Function unavailableAstEvidence

Returns {
    artifact:
        | { artifact_id: string; available: true; sha256: string }
        | {
            available: false;
            detail: string;
            reason:
                | "unknown"
                | "truncated"
                | "unresolved"
                | "not-applicable"
                | "not-observed"
                | "not-approved"
                | "provider-unavailable";
        };
    authority: | "unknown"
    | "controlled-replay"
    | "historical-reference"
    | "artifact-bytes"
    | "ast-static-analysis"
    | "static-relationship-inference"
    | "passive-cdp-runtime"
    | "cross-layer-reconciliation"
    | "cross-version-comparison"
    | "native-analysis-provider"
    | "managed-static-analysis"
    | "user-assertion";
    confidence: "unknown"
    | "exact"
    | "low"
    | "medium"
    | "high";
    coverage: {
        limits: {
            name: string;
            unit:
                | "other"
                | "items"
                | "bytes"
                | "depth"
                | "milliseconds"
                | "characters"
                | "instructions";
            value: number;
        }[];
        omitted_count: number
        | null;
        status: "unknown" | "unavailable" | "complete" | "partial";
        truncated: boolean;
    };
    evidence_ids: string[];
    extractor: {
        executable_sha256: string
        | null;
        name: string;
        operation: string;
        version: string;
    };
    limitations: string[];
    location: | {
        available: false;
        detail: string;
        reason: | "unknown"
        | "truncated"
        | "unresolved"
        | "not-applicable"
        | "not-observed"
        | "not-approved"
        | "provider-unavailable";
    }
    | {
        available: true;
        value: | {
            end: { column: number; line: number };
            kind: "source-range";
            source: string;
            start: { column: number; line: number };
        }
        | { end: number; kind: "file-offset-range"; start: number }
        | { kind: "artifact-path"; path: string }
        | { kind: "url"; url: string }
        | {
            capture_sha256: string;
            frame_key: string | null;
            kind: "runtime";
            script_key: string | null;
            target_key: string;
        }
        | { address: string; kind: "native-address"; symbol: string
        | null }
        | { export_path: string; kind: "package-export"; package_name: string };
    };
    state: "unknown"
    | "observed"
    | "inferred"
    | "unavailable";
}