{
  "component": "nexa_mat_cross_attention_contract_v1",
  "status": "interface_contract",
  "purpose": "condition diffusion proposals and multimodal controller evidence on shared structure, text, task, and model-state lanes",
  "lanes": [
    {
      "name": "structure_latent",
      "producer": "encoder/v1/nexa_mat_V1_final.safetensors",
      "consumer": "diffusion decoder and controller"
    },
    {
      "name": "diffusion_state",
      "producer": "decoder/diffusion_v1/final_checkpoint.safetensors",
      "consumer": "controller ranking and evidence packet"
    },
    {
      "name": "text_intent",
      "producer": "Qwen controller tokens",
      "consumer": "diffusion conditioning and reverse ranking"
    },
    {
      "name": "evidence_context",
      "producer": "retrieval/controller",
      "consumer": "decision layer"
    },
    {
      "name": "task_heads",
      "producer": "SSB/battery-ion adapters",
      "consumer": "reverse pool scoring and use-case constraints"
    }
  ],
  "forward_flow": "constraints -> controller intent tokens -> diffusion proposals -> encoder plausibility scoring -> controller evidence and ranking",
  "reverse_flow": "candidate pool -> encoder/task/evidence scoring -> optional decoder expansion -> controller rank/filter/explain"
}