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claude 8688a60ded docs(ledger): split the design ledger into an INDEX map, per-contract live files, and history sidecars

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  preserve every superseded block verbatim, stamps and issue refs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 Nothing was deleted: superseded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  place at cycle close, superseded text moves verbatim to the sidecar,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.

2026-07-21 16:40:36 +02:00

940 B

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C4 — Cycle granularity: history

FROZEN HISTORICAL RECORD. Each block below was true as of its cycle/date stamp and may be superseded; this file is NOT current truth and NOT a grounding surface. Current contract: c04-cycle-granularity.md.

Realization (#275, 2026-07-15). Ingestion sources are supplied to run by role name, not by list position. SourceSpec carries a role: Option<String> (the bound Role's name, load-bearing for source binding), and Harness::run_bound resolves a keyed supply against those roles, emitting sources in SourceSpec declaration order. The C4 tie-break stays "source declaration order" — now independent of how the caller orders the supply — and a mis-bound feed is a named SourceBindError at start time rather than a silently wrong run. The raw-index run(Vec) primitive (positional, C23) is unchanged; every hand-built graph keeps role: None.

940 B Raw Blame History

C4 — Cycle granularity: history

940 B

Raw Blame History