## Summary
- **Split the `rolesPermissions` cache query into parallel queries** to
eliminate a 5-way LEFT JOIN cartesian product. A workspace with a role
having 5 objectPermissions × 4 permissionFlags × 124 fieldPermissions ×
5 RLP predicates × 5 RLP groups was returning 62,000 rows from just ~162
distinct records, causing 10s+ query timeouts on view updates.
- **Added missing `roleId` index on `permissionFlag` table** — the only
permission table without one, which was causing sequential scans on the
JOIN.
