All four findings verified against the tree before fixing; all four hold.
The schema-minor MUST (binary_format.tex:2330) has never been implemented.
SchemaVersion::for_major accepts no minor and returns {major, 0}, and both
staging paths derive only the major, so kinds 24-27, 28-29, 30, and 31 already
carry no additive-version record -- and the requirement's own rationale is
exactly what the gap defeats: a reader meeting an appended discriminant cannot
tell a stale vocabulary from damaged bytes. Filed as P13-S14 and ruled a
separate rung after G2a, sweeping 24-33 in one retroactive pass rather than
blocking G2a on a debt eight kinds deep or paying for two partial sweeps. G2a
now says explicitly that it extends the violation by two, knowingly, and
forbids working around the absence.
s7 could not fail. WorkingSnapshot::restore reassigns the whole graph
independently of every write chain, so omitting a chain leaves stale history
while the field still rolls back -- the prescribed assertion passed under its
own mutation. Two framings of this test were wrong; the third asserts against
a later undo's predecessor, and the contract now requires the mutation be run
rather than reasoned about. s8's mutation was impossible as written: each
payload has one field, so there are no adjacent fields to swap. Swapping
discriminants 32/33 in both halves is the self-consistent mutation that leaves
round-trips green and kills correctly-named literal vectors.
The normative repair surface doubles: eleven sites across four documents, five
of them G1 debt. Core's normative OperationKind and OperationKindTag listings
are missing CreateInstrument as well as both new kinds; the catalog's
value-restoration family list is normative for undo and omitting a family is a
silent semantic gap; two spelled-out payload counts move. Since two independent
reviews each found sites the other missed, the list is a floor and the contract
now prescribes grepping the load-bearing phrases.
Also: core_spec said "two edits" and prescribed more, and the split-cost
accounting counted only Text Projection when G2b repeats the Binary Format and
Operation Catalog work too.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QjsEnYhm1gPpf6ii2iFxFV
Levi Neuwirth
c39e58a755