopping_item_tags policies do not chain two STABLE lookups.
Both tables join the supabase_realtime publication with REPLICA IDENTITY
FULL, matching the shape of 007 for shopping_items / shopping_lists.
pgTAP 014 covers schema invariants (publication, replica identity, unique
+ CHECK constraints, cascade behaviour for both tag delete and collective
delete). Per-role RLS semantics will be covered by the Vitest integration
suite in the next commit — pgTAP runs as postgres which bypasses RLS.
Types: ItemTag, ItemWithTags + ItemTagColor in domain.ts; item_tags,
shopping_item_tags, item_collective_id added by hand to the curated
database.ts (the supabase CLI is not installed locally; just db-types is
gated and skips with a notice).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Oier Bravo Urtasun
4c3552fb3c