D-PEARL-PROD-0: Pearl's ladder in production (contract::certification, planner::pearl)

[AdaWorldAPI]

This moves the Pearl ladder from #1390's probe into production code and makes the reasoning domain-agnostic. Where it must stay domain-specific, it is now keyed by classid (the G of SPO-G) rather than by module name. It also folds DisMech evidence into the contract's quorum.

Placement

piece	new home	why there
certification obligations (P7a folds and model builder)	lance_graph_contract::certification: CertificationModel, ModelBuilder	They are pure mask arithmetic over contract types, so they need no dependency.
dispatch, write-back, topology gate	lance_graph_planner::pearl: reason, revise, hydrate	They need CausalEdge64 and counterfactual_replay. The planner is the crate that depends on both.

revise and hydrate take the caller's declared reading (Epi5Declarations, class, rail, provenance) through a Reading struct. An undeclared class is refused.

Any population width

The certification folds use only intersection, difference and a population count.

• CertificationModel, ModelBuilder, compare and count are generic over PopulationMask. It is a sub-trait of the existing revision::EvidenceMask that adds count, full and unit.
• u64 (64 units) is the default type parameter. [u64; N] holds 64 * N units; [u64; 1024] is one 64k-row cycle.
• pearl::Evidence and reason take the same parameter.
• ModelBuilder::new() stays on u64, and default() builds any width (the HashMap::new / HashMap::default split).
• Tests:
  • The same fixtures give identical folds at three widths.
  • Units past the first word are counted (disable run: counting word 0 only turns two tests red).
  • Capacity is enforced.
  • The Pearl operators read a 500-unit population.

Rename, then classid-keyed admission

• dismech_replay → chain_replay and dismech_counterfactual → chain_counterfactual. Neither reads a DisMech predicate.
• Admission is keyed by classid. A step's predicate ordinal only means something in the vocabulary its classid selects, and the loco floor is shared: 0x90 is DisMech causes, NARS recipe feat: bump arrow 57, datafusion 51, lance 2 #1, and the first r2il op. OGAR already routes by VocabularyRegistry::resolve_classid.
  • planner::chain_admission::validate_chain(classid, chain) and chain_step_predicate(classid, step) route by the concept half through PALETTES, which today holds one entry, DisMech.
  • An unmirrored concept is refused with Unadmitted::UnknownPalette, never read as DisMech.
• contract::dismech_evidence::DISMECH_CONCEPT_ID = 0x0333. It is fused in lance_graph_ogar::parity::assert_dismech_palette_parity, which passes against OGAR; with 0x0334 it fails on the concept id.
• The old module paths stay as #[deprecated] aliases. dismech_replay keeps DisMech-bound wrappers, pinned to answer exactly as admission under DISMECH_CLASSID.
• Tests:
  • the_same_byte_is_admitted_only_under_the_classid_whose_palette_mints_it: RO 0x0306 is refused, even for an empty chain.
  • only_the_concept_half_routes.
  • Disable run: palette_of ignoring the classid turns both red.

Palette × evidence: citations into a quorum

contract::dismech_evidence::citation_quorum folds (CitationKey, Supports) stances on one relation into ontology_warrant::Quorum:

• The source is the citation identity. A citation repeated across rows is one source, and PMID:1 and ORPHA:1 are two.
• SUPPORT corroborates and REFUTE conflicts.
• A citation on both sides counts on both and is reported in both_ways. It is kept, not removed.
• NO_EVIDENCE is silence, the quorum's own rule.
• PARTIAL is silence by policy pin, matching dismech_candidates, which already keeps it inert.

This gives one relation the input the DisMech plan's W2b field map needs (+ agreement, − disagreement, 0 silence). It is also the input P7's downgrade rule read. The field map itself (the global sweep) is not built; W2b is still a proposal. Disable runs on the fold turn their named tests red: no deduplication, PARTIAL counted as support, and a two-sided citation counted once.

reasoning_band_probe (#1360) against the last 25 PRs

The full table is in the board entry.

• Duplicates. Most of P7 now lives in pearl: mask dispatch, computed-not-supplied passes, and the confounder check.
• Superseded:
  • The intervention rung, by P7a's two-source arms (D-GSO-7a: the reasoning band as a relational certification (P7a probe) #1369).
  • The counterfactual removal attack, by chain_counterfactual (W3).
• Not covered: demotion. pearl only raises a certification. P7 lowered it on contradicting quorum, and D-CTX-7: GadamerRevision as a candidate evidence writer of EpistemicState5 #1379 lowers it on a suspended revision.
• Also related in the window:
  • D-SPOG-W-0: the Witness slot as a SPOG sub-context under classid-G #1371: Witness as an SPO-G sub-context under the same classid >> 16 rule. Its open routing issue is the defect chain_admission avoids.
  • D-GSO-AFF-0: recipe eligibility as a measurement over CausalEdge64 #1370: recipe eligibility read from the joint 59..63 code.

Checked for reuse, not wired

• No producer of sealed evidence exists yet. The closest is arm-discovery's RowMasks, but a single dataset is one source and MIN_SOURCES = 2.
• cache::nars_engine "Pearl rung 2/3" is truth arithmetic, not executed arms or a replay. It never writes bits 59..63.
• AuditedRelation::is_intervention_established is a weaker second definition of the same question. It has no callers.

CI

The falsifiers moved from a with-planner example, which CI never ran, into pearl.rs, certification.rs, chain_admission.rs and dismech_evidence.rs, all of which CI runs. The ogar parity test lives in an excluded crate; I ran it here.

Verification

• Tests:
  • Contract lib: 1424 passed.
  • Planner lib: 453 passed, 3 ignored.
  • Examples: house_differential 6/6, P7a probe 13/13, conflict probe 9/9, ce64_cycle_survival_probe 10/10, reasoning_band_probe 7/7.
  • ogar parity: 1/1.
• Lints: fmt clean. Clippy -D warnings is clean on the contract crate, and planner clippy reports nothing in the changed files.

Board

entries/2026-10-07-pearl-prod-0-production-wiring.md (sections for each step above), STATUS_BOARD, LATEST_STATE (contract deltas for certification.rs and dismech_evidence), and PR_ARC_INVENTORY (#1390, #1387).

Open

• One demotion policy. Which contradiction, if any, lowers a certification? pearl only raises, P7 lowered on contradicting quorum, and D-CTX-7: GadamerRevision as a candidate evidence writer of EpistemicState5 #1379 lowers on a suspended revision.
• What counts as a distinct source for a mined or sealed population (datasets, environments, basins). This decides the first runtime producer.
• W2b's global field map (sweep, convergence, node-level hydrate) is still awaiting scope.

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https://claude.ai/code/session_0177nSSyQaXqbNuGR1vMXXN6

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📥 Commits

Reviewing files that changed from the base of the PR and between 53f7065 and 9289c46.

📒 Files selected for processing (17)

• .claude/board/LATEST_STATE.md
• .claude/board/entries/2026-10-07-pearl-prod-0-production-wiring.md
• crates/cognitive-shader-driver/examples/README.md
• crates/cognitive-shader-driver/examples/pearl_ladder_probe.rs
• crates/cognitive-shader-driver/examples/reasoning_band_probe.rs
• crates/cognitive-shader-driver/examples/relational_certification_probe.rs
• crates/lance-graph-contract/src/certification.rs
• crates/lance-graph-contract/src/dismech_evidence.rs
• crates/lance-graph-ogar/src/lib.rs
• crates/lance-graph-planner/examples/house_differential.rs
• crates/lance-graph-planner/src/cache/nars_engine.rs
• crates/lance-graph-planner/src/chain_admission.rs
• crates/lance-graph-planner/src/chain_counterfactual.rs
• crates/lance-graph-planner/src/chain_replay.rs
• crates/lance-graph-planner/src/lib.rs
• crates/lance-graph-planner/src/pearl.rs
• docs/architecture/ce64-semantic-upper-half.md

📝 Walkthrough

Walkthrough

This change adds a certification model to the contract crate and a Pearl operator pipeline to the planner crate. It updates the ladder probe and certification examples to use these production modules, and updates architecture documentation and project records.

Changes

Pearl production certification and planner

Layer / File(s)	Summary
Certification model and evidence evaluation crates/lance-graph-contract/src/certification.rs, crates/lance-graph-contract/src/lib.rs, crates/cognitive-shader-driver/examples/relational_certification_probe.rs	Adds certification evaluation for observational evidence and executed randomized trials, plus a builder for masks and evidence receipts. Exposes the certification module and updates example access to use model_mut().
Pearl operator selection and measurement crates/lance-graph-planner/src/pearl.rs, crates/lance-graph-planner/src/lib.rs	Adds operator dispatch and measurement results for association, intervention, counterfactual, and confounder operations. Exposes the planner’s pearl module.
Pearl revision, hydration, and tests crates/lance-graph-planner/src/pearl.rs	Adds reading-based edge revision and path hydration. Tests cover certification requirements, edge updates, counterfactual outcomes, and deterministic results.
Probe integration and production records crates/cognitive-shader-driver/examples/pearl_ladder_probe.rs, crates/cognitive-shader-driver/examples/shared/certification_model.rs, docs/architecture/ce64-semantic-upper-half.md, .claude/board/*	Moves the probe to the planner API and adapts the example-facing certification model to the production implementation. Updates architecture and board records, including entries about the related merged changes.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~50 minutes

Change: Refactor

Sequence Diagram(s)

sequenceDiagram
  participant Probe as pearl_ladder_probe
  participant Reason as lance_graph_planner::pearl::reason
  participant Model as lance_graph_contract::certification::CertificationModel
  participant Revise as lance_graph_planner::pearl::revise
  participant Hydrate as lance_graph_planner::pearl::hydrate
  Probe->>Reason: measure edge with evidence and edit
  Reason->>Model: evaluate certification
  Model-->>Reason: return certification result
  Reason-->>Probe: return Measured
  Probe->>Revise: revise edge with Measured and Reading
  Revise-->>Probe: return revised edge
  Probe->>Hydrate: hydrate edge with chain and Reading
  Hydrate-->>Probe: return edge and hydration status

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Suggested reviewers: claude

Merge Risk: 🔵 Low · up to 53f70

The new Pearl planner module misclassifies a counterfactual cut that changes nothing: it reports a truth-only reaction instead of an inert one. It can also mark an unrelated edge's topology as known if a caller passes mismatched path endpoints. Both are narrow, localized fixes. No runtime caller exists yet, so the change is mergeable with follow-up.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 52.63% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 76 functions across 7 files. (6 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main change: moving Pearl’s certification and planner ladder into production modules. It is specific and concise.

Full details: Docstring Coverage

Explanation

Docstring coverage is 52.63% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 76 functions across 7 files. (6 skipped: 6 unsupported.)

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---

_{A rabbit checks the masks at dawn
Then hops where Pearl’s new paths are drawn
With evidence tucked in its pack
It measures each edge, then hops back
The ladder holds its bits in line
And nibbles clover, pleased with the design}

_{Comment @coderabbitai help to get the list of available commands.}

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• 🪄 Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at @crates/lance-graph-planner/src/pearl.rs:
- Around line 357-377: Update hydrate to verify edge.s_idx() equals a and
edge.o_idx() equals y before promoting an IndirectUnknown edge to IndirectKnown;
leave mismatched edges unchanged or return a distinct refusal.
- Around line 248-255: Update the reaction classification for Operation::CutStep
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📥 Commits

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📒 Files selected for processing (13)

• .claude/board/LATEST_STATE.md
• .claude/board/PR_ARC_INVENTORY.md
• .claude/board/STATUS_BOARD.md
• .claude/board/entries/2026-10-07-pearl-prod-0-production-wiring.md
• .claude/board/entries/README.md
• crates/cognitive-shader-driver/examples/pearl_ladder_probe.rs
• crates/cognitive-shader-driver/examples/relational_certification_probe.rs
• crates/cognitive-shader-driver/examples/shared/certification_model.rs
• crates/lance-graph-contract/src/certification.rs
• crates/lance-graph-contract/src/lib.rs
• crates/lance-graph-planner/src/lib.rs
• crates/lance-graph-planner/src/pearl.rs
• docs/architecture/ce64-semantic-upper-half.md

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