The single-file ledger had grown to 2968 lines / ~42k tokens, mixing
current design law with accreted history: 59 cycle-stamped realization
blocks, 18 [HISTORY] passages, 22 supersession markers, and the C10 /
C22 / C24 reframe sagas layered several supersessions deep. A
code-grounding audit (31 agents, adversarially verified) confirmed 11
defects stated as current truth: stale crate homes from the C28 #288
roster split (cost nodes, PositionManagement, PositionEvent, Session),
the renamed InputSpec->PortSpec, the pre-#241 project model in C16 and
the open-threads section, a stale HarnessKind retirement deferral in
C24, and three C28-internal inconsistencies.
New shape, per the ailang precedent:
- INDEX.md stays the sole addressable entry point: foundation, external
components, a C-id-keyed contract map (one line per contract), and
only the genuinely open architectural threads.
- contracts/cNN-<slug>.md carries each contract's current truth only:
Guarantee / Forbids / Why with ratified refinements integrated, plus
a code-anchored Current state. All confirmed defects are fixed here;
crate anchors were re-verified against the tree.
- contracts/cNN-<slug>.history.md (18 sidecars) and INDEX.history.md
preserve every superseded block verbatim, stamps and issue refs
intact, under a frozen-record banner. Nothing was deleted: superseded
design intent remains an addressable working-tree artifact, off the
per-cycle audit walk.
- Ledger discipline is now stated in INDEX.md: live files are edited in
place at cycle close, superseded text moves verbatim to the sidecar,
and a supersession marker in a live file is itself an audit finding.
Every contract file was verified against its old text by an independent
zero-loss pass (statement-by-statement) plus a code-accuracy spot check;
C-ids and contract titles are unchanged, so existing C-id citations in
code, tests, and issues resolve as before.
