docs: record audience question routing fix

docs/current-handoff.md

@@ -152,6 +152,18 @@ Experiment 54N tested whether an interpretation disagreement can be judged for m
   - `npx vitest run tests/graph/apply-proposal.test.js tests/graph/reasoning-context-compatibility.test.js` → PASS (96/96)
 - **Still unproven live:** the exact 60B.12 client-retention continuation case under live model output.
 
+### 60B.23 audience-question routing specificity
+
+- 60B.22 identified that `decision_audience` routing was too broad: any occurrence of `customer|user|buyer|stakeholder|recipient|audience` inside a decision unknown could hijack a proposition-specific question before proposition extraction ran.
+- `decision_audience` is now gated by explicit audience-identity phrasing only; raw noun occurrence is no longer sufficient.
+- `extractMeaning()` now prefers explicit `whether ...` propositions from descriptions when the label is a nominal status/risk/likelihood phrase, so proposition-specific decision unknowns preserve their actual unresolved proposition.
+- Decision-pattern `whether ...` propositions now remain on `decision_evidence_clarification` instead of being pre-empted by `decision_threshold_outcome`.
+- Legitimate audience-discovery cases remain preserved, and 60B.20-style direct interrogatives remain unchanged.
+- Focused verification passed:
+  - `npx vitest run tests/graph/question-formulator.test.js` → PASS (25/25)
+  - `npx vitest run tests/graph/question-formulator.test.js tests/graph/question-formulation-v0.24.test.js` → PASS (45/45)
+- **Still unproven live:** the exact 60B.21 product-launch regression in the full end-to-end path.
+
 ### When This Knowledge-Management Phase Is Complete
 
 Provisional criteria for review (all confirmed met by Experiment 38 cold-start test):

docs/experiment-60b23.md

@@ -0,0 +1,188 @@
+# Experiment 60B.23 — Narrow decision-audience routing to genuine audience-identity uncertainty
+
+**Branch:** `feature/question-family-specificity-v0.29`  
+**Date:** 2026-08-13  
+**Status:** COMPLETE  
+**Type:** BOUNDED IMPLEMENTATION
+
+## Objective
+
+Implement the smallest deterministic narrowing so proposition-specific decision unknowns containing audience nouns do not get hijacked by the generic `decision_audience` route.
+
+The target regression from 60B.21 / 60B.22 was:
+
+```text
+label:
+Prospective enterprise customer signing status
+
+description:
+Uncertainty about whether the prospective enterprise customer will sign if we launch this year, so that its resolution is needed to decide which timing option provides superior net value.
+```
+
+This should not be treated as audience discovery merely because `customer` appears in the text.
+
+## 60B.22 diagnosis carried forward
+
+60B.22 established two linked causes:
+
+1. `selectQuestionFamily()` routed any decision-pattern node containing `customer|user|buyer|stakeholder|recipient|audience` into `decision_audience` via first-match early return.
+2. `extractMeaning()` also genericised any such noun occurrence into `the relevant customer, user, or value recipient`, bypassing the underlying unresolved proposition.
+
+The implementation boundary for 60B.23 was therefore:
+
+> audience-family routing depends on the semantic role of the audience term, not mere lexical presence.
+
+## Exact semantic narrowing implemented
+
+### 1. Audience-family routing now requires explicit audience-identity phrasing
+
+Added a shared deterministic helper in `lib/graph/question-formulator.js`:
+
+- `hasAudienceIdentityQuestion(text)`
+
+This fires only for explicit audience-identity forms such as:
+
+- `Who is the target customer?`
+- `Which buyers are we building this for?`
+- `Who would receive the value?`
+- `Which audience should this serve?`
+- `Who experiences this problem?`
+
+It does **not** fire merely because a customer/user/buyer/stakeholder/recipient noun appears as the subject of another proposition.
+
+### 2. Proposition-preserving extraction now prefers explicit `whether...` descriptions for status-like labels
+
+When the label is a nominal status phrase (`status`, `likelihood`, `probability`, `chance`, `risk`, `uncertainty`) and the description begins with:
+
+```text
+Uncertainty about whether ...
+```
+
+`extractMeaning()` now returns the explicit `whether ...` proposition directly instead of the nominal label phrase.
+
+This preserves proposition-specific meaning for cases like:
+
+- customer will sign
+- customer will renew
+- users will adopt the change
+- stakeholder will approve the plan
+
+without hardcoding any product-launch wording.
+
+### 3. Decision threshold routing no longer preempts proposition-specific `whether ...` decision unknowns
+
+Within decision-pattern family selection, if extracted meaning is already a `whether ...` proposition, the node stays on `decision_evidence_clarification` rather than being diverted into `decision_threshold_outcome`.
+
+### 4. Legitimate audience questions remain valid through post-build validation
+
+The formulated audience question still resolves to the `decision_audience` family and survives existing question validation. No prompt, schema, provider, or targeting logic changed.
+
+## Behaviour preserved
+
+### Legitimate audience-discovery cases preserved
+
+True audience-identity questions still route to `decision_audience`.
+
+### 60B.20 direct interrogative behaviour preserved
+
+Existing direct proposition-style interrogatives such as:
+
+```text
+Will our largest client leave if we relocate?
+```
+
+remain unchanged and still produce direct proposition-specific wording.
+
+## Focused test results
+
+### Dedicated question-formulator suite
+
+```bash
+npx vitest run tests/graph/question-formulator.test.js
+```
+
+Result: **PASS (25/25)**
+
+Covered:
+
+- 60B.21 signing-status regression
+- legitimate audience identity preservation
+- customer-as-subject non-audience case
+- user-as-subject non-audience case
+- buyer/stakeholder lexical mention non-audience case
+- existing direct interrogative preservation
+
+### Smallest broader regression suite containing decision-family tests
+
+```bash
+npx vitest run tests/graph/question-formulator.test.js tests/graph/question-formulation-v0.24.test.js
+```
+
+Result: **PASS (45/45)**
+
+## What is now guaranteed
+
+1. Raw audience/customer/user/etc. noun occurrence is no longer sufficient to trigger `decision_audience`.
+2. `decision_audience` now requires that audience identity itself be unresolved.
+3. Proposition-specific decision unknowns with audience nouns can preserve their unresolved proposition into the final question.
+4. Existing audience-discovery questions still route to the audience family.
+5. Existing interrogative direct-question behaviour remains unchanged.
+6. No schema, prompt, apply-proposal, question-target selection, materiality, compatibility, provider, or harness logic changed.
+
+## What remains unproven until live rerun
+
+Still unproven until the exact 60B.21 live product-launch regression is rerun:
+
+- whether the live model-selected node + final deterministic wording path now yields the expected proposition-specific question in the full end-to-end launch-timing case.
+
+## Production code changed
+
+YES — `lib/graph/question-formulator.js`
+
+## Tests changed
+
+YES — `tests/graph/question-formulator.test.js`
+
+## Prompt changed
+
+NO
+
+## Schema changed
+
+NO
+
+## Apply-proposal changed
+
+NO
+
+## Question-target selection changed
+
+NO
+
+## Materiality changed
+
+NO
+
+## Reasoning-context compatibility changed
+
+NO
+
+## Provider changed
+
+NO
+
+## Harness changed
+
+NO
+
+## Ollama calls
+
+0
+
+## Live API calls
+
+0
+
+## Full suite run
+
+NO