{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/Rul1an/assay/main/docs/reference/runner/schema/runtime-drift-v0.2.schema.json",
  "title": "Assay Runner Runtime Drift Projection v0.2",
  "description": "Projection artifact emitted by the cross-runtime drift comparator. Raw evidence stays in the source Runner archives; this report records raw set differences plus declared projection views, taxonomy metadata, and provenance anchors.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "archive_a",
    "archive_b",
    "taxonomy",
    "provenance",
    "rows",
    "summary"
  ],
  "properties": {
    "schema": {
      "const": "assay.runner.runtime_drift.v0.2"
    },
    "archive_a": {
      "$ref": "#/$defs/archive_ref"
    },
    "archive_b": {
      "$ref": "#/$defs/archive_ref"
    },
    "taxonomy": {
      "$ref": "#/$defs/taxonomy"
    },
    "provenance": {
      "$ref": "#/$defs/provenance"
    },
    "rows": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/drift_row"
      }
    },
    "summary": {
      "$ref": "#/$defs/summary"
    }
  },
  "$defs": {
    "sha256_digest": {
      "type": "string",
      "pattern": "^sha256:[0-9a-f]{64}$"
    },
    "nullable_string": {
      "type": [
        "string",
        "null"
      ]
    },
    "git_sha_or_null": {
      "type": [
        "string",
        "null"
      ],
      "pattern": "^[0-9a-f]{7,64}$",
      "description": "Full Git object id or unambiguous abbreviation. Allows SHA-1 and SHA-256 era Git object ids."
    },
    "string_array": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "nullable_boolean": {
      "type": [
        "boolean",
        "null"
      ]
    },
    "archive_ref": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "path",
        "run_id",
        "runtime_label",
        "manifest_digest",
        "sdk_event_count"
      ],
      "properties": {
        "path": {
          "type": "string",
          "description": "Archive path as emitted by the comparator. Committed re-renders normally use repo-root-relative paths; fresh workflow captures may use capture-host absolute paths."
        },
        "run_id": {
          "$ref": "#/$defs/nullable_string"
        },
        "runtime_label": {
          "$ref": "#/$defs/nullable_string"
        },
        "manifest_digest": {
          "$ref": "#/$defs/sha256_digest"
        },
        "sdk_event_count": {
          "type": "integer",
          "minimum": 0
        }
      }
    },
    "taxonomy": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "schema",
        "status",
        "categories",
        "non_claims"
      ],
      "properties": {
        "schema": {
          "const": "assay.runner.runtime_noise_taxonomy.v0"
        },
        "status": {
          "const": "vocabulary_only"
        },
        "categories": {
          "type": "object"
        },
        "non_claims": {
          "$ref": "#/$defs/string_array"
        }
      }
    },
    "provenance": {
      "type": "object",
      "additionalProperties": true,
      "required": [
        "schema",
        "assay_commit",
        "render_metadata",
        "input_archives",
        "runner_schema_versions",
        "kernel",
        "workflow",
        "non_claims"
      ],
      "properties": {
        "schema": {
          "const": "assay.runner.drift_report_provenance.v0"
        },
        "assay_commit": {
          "$ref": "#/$defs/git_sha_or_null"
        },
        "render_metadata": {
          "$ref": "#/$defs/render_metadata"
        },
        "input_archives": {
          "type": "array",
          "minItems": 2,
          "maxItems": 2,
          "items": {
            "type": "object"
          }
        },
        "runner_schema_versions": {
          "type": "object"
        },
        "kernel": {
          "type": "object"
        },
        "workflow": {
          "type": "object"
        },
        "non_claims": {
          "$ref": "#/$defs/string_array"
        }
      }
    },
    "render_metadata": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "kind",
        "rendered_at",
        "comparator_commit",
        "source_run_url",
        "raw_captures_unchanged"
      ],
      "properties": {
        "kind": {
          "enum": [
            "live_capture",
            "re_render",
            "synthetic_fixture",
            "unspecified"
          ]
        },
        "rendered_at": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time"
        },
        "comparator_commit": {
          "$ref": "#/$defs/git_sha_or_null"
        },
        "source_run_url": {
          "$ref": "#/$defs/nullable_string"
        },
        "raw_captures_unchanged": {
          "$ref": "#/$defs/nullable_boolean"
        }
      }
    },
    "classification": {
      "enum": [
        "task-induced",
        "provider-induced",
        "runtime-induced",
        "inconclusive"
      ]
    },
    "projection": {
      "type": "object",
      "additionalProperties": true,
      "required": [
        "schema",
        "status",
        "taxonomy_schema",
        "non_claims"
      ],
      "allOf": [
        {
          "if": {
            "properties": {
              "status": {
                "const": "applied"
              }
            }
          },
          "then": {
            "required": [
              "claim_level",
              "only_in_a",
              "only_in_b",
              "in_both",
              "rules",
              "mappings",
              "unmatched_summary"
            ]
          }
        }
      ],
      "properties": {
        "schema": {
          "enum": [
            "assay.runner.path_projection.v0",
            "assay.runner.network_projection.v0",
            "assay.runner.projection_not_applied.v0"
          ]
        },
        "status": {
          "enum": [
            "applied",
            "not_applied"
          ]
        },
        "taxonomy_schema": {
          "const": "assay.runner.runtime_noise_taxonomy.v0"
        },
        "claim_level": {
          "enum": [
            "raw_observed",
            "projected_equivalent",
            "inconclusive"
          ]
        },
        "only_in_a": {
          "$ref": "#/$defs/string_array"
        },
        "only_in_b": {
          "$ref": "#/$defs/string_array"
        },
        "in_both": {
          "$ref": "#/$defs/string_array"
        },
        "rules": {
          "$ref": "#/$defs/string_array"
        },
        "mappings": {
          "type": "array",
          "items": {
            "type": "object"
          }
        },
        "unmatched_summary": {
          "$ref": "#/$defs/unmatched_summary"
        },
        "non_claims": {
          "$ref": "#/$defs/string_array"
        }
      }
    },
    "unmatched_summary": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "a",
        "b"
      ],
      "properties": {
        "a": {
          "$ref": "#/$defs/unmatched_arm_a"
        },
        "b": {
          "$ref": "#/$defs/unmatched_arm_b"
        }
      }
    },
    "unmatched_arm_a": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "side",
        "count",
        "samples",
        "sample_limit"
      ],
      "properties": {
        "side": {
          "const": "a"
        },
        "count": {
          "type": "integer",
          "minimum": 0
        },
        "samples": {
          "$ref": "#/$defs/string_array"
        },
        "sample_limit": {
          "type": "integer",
          "minimum": 0
        }
      }
    },
    "unmatched_arm_b": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "side",
        "count",
        "samples",
        "sample_limit"
      ],
      "properties": {
        "side": {
          "const": "b"
        },
        "count": {
          "type": "integer",
          "minimum": 0
        },
        "samples": {
          "$ref": "#/$defs/string_array"
        },
        "sample_limit": {
          "type": "integer",
          "minimum": 0
        }
      }
    },
    "drift_row": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "dimension",
        "source",
        "only_in_a",
        "only_in_b",
        "in_both",
        "classification",
        "detail",
        "projection"
      ],
      "properties": {
        "dimension": {
          "type": "string"
        },
        "source": {
          "type": "string"
        },
        "only_in_a": {
          "$ref": "#/$defs/string_array"
        },
        "only_in_b": {
          "$ref": "#/$defs/string_array"
        },
        "in_both": {
          "$ref": "#/$defs/string_array"
        },
        "classification": {
          "$ref": "#/$defs/classification"
        },
        "detail": {
          "type": "string"
        },
        "projection": {
          "$ref": "#/$defs/projection"
        }
      }
    },
    "summary": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "dimensions_checked",
        "task_induced",
        "provider_induced",
        "runtime_induced",
        "inconclusive"
      ],
      "properties": {
        "dimensions_checked": {
          "type": "integer",
          "minimum": 0
        },
        "task_induced": {
          "type": "integer",
          "minimum": 0
        },
        "provider_induced": {
          "type": "integer",
          "minimum": 0
        },
        "runtime_induced": {
          "type": "integer",
          "minimum": 0
        },
        "inconclusive": {
          "type": "integer",
          "minimum": 0
        }
      }
    }
  }
}