{
  "$schema":"https://json-schema.org/draft/2020-12/schema",
  "$id":"https://compo.kluchna24.ru/schemas/compo-creative-engine/v1/layout-candidate-set.schema.json",
  "title":"COMPO bounded layout candidate set v1",
  "type":"object","additionalProperties":false,
  "required":["schema","planner_run_id","request_id","candidates","rejected_candidates","review_required","mutation_allowed"],
  "properties":{
    "schema":{"const":"compo-creative-engine/v1/layout-candidate-set"},
    "planner_run_id":{"type":"string","minLength":8},"request_id":{"type":"string","minLength":1},
    "candidates":{"type":"array","minItems":1,"maxItems":32,"items":{"$ref":"#/$defs/candidateRef"}},
    "rejected_candidates":{"type":"array","maxItems":128,"items":{"$ref":"#/$defs/rejection"}},
    "review_required":{"const":true},"mutation_allowed":{"const":false},
    "planner_provenance":{"type":"array","minItems":1,"items":{"type":"string"}}
  },
  "$defs":{
    "candidateRef":{"type":"object","additionalProperties":false,"required":["candidate_ref","rank_hint","status","evidence_refs"],"properties":{"candidate_ref":{"type":"string","minLength":1},"rank_hint":{"type":"integer","minimum":1,"maximum":32},"status":{"type":"string","enum":["proposed","unknown"]},"evidence_refs":{"type":"array","minItems":1,"items":{"type":"string"}},"distinctive_axis":{"type":"string","enum":["scale","alignment","whitespace","contrast","rhythm","unknown"]}}},
    "rejection":{"type":"object","additionalProperties":false,"required":["candidate_ref","reason_code","evidence_refs"],"properties":{"candidate_ref":{"type":"string","minLength":1},"reason_code":{"type":"string","enum":["out_of_bounds","semantic_collision","missing_asset","constraint_conflict","unknown"]},"evidence_refs":{"type":"array","minItems":1,"items":{"type":"string"}},"repairable":{"type":"boolean"}}}
  }
}