Christian Galo
15e1a59fe7
Add entitlement_sets and entitlement_set_rules with seed data and a migration that backfills products, grants, and pool_provisions, then removes product_entitlement_rules. Update Go models, sqlc queries, materialization, and grant/provision flows to use entitlement_set_id. Fix assembleMigrations to assign stable per-module numeric namespaces. Move DB docs to docs/database-management.md and add design/specs/tests.