[
  {
    "_note": "img+cd ensemble with PairwiseAdditiveBridge — for N=2 this reduces to a single weighted (1+a)(1+b)-1 fusion (≈ FusionBridge additive=True). 3 reps.",
    "run_name": "experiments/tri_v1/altbridge/ensemble_pairwise",
    "reps": 3,
    "stage_overrides": {
      "nt": {
        "module": "v4.classes.bridges.pairwise_bridge",
        "class":  "PairwiseAdditiveBridge",
        "args":   { "fusion_dim": 256 }
      }
    }
  }
]