Function build_forensic_bundle 

pub fn build_forensic_bundle(
    extension_id: &str,
    overlay: Option<&OverlayArtifact>,
    verification: Option<&VerificationBundle>,
    ledger: &AuditLedger,
    collector: &TelemetryCollector,
    health_report: Option<&HealthReport>,
    checksum_manifest: Option<&GoldenChecksumManifest>,
    exported_at_ms: u64,
) -> ForensicBundle

Build a forensic bundle from available state.