{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://smartergpt.dev/schemas/analysis-pool.v1.schema.json",
  "title": "AnalysisPool",
  "description": "D1 output: deterministic facts extracted from HarvestBundle (no recommendations)",
  "type": "object",
  "required": ["schemaVersion", "phase", "timestamp", "inputDigest", "pool", "outputDigest"],
  "properties": {
    "schemaVersion": {
      "type": "string",
      "const": "1.0.0"
    },
    "phase": {
      "type": "string",
      "const": "D1"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 UTC timestamp"
    },
    "inputDigest": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$",
      "description": "Must match HarvestBundle.outputDigest"
    },
    "pool": {
      "$ref": "#/$defs/Pool"
    },
    "outputDigest": {
      "type": "string",
      "pattern": "^sha256:[a-f0-9]{64}$",
      "description": "SHA256 digest of pool content"
    }
  },
  "$defs": {
    "Pool": {
      "type": "object",
      "required": ["entities", "relations", "conflicts", "blockers"],
      "properties": {
        "entities": {
          "type": "array",
          "items": { "$ref": "#/$defs/Entity" },
          "description": "Normalized entities with EIDs"
        },
        "relations": {
          "type": "array",
          "items": { "$ref": "#/$defs/Relation" },
          "description": "Relationships between entities"
        },
        "conflicts": {
          "type": "array",
          "items": { "$ref": "#/$defs/Conflict" },
          "description": "Detected merge conflicts"
        },
        "blockers": {
          "type": "array",
          "items": { "$ref": "#/$defs/Blocker" },
          "description": "Facts that prevent forward progress"
        }
      }
    },
    "Entity": {
      "type": "object",
      "required": ["eid", "type", "ref", "facts"],
      "properties": {
        "eid": {
          "type": "string",
          "pattern": "^(PR|ISSUE|COMMIT|BRANCH):[0-9a-f]+$",
          "description": "Unique entity ID (e.g., PR:42, COMMIT:abc123)"
        },
        "type": {
          "type": "string",
          "enum": ["pull_request", "issue", "commit", "branch"]
        },
        "ref": {
          "type": "string",
          "description": "Source reference (e.g., '#42', 'abc1234')"
        },
        "facts": {
          "type": "array",
          "items": { "$ref": "#/$defs/Fact" },
          "description": "Verified facts about this entity"
        }
      }
    },
    "Fact": {
      "type": "object",
      "required": ["key", "value", "source"],
      "properties": {
        "key": {
          "type": "string",
          "description": "Fact name (e.g., 'ci_status', 'review_state', 'has_conflicts')"
        },
        "value": {
          "oneOf": [
            { "type": "string" },
            { "type": "boolean" },
            { "type": "integer" },
            { "type": "array", "items": { "type": "string" } }
          ]
        },
        "source": {
          "type": "string",
          "enum": ["api", "computed", "inferred"],
          "description": "How this fact was derived"
        },
        "confidence": {
          "type": "string",
          "enum": ["known", "unknown", "unavailable"],
          "default": "known",
          "description": "Confidence level (unknown means not enough data)"
        }
      }
    },
    "Relation": {
      "type": "object",
      "required": ["type", "from", "to", "source"],
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "depends_on",
            "blocks",
            "implements",
            "references",
            "modifies_same_file",
            "branches_from"
          ]
        },
        "from": {
          "type": "string",
          "description": "Source entity EID"
        },
        "to": {
          "type": "string",
          "description": "Target entity EID"
        },
        "source": {
          "type": "string",
          "enum": ["label", "body_parse", "file_overlap", "git", "explicit"],
          "description": "How this relation was discovered"
        },
        "confidence": {
          "type": "string",
          "enum": ["known", "inferred"],
          "default": "known"
        }
      }
    },
    "Conflict": {
      "type": "object",
      "required": ["type", "entities"],
      "properties": {
        "type": {
          "type": "string",
          "enum": ["merge_conflict", "file_overlap", "semantic_conflict"]
        },
        "entities": {
          "type": "array",
          "items": { "type": "string" },
          "description": "List of EIDs involved in conflict"
        },
        "files": {
          "type": "array",
          "items": { "type": "string" },
          "description": "File paths involved (if applicable)"
        },
        "resolution": {
          "type": "string",
          "enum": ["unknown", "requires_rebase", "requires_manual"],
          "description": "Known resolution strategy (or unknown)"
        }
      }
    },
    "Blocker": {
      "type": "object",
      "required": ["type", "entity", "reason"],
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "ci_failed",
            "review_pending",
            "review_rejected",
            "merge_conflict",
            "missing_dependency",
            "draft"
          ]
        },
        "entity": {
          "type": "string",
          "description": "EID of the blocked entity"
        },
        "reason": {
          "type": "string",
          "description": "Factual description (no prose, no recommendations)"
        }
      }
    }
  }
}