Add `make optimize-power` (ryzenadj 85W, sysctl, THP, RADV nogttspill) with systemd services for boot/resume persistence. Integrate into `make optimize --all` as Phase 2. Update optimization log with RyzenAdj results (+46% tg at 70W sustained), KV sweep data, and quant shootout. Add Qwen3-Coder-30B and Nemotron-Cascade-2 to model catalog.