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D-GSO-7a: the reasoning band as a relational certification (P7a probe) - #1369
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📝 WalkthroughWalkthroughThis change adds a relational-certification probe. It interprets reasoning-band bits as six class-scoped contracts, evaluates observational and intervention evidence, and tests the resulting certifications. It also wires the example into Cargo tests and adds documentation and board records. ChangesRelational certification
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~30 minutes Change: Other Sequence Diagram(s)sequenceDiagram
participant FixtureBuilder
participant ContractEvaluators
participant BandStamping
participant ProbeOutput
FixtureBuilder->>ContractEvaluators: Provide sealed observational or trial model
ContractEvaluators->>BandStamping: Return strongest satisfied contract
BandStamping->>ProbeOutput: Provide stamped reasoning-band bits
Suggested reviewers: Merge Risk: 🔵 Low · up to This change adds a probe example and its documentation, so production behavior is unaffected. One markdown formatting warning remains and is easy to fix before or after merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 57.78% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 45 functions across 1 files. (5 skipped: 5 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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@.claude/board/entries/2026-10-06-reasoning-band-as-relational-certification.md:
- Line 7: Wrap the `#1360` reference in the sentence about its probe and board
row in inline code to avoid triggering MD018; leave the surrounding text
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.claude/board/STATUS_BOARD.md.claude/board/entries/2026-10-06-reasoning-band-as-relational-certification.md.claude/board/entries/README.mdcrates/cognitive-shader-driver/Cargo.tomlcrates/cognitive-shader-driver/examples/README.mdcrates/cognitive-shader-driver/examples/relational_certification_probe.rs
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Supersedes the meaning of D-GSO-7's rungs; #1360's probe is unchanged. Under a reading declared per class, bits 61..63 hold the strongest relational statement the sealed model may assert: 0 Open, 1 Associated, 2 Related, 3 Contributes, 4 CausalCandidate, 5 Causes; 6 and 7 refuse. ReasoningBand is used only as the 3-bit carrier, and a class declared under the historical reading refuses the same bits. Contracts are integer folds over unit masks and causal_audit's SupportLedger: association needs two distinct sources, the robustness mask can only refute, Contributes is a stable effect in every declared stratum, Causes needs two distinct InterventionBacked sources plus executed randomized arms. entails is an explicit table, equal to code >= on 0..=5 only; historical Meta/Transcendent do not satisfy Causes. An exhaustive 2,500-model family shows the chain is monotone with association scoped to the declared populations (0 violations) and not with marginal association (10, Simpson). Sibling specificity and removal under overdetermination are shown not to be rungs; confounded observational data does not demote an intervention-certified relation. 12 tests, 11 disable runs red. Names and thresholds are policy pins. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T8w7Ucm7NhitfTduFKmhYx
Codex review: distinct_sources counted every receipt in the ledger, so receipts recorded after a model's seal could raise that sealed model to Associated or Causes, making replay depend on the ledger's current state. Receipts are now filtered to `at <= seal`. New test receipts_after_the_seal_do_not_count: sources recorded at a later version leave the earlier seal Open and the same ledger read at the later seal gives Causes. Dropping the filter turns it red. 13 tests, 12 disable runs red. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T8w7Ucm7NhitfTduFKmhYx
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CodeRabbit / markdownlint: a line starting with '#1360' reads as an ATX heading without a space. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T8w7Ucm7NhitfTduFKmhYx
CausalEdge64 x RecipeLaw[0..63] -> EligibleRecipes: u64, as two const-table lookups and one AND. No scheduler, task, capability object, recipe list or allocation; the u64 is transient and never written back. Bits 59..63 are read as one EpistemicState5 code through the shipped accessors (spare() << 2 | truth_raw()): ten declared codes, ordered without regard to strength; undeclared codes refuse. Bits 40..42 keep their Pearl reading. Seven recipes declare requires/forbids facts and Pearl planes; the rules compile at build time into [u64; 32] and [u64; 8]. Falsifiers: same bits + same law generation give the same population and the generation matters (F1/F8); a relevant factor flips its bit (F2); S/P/O, F/C, bits 43..45, mantissa, plasticity and witness are swept over their full ranges with no change (F3); the tables match an independent re-derivation that names every refusal (F4/F5); preference only clears bits (F6/F7); zero allocations (F9). A half-field write to bits 59..60 turns code 17 into an undeclared 18, which refuses. 8 tests, 7 disable runs red. Board: D-GSO-AFF-0 row and inventory entry; D-GSO-7a marked Shipped (#1369). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T8w7Ucm7NhitfTduFKmhYx
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Probe only. This PR changes what the band rungs mean. It does not change the D-GSO-7 probe from #1360 or any library code. Nothing is persisted, and no CE64 bits move.
What it claims
Bits 61..63 hold the strongest relational statement the sealed model may assert. The reading is declared per class:
causal_audit::SupportLedger)InterventionBackedsources and the executed randomized arms show the effectReasoningBandis used only as the 3-bit carrier; its historical names carry no meaning here.Inventory (before the change)
with_reasoning_bandis called only in tests and examples.BandPresence::Present, so every production read refuses.dismech_counterfactual::EdgeRolecopies the band without interpreting it.cap()inreasoning_band_probe.rs. It treats Perspective, Meta and Transcendent as stronger than Counterfactual.Measured
entailsis an explicit table. It equalscode >=on codes 0..=5 only. The historical Meta (6) and Transcendent (7) codes do not satisfy Causes.Tests
-D warningsand fmt are clean.Open
band_readinglens (a contract change), and the final names.2026-10-06-reasoning-band-as-relational-certification.md.🤖 Generated with Claude Code
https://claude.ai/code/session_01T8w7Ucm7NhitfTduFKmhYx
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Summary by CodeRabbit
New Features
Documentation