export interface GraphSubgraphSource {
    /** Provider-assigned identifier for this source (e.g. Slack channel ID). */
    appExternalId?: string;
    /** App integration category, populated for connector-synced sources. */
    appKind?: string;
    /** Provider name for app-sourced items (e.g. `slack`, `github`). */
    appProvider?: string;
    /** Depth is the BFS distance from the seed (0 for the seed itself). */
    depth?: number;
    discoveredRelation?: string;
    /**
     * DiscoveredVia and DiscoveredRelation record the traversal provenance:
     * which already-admitted source this member was first reached from, and
     * through which mechanism — a RELATES_TO relation_type (reply_to,
     * child_of, ...), same_thread, parent or child. Empty on the seed.
     */
    discoveredVia?: string;
    /**
     * Hydration carries the same resolved/stub/placeholder classification
     * Entity.Hydration documents: a RELATES_TO target may be a MERGE-created
     * forward reference to a document that has not been ingested yet.
     */
    hydration?: string;
    sourceId?: string;
    threadId?: string;
    /** Title or name of the source. */
    title?: string;
}