feat: support per-agent memory retention overrides #209
Description
Summary
Memory retention is currently per-category only. The spec acknowledges this as a scope gap — per-agent retention overrides are needed.
Design Spec Reference
- §7.5 Consolidation & Retention Configuration — note at end
Scope
- Per-agent retention configuration (override category-level defaults)
- Integration with
RetentionEnforcer - Config model extension