Function buildReleaseManifest

Returns {
    artifacts: {
        dockerImageSha256: string;
        licensesSha256: string;
        npmTgzSha256: string;
        provenanceSha256: string;
        sbomSha256: string;
        secretScanSha256: string;
    };
    generatedTs: number;
    package: {
        git: { commit: string; dirty: boolean; tag: string
        | null };
        name: "agent-maturity-compass";
        node: string;
        version: string;
    };
    signing: { algorithm: "ed25519"; pubkeyFingerprint: string };
    v: 1;
}