nessar
6811142299
Evaluate explicit, ordered optimization configurations through one shared planner model. Add six editable presets, durable one-time legacy migration, and consistent completed and cancelled plan provenance. Include functional regressions and the agreed trace-removal and benchmark follow-up specs. Performance acceptance remains in #78 under unchanged gates. Refs: #70, #71, #72, #73, #74, #75, #76, #77, #78