Conflicts in UPGRADE.md and docs/schema-postgres.sql: kept develop's
durable-turns and starter-defaults notes and DDL; the index audit block
now follows the durable-turns block at the end of the schema.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The reference Postgres schema gains six IF NOT EXISTS indexes:
- assistant_usage (turn_id): ScheduledTurn.cost
- assistant_turn_event (create_date), assistant_tool_call (create_date) and
assistant_conversation (modify_date): the retention filters
- assistant_scheduled_run (conversation_id) and (turn_id): the ON DELETE
SET NULL foreign keys
UPGRADE.md notes them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>