Roadmap recommended order — moved

Consolidated into docs/PLAN.md §3.

Roadmap — recommended order

Superseded by the master plan §3 Tier A/B/C ordering. The top-10 in the old version (NEFTune, Magpie, seq packing, distillation, SimPO, ES, QLoRA, ORPO, browser bench, grad clip) is mostly shipped — see §1.