nx_uxf_media_asset_gate.nx

nx_uxf_media_asset_gate.nx -- the D001 MIGRATION of nx_uxf_media_asset_test onto nx_gate_verdict (2026-09-06). THIS IS THE ONE THAT TIES THE FAMILY TOGETHER. A media descriptor becomes a canonical record, is stamped with a self-describing UXF_MEDIA profiled CID, is TOLERANT-DECODED by a consumer that did not write it, and the decoded fields then drive endpoint negotiation. It proves the unified claim end to end: the SAME envelope that carried migrated TSV rows carries media and decides what to emit. ALL FIVE ORIGINAL TEETH PRESERVED IN ORDER AND PREDICATE, plus two the original lacked. It looked up the chrome capability row and NEVER asserted the lookup succeeded, and it decoded the descriptor without ever asserting how many fields came back -- so a failed lookup or a short decode could only have been judged indirectly through the plan. T0a and T0b assert the fixture reached its condition first. license_tier: ORIGINAL No hw writes (Rule 26).