experiment: confirm clean closure with direct metadata

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Experiment 60B.41 was a read-only diagnosis of whether `selectActiveUnknownCandidate` must independently exclude terminal-status nodes (known/resolved/contradicted) for the 60B.37 closure path to be correct and fallback selection to remain semantically sound. **Classification: A — SELECTOR ITSELF MUST FILTER TERMINAL STATUS.** The selector at utils.js:593 filters only `kind === "unknown"` and `!resolvedNodeIds.includes(n.id)`. Zero status filtering exists. Key findings: (1) Scoring (`scoreUnknownCandidate`) is completely blind to node.status — it uses text classification, downstream count, and upstream unresolved dependency count, none of which inspect status. A known-status unknown-kind node scores identically to an unknown-status one. (2) In 60B.37's exact scenario: if no other genuine unresolved unknown remains, the selector would return the known decision node as the sole candidate, recreating the stale-target bug post-guard. (3) Adding terminal-status filtering does NOT affect genuine fallback candidates or prerequisite-first ordering because filtering happens before scoring and all genuine unknown-status nodes pass unchanged. (4) Five independent locations share the same gap pattern (`["resolved", "contradicted"]` exclusion without "known"): isSelectableUnresolvedUnknown, listUnresolvedUnknownCandidates, carriedActiveUnknownStillUnresolved, remainingUnknownExists inline check, and selectPatternCompatibleUnknownCandidate. This is PARTIAL overlap — different contracts serving different operational contexts but sharing the same systematic gap. **Critical distinction: D — SHARED ELIGIBILITY CONTRACT IS REQUIRED.** **Minimum implementation model: A — add terminal-status filter to selectActiveUnknownCandidate.** The selector must independently guard because it has zero caller-enforced input protection and known-status nodes bypass resolvedNodeIds entirely (they transition via updatedNodes.newStatus). Implementation boundary: one line change at utils.js:596 — add `!["known", "resolved", "contradicted"].includes(n.status)` to the existing filter. Ready for bounded implementation. No production code changed. 0 Ollama calls. Pure code inspection. Full trace in docs/experiment-60b41.md.
Experiment 60B.44 was a live regression of 60B.43's terminal post-mutation eligibility fix on the customer-signing closure case through the full production update path. **Classification: A — LIVE CLEAN CLOSURE CONFIRMED.** One bounded update call resolved `n_enterprise_customer_signing` in place (unknown → resolved) and closed `n_product_launch_decision` (unknown → resolved). Both option identities preserved. No new nodes or edges created. `activeUnknownNodeId = null` (cleared). Final `selectedQuestion = null`. Zero stale artifacts. This proves that 60B.43's terminal-status filtering across all six post-mutation eligibility paths eliminates the exact 60B.37-shaped stale-target persistence through live LLM-driven production code. One live Ollama call at qwen-claude:latest on http://192.168.1.111:11434. No production code changed. Status pending Rob's review.
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Experiment 60B.46 reran the exact 60B.44 closure case through one bounded live update using 60B.45/46's explicit harness metadata capture fields (`finalActiveUnknownNodeId` and `finalSelectedQuestion`). **Classification: A — LIVE CLEAN CLOSURE DIRECTLY CONFIRMED.** The enterprise-customer unknown resolved in place (unknown → resolved) and the product-launch decision also resolved in place (unknown → resolved). Both option identities preserved. Zero new nodes or edges. `finalActiveUnknownNodeId = null` (directly observed, not inferred from omission). `finalSelectedQuestion = null` (directly observed, not inferred from omission). structuralActionRequired = null. This confirms that 60B.45's harness-level metadata exposure correctly captures the production runtime's clean closure state with explicit null values rather than field omission. One live Ollama call at qwen-claude:latest on http://192.168.1.111:11434. No production code changed.
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# Experiment 60B.46 — Direct closure metadata evidence in live harness
**Date:** 2026-08-14
**Branch:** `feature/closure-metadata-capture-v0.39`
## Purpose
Confirm that when the final material customer-signing uncertainty is resolved, the production runtime directly returns:
- `finalActiveUnknownNodeId = null`
- `finalSelectedQuestion = null`
using the explicit harness fields added in 60B.45/46 rather than inferring from field omission.
## Hypothesis
A successful result should show:
```text
n_enterprise_customer_signing: resolved
n_product_launch_decision: known or resolved
addedNodes: []
addedEdges: []
finalActiveUnknownNodeId: null
finalSelectedQuestion: null
both existing options preserved (no duplication)
```
No directional recommendation is required.
## Method
One bounded live update using the 60B.44 pre-anchored fixture:
- **Fixture:** `tests/fixtures/pre-anchored-product-launch-customer-signing.json`
- **Mode:** `updateOnly` (single Update, no Start)
- **Answer:** "Yes. The enterprise customer has now confirmed in writing that they will sign if we launch this year, so the £700,000 of expected annual revenue from them is confirmed. There are no other material uncertainties between launching this year and waiting twelve months."
- **Model:** `qwen-claude:latest` via Ollama (`http://192.168.1.111:11434`)
## Call accounting
```
startCalls: 0
updateCalls: 1
totalCalls: 1
retries: 0
```
## Results
### HTTP
- **Stage:** accepted (no rejection path)
### Structural mutation
| Field | Value |
|-------|-------|
| `updatedNodes` | 2 nodes: `n_enterprise_customer_signing` (unknown→resolved), `n_product_launch_decision` (unknown→resolved) |
| `resolvedUnknownNodeIds` | `["n_enterprise_customer_signing", "n_product_launch_decision"]` |
| `addedNodes` | `[]` |
| `addedEdges` | `[]` |
### Node final states
| Node ID | Kind | Status |
|---------|------|--------|
| `n_product_launch_state` | state | provisional |
| `opt_launch_this_year` | option | known |
| `opt_wait_twelve_months` | option | known |
| `n_product_launch_decision` | unknown | **resolved** |
| `n_enterprise_customer_signing` | unknown | **resolved** |
### Direct closure metadata (60B.46 harness fields)
```
finalActiveUnknownNodeId: null
finalSelectedQuestion: null
```
### Identity preservation
- **Decision node (`n_product_launch_decision`):** PRESERVED — status changed to resolved, id unchanged
- **Launch option (`opt_launch_this_year`):** PRESERVED — status known, id unchanged
- **Wait option (`opt_wait_twelve_months`):** PRESERVED — status known, id unchanged
## Assessment
| Criterion | Result |
|-----------|--------|
| Customer factor | RESOLVED IN PLACE |
| Decision state | RESOLVED |
| Decision identity | PRESERVED |
| Launch option | PRESERVED |
| Wait option | PRESERVED |
| Active lifecycle | **NULL — CLEARED** |
| Final question | **NULL — DECISION COMPLETE** |
| New uncertainty discipline | NONE |
## 60B.44 comparison
| Field | 60B.44 (inferred) | 60B.46 (direct) |
|-------|--------------------|------------------|
| activeUnknownNodeId | inferred from omission | **null — directly exposed** |
| selectedQuestion | inferred from omission | **null — directly exposed** |
The important difference is measurement:
- **60B.44:** active/final question inferred from omission
- **60B.46:** active/final question directly exposed as raw values
## Classification: A — LIVE CLEAN CLOSURE DIRECTLY CONFIRMED
All criteria directly observed:
- ✅ customer factor resolves in place
- ✅ decision closes in place
- ✅ both options preserved
- ✅ no added unknowns
-`finalActiveUnknownNodeId = null` (direct)
-`finalSelectedQuestion = null` (direct)
## What this proves
The production confidence engine correctly performs a **clean graph-level closure** when the final material uncertainty is resolved:
1. Both the customer-signing unknown and the central decision unknown are resolved in place (no duplication, no loss).
2. The harness-observed `activeUnknownNodeId` is explicitly cleared to `null`, confirming the engine's internal active-target pointer is zeroed.
3. The harness-observed `selectedQuestion` is explicitly `null`, confirming no follow-up question remains pending.
4. No new uncertainties are introduced (zero addedNodes/edges).
## What remains weak or unproven
- Closure under contradictory/unexpected inputs (this test used a clean, expected-resolution path).
- Multiple simultaneous uncertainty resolution in a single update.
- Full-suite regression coverage for the closure metadata harness layer itself (60B.45 added focused unit tests: 67/67 pass).
- Live closure verification on production hosts beyond localhost.