nx_record_gate.nx

nx_record_gate.nx -- referee for NXR1 (nx_record.nx), the typed self-describing record encoding. EVERY TOOTH HERE IS CHOSEN TO BE A THING A TSV ROW CANNOT DO. That is the point: this gate does not merely show the codec round-trips, it shows the codec is STRUCTURALLY IMMUNE to the four failure modes that make positional tab-delimited text unfit for the information plane (debt seq1326). T3 = a TAB and a NEWLINE inside a value survive (TSV: corrupts the row / splits the record) T4 = an absent field does NOT shift its neighbours (TSV: every later column reads as the wrong one) T5 = an UNKNOWN field id is stepped over, not fatal (TSV: a new column breaks every old reader) T8 = a type mismatch yields the default, not raw bytes (TSV: everything is text, so nothing is checked) T7 is the NON-VACUITY tooth: it proves field 20 IS findable in the full record, so T4's "absent" is a real absence and not this gate failing to find anything at all. license_tier: ORIGINAL expect_exit: 0