Root cause: migration 20260129235248_add_link_storage_fields dropped the
personalities table and FormalityLevel enum, but migration
20260208000000_add_missing_tables later references personalities in a FK
constraint, causing ERROR: relation "personalities" does not exist on any
fresh database deployment.
Fix 1 — 20260208000000_add_missing_tables:
Recreate FormalityLevel enum and personalities table (with current schema
structure) at the top of the migration, before the FK constraint.
Fix 2 — New migration 20260215100000_fix_schema_drift:
- Create missing instances table (Federation module, never migrated)
- Recreate knowledge_links unique index (dropped, never recreated)
- Add 7 missing @@unique([id, workspaceId]) composite indexes
- Add missing agent_tasks.agent_type index
Verified: all 27 migrations apply cleanly on a fresh PostgreSQL 17 database
with pgvector.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
