{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Acceptance Pack (Stub)",
  "description": "Schema stub for AT1–AT10 guardrail pack; to be finalized with signed DSSE envelope.",
  "type": "object",
  "properties": {
    "pack_id": { "type": "string" },
    "version": { "type": "string" },
    "inputs_lock": { "type": "string", "description": "Path to pinned versions/seeds." },
    "signers": {
      "type": "array",
      "items": { "type": "string" },
      "description": "Key IDs that signed the DSSE envelope for this pack"
    },
    "fixtures": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": { "type": "string" },
          "seed": { "type": "integer" },
          "expected": { "type": "string" },
          "artifact": { "type": "string", "description": "Path to fixture artifact" }
        },
        "required": ["id", "expected"]
      }
    }
  },
  "required": ["pack_id", "version", "fixtures"]
}