M1 t06-iter on main: CSV fixes from priv0.083 run

TTS restore M1 v4: /think + system + force-close (was softend)

Fix LogitsProcessor import path for Space transformers 4.56

Soft end-think + user instr + greedy answer (iter vs temp0.6 ablation)

Decode ablation: temp 0.6 + user-prompt instructions (vs greedy system-prompt v4)

v4: force-close think + parser v3 + CoT on format fail (T4 30min budgets)

Bakeoff v3: prompt+parser; M1 /think; force-close 1536+512

Initial M1 hf_export + bakeoff script.py