claude
8688a60ded
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.history.md (18 sidecars) and INDEX.history.md preserve every superseded block verbatim, stamps and issue refs intact, under a frozen-record banner. Nothing was deleted: superseded design intent remains an addressable working-tree artifact, off the per-cycle audit walk. - Ledger discipline is now stated in INDEX.md: live files are edited in place at cycle close, superseded text moves verbatim to the sidecar, and a supersession marker in a live file is itself an audit finding.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.
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C20 — Strategy ↔ harness; the harness is the root sim graph: 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 Each block below was true as of its cycle/date stamp and may be superseded; this file is NOT current truth and NOT a grounding surface.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: c20-strategy-harness.md.
Realization (GER40 session-breakout blueprint milestone, 2026-06-17 — refs
#94/#96/#97, spec 0051). Made concrete on the first real-data strategy: a
hand-wired FlatGraph is not a shippable strategy — it carries no
param_space(), so the World families (sweep / walk_forward / compare, C21)
cannot consume it without a hand re-author (the friction the GER40 deep-dive
fieldtest surfaced). The canonical shippable form is the Composite
blueprint (the authoring/source level, C9/C19); the FlatGraph is only its
compiled substrate (C23). The breakout now ships as
ger40_breakout_blueprint(bar_period, …) whose param_space() is exactly its
tuning knobs ({entry_bar.target, exit_bar.target}); the bar period is a
construction argument binding Resample + Session together — a structural
matrix axis (C12: a different period is a different strategy, not a sweep
point), never a param_space entry, so a sweep cannot desync the two clocks.
This is the concrete instance of the structural-axis-vs-tuning-param split
above (and delay.lag, a C8 structural constant, is bound out of the space).
Refinement (2026-06-29 — experiment-matrix members are topology-data, C24).
"The experiment matrix is ordinary Rust control flow, not a config schema" holds for
the generator — the loop / conditional that enumerates structural variants may
stay Rust (C17). But each member it yields is a topology-data value (C24),
not a hand-coded blueprint nor engine-baked source: a structural axis selects among
data blueprints the World constructs, mutates, and serializes. This is what makes
structural variation first-class and searchable rather than a hand-enumerated
menu — HarnessKind and the per-strategy *_sweep_family functions in aura-cli
are the pre-C24 scaffolding (topology-as-engine-source, a C16 tension), retired as
C24 + the project-as-crate layer land. [C26 realization, 2026-07-10 (#231): the
scaffolding's last data weld — wrap_r's hard-wired price←close role and the
M1Field::Close-only open sites — is retired; a strategy's input roles now bind
archive columns by name (C26). wrap_r's remaining R-scaffolding retirement
stays #159.]