eidetic-engine 0.15.2

Durable, local-first, explainable memory for coding agents.
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{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://eidetic-engine/schemas/ee.graph.diff.v1.json",
  "title": "ee.graph.diff.v1",
  "description": "Temporal structural diff between two PERSISTED graph snapshots of one family (ADR 0066): node/edge add/remove sets (content-hash keyed, deterministically ordered — diff(A,B) sets are exact complements of diff(B,A)), community deltas via best-overlap fingerprint matching (member-set Jaccard >= 0.5 is the same community; below threshold reports birth/death; membership churn listed), and top-N centrality movers ranked by |delta pagerank| from the centrality values persisted inside each snapshot — never recomputed inline; nodes missing a persisted value on either side are honestly omitted and counted. Summary counts come first; every detail array is bounded at the declared governor truncation point.",
  "type": "object",
  "required": [
    "schema",
    "graphType",
    "from",
    "to",
    "summary",
    "nodesAdded",
    "nodesRemoved",
    "edgesAdded",
    "edgesRemoved",
    "communities",
    "movers",
    "detailCap",
    "truncated"
  ],
  "additionalProperties": false,
  "properties": {
    "schema": {
      "type": "string",
      "const": "ee.graph.diff.v1"
    },
    "graphType": {
      "type": "string"
    },
    "from": {
      "$ref": "#/$defs/snapshotRef"
    },
    "to": {
      "$ref": "#/$defs/snapshotRef"
    },
    "summary": {
      "type": "object",
      "required": [
        "nodesAdded",
        "nodesRemoved",
        "edgesAdded",
        "edgesRemoved",
        "communitiesMatched",
        "communityBirths",
        "communityDeaths",
        "centralityMovers",
        "centralityOmitted"
      ],
      "additionalProperties": false,
      "properties": {
        "nodesAdded": { "type": "integer", "minimum": 0 },
        "nodesRemoved": { "type": "integer", "minimum": 0 },
        "edgesAdded": { "type": "integer", "minimum": 0 },
        "edgesRemoved": { "type": "integer", "minimum": 0 },
        "communitiesMatched": { "type": "integer", "minimum": 0 },
        "communityBirths": { "type": "integer", "minimum": 0 },
        "communityDeaths": { "type": "integer", "minimum": 0 },
        "centralityMovers": { "type": "integer", "minimum": 0 },
        "centralityOmitted": { "type": "integer", "minimum": 0 }
      }
    },
    "nodesAdded": {
      "type": "array",
      "items": { "type": "string" }
    },
    "nodesRemoved": {
      "type": "array",
      "items": { "type": "string" }
    },
    "edgesAdded": {
      "type": "array",
      "items": { "$ref": "#/$defs/edge" }
    },
    "edgesRemoved": {
      "type": "array",
      "items": { "$ref": "#/$defs/edge" }
    },
    "communities": {
      "type": "object",
      "required": ["matched", "births", "deaths", "unchanged"],
      "additionalProperties": false,
      "properties": {
        "matched": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["fromFingerprint", "toFingerprint", "jaccard", "joined", "left"],
            "additionalProperties": false,
            "properties": {
              "fromFingerprint": { "type": "string" },
              "toFingerprint": { "type": "string" },
              "jaccard": { "type": "number", "minimum": 0.0, "maximum": 1.0 },
              "joined": { "type": "array", "items": { "type": "string" } },
              "left": { "type": "array", "items": { "type": "string" } }
            }
          }
        },
        "births": {
          "type": "array",
          "items": { "$ref": "#/$defs/communityEndpoint" }
        },
        "deaths": {
          "type": "array",
          "items": { "$ref": "#/$defs/communityEndpoint" }
        },
        "unchanged": { "type": "integer", "minimum": 0 }
      }
    },
    "movers": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["memoryId", "fromPagerank", "toPagerank", "delta"],
        "additionalProperties": false,
        "properties": {
          "memoryId": { "type": "string" },
          "fromPagerank": { "type": "number" },
          "toPagerank": { "type": "number" },
          "delta": { "type": "number" }
        }
      }
    },
    "detailCap": {
      "type": "integer",
      "minimum": 1
    },
    "truncated": {
      "type": "object",
      "required": ["nodesAdded", "nodesRemoved", "edgesAdded", "edgesRemoved"],
      "additionalProperties": false,
      "properties": {
        "nodesAdded": { "type": "boolean" },
        "nodesRemoved": { "type": "boolean" },
        "edgesAdded": { "type": "boolean" },
        "edgesRemoved": { "type": "boolean" }
      }
    }
  },
  "$defs": {
    "snapshotRef": {
      "type": "object",
      "required": ["snapshotId", "snapshotVersion", "createdAt", "nodeCount", "edgeCount"],
      "additionalProperties": false,
      "properties": {
        "snapshotId": { "type": "string" },
        "snapshotVersion": { "type": "integer", "minimum": 0 },
        "createdAt": { "type": "string" },
        "nodeCount": { "type": "integer", "minimum": 0 },
        "edgeCount": { "type": "integer", "minimum": 0 }
      }
    },
    "edge": {
      "type": "object",
      "required": ["key", "source", "target", "relation", "directed"],
      "additionalProperties": false,
      "properties": {
        "key": { "type": "string" },
        "source": { "type": "string" },
        "target": { "type": "string" },
        "relation": { "type": "string" },
        "directed": { "type": "boolean" }
      }
    }
  }
}