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Scheduler: on re-run, reads existing experiment_summary.json and skips already-completed experiments — safe to stop and restart mid-sweep. tier1_thorough: adds g5 (lr 3e-5/3e-4), g6 (full target attn.qkv+linear1 at r16 and r64), and g4_full_r64_6k (6000-step extended run) — 17 total. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>