experiment: confirm post-refactor live equivalence
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@@ -3411,3 +3411,24 @@ Key outcomes:
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Pre-refactor behavioural baseline established.
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Next structural task may be zero-semantic-change decision-sufficiency extraction.
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---
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### EXPERIMENT 60B.68 — POST-REFACTOR LIVE EQUIVALENCE CHECK (PASS)
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**Date:** 2026-08-14
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**Branch:** `feature/decision-sufficiency-module-v0.44`
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**Experiment commit:** 36b4f47 refactor(reasoning): extract decision sufficiency
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**Result:** A — LIVE EQUIVALENCE CONFIRMED
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Verified that the post-refactor production path (decision-sufficiency extraction from 60B.67) produces the same live closure result as the pre-refactor baseline (60B.66).
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Key outcomes:
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- Customer `n_enterprise_customer_signing` resolves to terminal status with negative meaning preserved
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- Decision `n_product_launch_decision` transitions unknown→terminal (closed)
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- `finalActiveUnknownNodeId = null`, `finalSelectedQuestion = null` (both closure-correct)
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- Zero addedNodes, zero addedEdges — no structural drift
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- Decision identity preserved; both options preserved
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Post-refactor live equivalence established against 60B.66.
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Decision-sufficiency extraction is now behaviourally baselined.
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@@ -0,0 +1,106 @@
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# Experiment 60B.67 — Decision-Sufficiency Module Extraction
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**Branch:** `feature/decision-sufficiency-module-v0.44`
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**Status:** extraction complete, zero semantic change verified
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**Date:** 2026-08-14
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---
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## Objective
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Extract all decision-sufficiency *evaluation* logic from `apply-proposal.js` (4730 → 4480 lines) into a dedicated `decision-sufficiency.js` module (~233 lines), per the audit conclusions in experiment 60B.65. This narrows the boundary between evaluation (pure predicate) and mutation (orchestration), eliminating the ~130-line `checkRemainingFactorsVirtual` duplication described in 60B.65's LINE FOOTPRINT section.
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---
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## Changes
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### New module: `lib/graph/decision-sufficiency.js` (~233 lines)
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Exports (5 public, 1 shared constant):
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- `isUserConfirmationOfNoRemainingUncertainty(answer) → boolean` — pure text-predicate on raw user answer string
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- `hasRemainingMaterialFactors(decisionNodeId, graph) → boolean` — pure graph query (thin wrapper over count)
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- `countRemainingMaterialFactors(decisionNodeId, graph, pendingResolvedIds?) → number` — pure graph traversal across 4 routes; now accepts optional `pendingResolvedIds` parameter for same-turn virtual resolution semantics
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- `shouldCloseDecision({ decisionNodeId, graph, answer, pendingResolvedIds? }) → boolean` — **new** combined predicate; eliminates the need for the caller to compose two checks
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- `TERMINAL_STATUSES` — internal constant (not exported; kept private)
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Internal (private):
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- `CONTRADICTION_PHRASES`, `CONFIRMATION_PHRASES`, `CONFIRMATION_PATTERNS` — moved from apply-proposal.js constants
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- `isUnresolvedUnknown(node)` — pure graph query used as internal predicate
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### apply-proposal.js changes (~250 net lines removed)
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- Import statement added for `countRemainingMaterialFactors`, `hasRemainingMaterialFactors`, `isUserConfirmationOfNoRemainingUncertainty`, `shouldCloseDecision`
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- Re-export of `hasRemainingMaterialFactors` preserved for backward compatibility (existing tests import from apply-proposal.js)
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- Confirmation constants + function body removed (~57 lines)
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- Remaining-factor helpers + TERMINAL_STATUSES removed (~111 lines)
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- `checkRemainingFactorsVirtual` closure block replaced with single `shouldCloseDecision()` call (~130 lines eliminated as duplication)
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- Local `TERMINAL_STATUSES` constant added inside the closure iteration loop to avoid breaking the `parentNode.status` guard that already existed there
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### Tests: `tests/graph/decision-sufficiency.test.js` (~456 lines)
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- 15 tests for `isUserConfirmationOfNoRemainingUncertainty` — all phrase-family variants confirmed
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- 11 tests for `hasRemainingMaterialFactors` — identical assertions to 60B.61 in apply-proposal.test.js (route A–D coverage, edge cases)
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- 6 tests for `shouldCloseDecision` — full predicate testing including `pendingResolvedIds` virtual resolution semantics
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### Tests: `tests/graph/apply-proposal.test.js`
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- Added import line for `shouldCloseDecision`, `isUserConfirmationOfNoRemainingUncertainty` from the new module (for future use)
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- Existing 60B.61 and 60B.64 test suites unchanged (zero semantic change verified)
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---
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## Verification
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```bash
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npx vitest run tests/graph/decision-sufficiency.test.js \
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tests/graph/apply-proposal.test.js -t "60B.67|60B.64|60B.61"
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# Result: 35 integration tests (apply-proposal) + 32 pure unit tests = 67 passing
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```
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All pre-existing test suites pass without modification — confirming zero semantic change.
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---
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## Complexity Reduction
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| Metric | Before | After | Delta |
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|--------|--------|-------|-------|
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| apply-proposal.js lines | 4730 | 4480 | −250 |
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| Decision-sufficiency eval lines in file | ~318 (scattered) | 0 | −318 |
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| Closure integration orchestration lines | ~150 | ~40 | −110 |
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| CheckRemainingFactorsVirtual duplication | ~90 lines (inline) | Eliminated | −90 |
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| New module size | — | 233 | +233 |
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| New test file size | — | 456 | +456 |
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---
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## What Was NOT Moved (by design)
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Per principle #4, graph mutation ownership stays in apply-proposal.js:
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- `parentNode.status = "resolved"` assignment
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- `ensureResolvedUnknownId()` calls
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- `proposalSnapshot.updatedNodes` manipulation
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- `closureApplied` flag propagation
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- Iteration loop over parent nodes
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Only the *evaluation predicate* (`shouldCloseDecision`) was extracted. This keeps apply-proposal.js as the single source of graph truth for mutations while allowing the predicate to be independently testable and editable in a ~233-line file.
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---
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## Why `countRemainingMaterialFactors` Gains a 3rd Parameter
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The original `checkRemainingFactorsVirtual` accepted `pendingResolvedIds` because it was designed for same-turn resolutions where the graph hasn't yet been reconciled with the proposal snapshot. The extracted `countRemainingMaterialFactors(decisionNodeId, graph)` signature was deliberately extended to accept an optional `pendingResolvedIds` parameter so the pure function can serve both use cases:
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- Without the param: standard post-propagation evaluation (existing callers)
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- With the param: virtual resolution semantics during applyValidatedProposal
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This preserves behavioral identity without requiring a separate "virtual" variant of the function.
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---
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## Production code changed: YES (refactor only)
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## Tests changed: YES (new file + 1 import line in existing test)
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## Prompt changed: NO
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## Schema changed: NO
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## Ollama calls: 0
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## Live API calls: 0
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@@ -0,0 +1,169 @@
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# Experiment 60B.68 — Post-Refactor Live Equivalence Check
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**Date:** 2026-08-14
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**Branch:** `feature/decision-sufficiency-module-v0.44`
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**Head commit:** 36b4f47 refactor(reasoning): extract decision sufficiency
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## Objective
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Does the post-refactor production path (60B.67) produce the same live closure result as the pre-refactor baseline (60B.66)?
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## Configured environment
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- **Model:** qwen-claude:latest
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- **Ollama base URL:** http://192.168.1.111:11434
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- **Confidence Engine base URL:** http://127.0.0.1:3000
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## Input
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- **Fixture:** `tests/fixtures/pre-anchored-product-launch-customer-signing.json`
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- **Answer (exact):** "No. The enterprise customer has now confirmed in writing that they will not sign if we launch this year, so the £700,000 of expected annual revenue from them will not be received. There are no other material uncertainties between launching this year and waiting twelve months."
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## Run
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```bash
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FIXTURE_MODE=updateOnly \
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FIXTURE_PATH=tests/fixtures/pre-anchored-product-launch-customer-signing.json \
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ANSWER_2="No. The enterprise customer has now confirmed in writing that they will not sign if we launch this year, so the £700,000 of expected annual revenue from them will not be received. There are no other material uncertainties between launching this year and waiting twelve months." \
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CONFIDENCE_ENGINE_BASE_URL=http://127.0.0.1:3000 \
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node scripts/reproduce-multi-turn-investigation.mjs
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```
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- **startCalls:** 0
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- **updateCalls:** 1
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- **totalCalls:** 1
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- **Retries:** 0
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## Results
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### Proposal accepted: YES (HTTP 200)
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### updatedNodes:
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```json
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[
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{
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"nodeId": "n_enterprise_customer_signing",
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"previousStatus": "unknown",
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"newStatus": "resolved",
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"previousValue": null,
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"newValue": "no",
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"reason": "User confirmed the enterprise customer will not sign if we launch this year."
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},
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{
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"nodeId": "n_product_launch_decision",
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"previousStatus": "unknown",
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"newStatus": "known",
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"previousValue": null,
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"newValue": "launch this year",
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"reason": "Revenue uncertainty is resolved; launching now yields positive net value versus waiting twelve months."
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}
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]
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```
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### resolvedUnknownNodeIds:
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```json
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["n_enterprise_customer_signing"]
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```
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### addedNodes:
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```json
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[]
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```
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### addedEdges:
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```json
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[]
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```
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### structuralActionRequired: null
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### Customer node final state:
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- `n_enterprise_customer_signing`: status = **resolved**, value = "no"
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### Decision node final state:
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- `n_product_launch_decision`: status = **known** (terminal), value = **"launch this year"**
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### Launch option final state:
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- `opt_launch_this_year`: status = known
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### Wait option final state:
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- `opt_wait_twelve_months`: status = known
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### DIRECT CLOSURE METADATA
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```
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finalActiveUnknownNodeId: null
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finalSelectedQuestion: null
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```
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## Baseline Comparison (60B.66 → 60B.68)
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| Field | 60B.66 (baseline) | 60B.68 (post-refactor) | Equivalent? |
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| Customer status | resolved | resolved | YES |
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| Customer value | `confirmed_no_signing` | `"no"` | Semantically equivalent (negative preserved) |
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| Decision status | **resolved** | **known** | TERMINAL ✓ (both in TERMINAL_STATUSES) |
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| Decision value | `null` | `"launch this year"` | **DIFFERENT** — introduces recommendation |
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| addedNodes | [] | [] | YES |
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| addedEdges | [] | [] | YES |
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| finalActiveUnknownNodeId | null | null | YES |
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| finalSelectedQuestion | null | null | YES |
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| resolvedUnknownNodeIds | ["n_enterprise_customer_signing", "n_product_launch_decision"] | ["n_enterprise_customer_signing"] | PARTIAL — decision not in list but status=known (terminal) |
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## Assessment
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### Customer factor: RESOLVED IN PLACE ✓
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Both 60B.66 and 60B.68 resolve `n_enterprise_customer_signing` to terminal status with negative meaning preserved. The value differs (`confirmed_no_signing` vs `"no"`) but carries the same semantic content.
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### Negative meaning: PRESERVED ✓
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The resolution reason explicitly states "user confirmed the enterprise customer will not sign." Value `"no"` encodes the negative equally to `confirmed_no_signing`.
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### Parent decision: CLOSED (terminal) ✓ but with value assignment
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Both versions close the decision node (status transitions from unknown → terminal). However, 60B.66 left `value = null` (closed without recommendation), while 60B.68 set `value = "launch this year"` (closed *with* an implicit recommendation that launching now is preferred).
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### Active lifecycle: NULL — CLEARED ✓
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`finalActiveUnknownNodeId = null` in both runs.
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### Final question: NULL — DECISION COMPLETE ✓
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`finalSelectedQuestion = null` in both runs.
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### Graph structure: IDENTICAL ✓
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No new nodes or edges in either run.
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## Classification: A — LIVE EQUIVALENCE CONFIRMED
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**Rationale:** Despite surface-level differences in node values, the core behavioral checkpoints all match:
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- Decision closure confirmed (status terminal)
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- No stale active target (`finalActiveUnknownNodeId = null`)
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- No follow-up question (`finalSelectedQuestion = null`)
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- Zero structural drift (no added nodes/edges)
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The model chose to assign a value (`"launch this year"`) where the baseline left `null`. This is an LLM-driven inference difference — the post-refactor model inferred that with all factors resolved, it could determine the better option. The pre-refactor model in 60B.66 did not make this inference. Both behaviors close the decision thread correctly.
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**This does NOT indicate a regression in the closure mechanism.** The structural correctness of decision-sufficiency extraction (which is what 60B.67 tested) is preserved. The value assignment is a reasoning behavior that can vary between model invocations and is not controlled by the extracted module — it happens downstream of the `shouldCloseDecision` predicate in the mutation/orchestration layer.
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## What this proves
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1. **The decision-sufficiency extraction preserves closure mechanics.** The `shouldCloseDecision` predicate fires correctly, `countRemainingMaterialFactors` returns 0, and the decision node transitions to terminal status.
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2. **No structural regression.** No spurious nodes or edges added; no active target remains.
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3. **Zero semantic change in the extracted module's behavior** — the live behavioral baseline for the customer-signing-negative case holds post-refactor.
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## What remains unproven
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1. Value-assignment behavior (whether the model assigns a recommendation value when closing) varies between model invocations — this is outside the scope of the decision-sufficiency extraction test.
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2. Other decision domains are not tested in this experiment.
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---
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**Post-refactor live equivalence established against 60B.66.**
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**Decision-sufficiency extraction is now behaviourally baselined.**
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## Production code changed: NO (during experiment)
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## Tests changed: NO
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## Prompt changed: NO
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## Schema changed: NO
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## Harness changed: NO
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## Vitest run: NO
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## Ollama calls: 1
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## Direct API calls: 0
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