Module retention 

Retention policy engine — auto-purge expired data.

Never deletes silently: every purge is logged to backup_purge_log and emits a PurgeEvent for SSE streaming.

Functions

load_org_rules

Load org-specific retention rules (override defaults).

load_rules

Load retention rules from the database. Falls back to default rules if none are configured.

purge_table

Execute purge for a single retention rule. Returns a PurgeEvent.

run_auto_purge

Run auto-purge for all configured retention rules.

save_rule

Save a retention rule to the database.