probe: PROBE-POP-READOUT-1 (D-POP-1) — VERDICT KILL, and qualia is rank-inert at the frontier

.claude/board/EPIPHANIES.md

@@ -1,3 +1,64 @@
+## 2026-09-02 — E-QUALIA-IS-RANK-INERT-AT-THE-FRONTIER-AND-POPULATION-LOSES-TO-COUNTING-1
+
+**Status:** MEASURED (PROBE-POP-READOUT-1 / D-POP-1, `pop_readout.rs`, whole
+KJV, 227,261 candidates, 9 splits x 25 shuffles, deterministic).
+**Confidence:** High on findings 1/3/4 (each is a direct measurement with a
+size-preserving null or an exact identity); Medium on 2 (a weak effect, real
+against its null, on one corpus and one label).
+
+**The pre-registered claim was KILLED.** A population-typicality readout (an
+object's Cam96 distance to its subject's own basin centroid) does not improve
+the exploration frontier's ranking: mean precision@10 falls 0.289 -> 0.011
+against the shipped `FrontierEdge::curiosity`, and lands BELOW its own
+label-shuffle null (null p95 0.133). Combining it in is worse than omitting it.
+
+**It is not noise, though.** Controlling for prefix frequency, the readout's
+partial Spearman against later recurrence is 0.090 against a null 95th
+percentile of 0.020. A weak global trend and a useless top-k coexist, because
+the extreme of the readout is degenerate (objects sitting on their own
+centroid). Precision@k probes the tail, Spearman the trend; when they
+disagree, that disagreement is the result.
+
+**The sharpest finding is about shipped code, not about the hypothesis:
+`curiosity_gestalt` cannot reorder a frontier.** Measured
+`spearman(curiosity, gestalt_magnitude) = 1.000000` under two deliberately
+contrasting `MulAssessment`s. `exploration.rs:180-215` shows why -- the
+magnitude is `base * fw * dk * flow * trust * staunen_boost * ground_gate`
+and every factor but `base` is per-GRAPH, so all per-edge variation flows
+through `curiosity` alone. MUL and qualia rescale the frontier; they never
+reorder it. Consequently the operator's framing question, "does population
+beat qualia/context alone", had an a-priori answer for any RANKING task:
+qualia carries zero ranking information at the frontier as shipped. Whether
+that is a defect or an intended global gain is a design question this entry
+does not settle -- but a weighting that cannot change an order cannot be
+evidence for or against a competing readout either.
+
+**And the control beat everything cognitive.** Plain prefix frequency reaches
+precision@10 = 0.756 against curiosity's 0.289, while curiosity is
+ANTI-correlated with recurrence (rho ~ -0.27) -- consistent with it working as
+designed (prefer the rare and unqueried) rather than failing. The rule this
+banks: any future frontier-ranking claim clears the frequency control first,
+or it has measured nothing. This is the same lesson
+`E-BASIN-WIDTH-IS-N-ARTIFACT-1` banked for held-out reliability, applied to
+ranking: a quantity that co-varies with sample count needs a partial, not a
+raw correlation. The frequency arm and the partial were a deliberate
+STRENGTHENING of the pre-registered design, added before the run and recorded
+as such in the plan.
+
+**A survey error, corrected by trying to run it:** the plan named Fisher-z and
+`RollingFloor::occupancy` as available ingredients. They are not reachable --
+`helix` is not a dependency of `deepnsm-v2`, and adding one pulls the ndarray
+git fork into that crate's build. The inventory listed primitives without
+checking the dependency edge. Under rank combination Fisher-z is inert anyway
+(a monotone transform cannot change a rank), so its disable arm is answered
+for a rank readout and open only for a magnitude one.
+
+**Consequence for the six families:** family 3 as a molecule feeding frontier
+selection is NOT licensed; a carrier is licensed even less. The vacancy
+stands. The readout's plausible home is a basin-level prior on the global
+trend rather than a top-k selector -- stated as a question, per the
+falsifier-first rule, not as a direction.
+
 ## 2026-09-02 — E-SIX-SEMANTIC-FAMILIES-MUST-NOT-IMPERSONATE-EACH-OTHER-1
 
 **Status:** OPERATOR RULING (semantic-family recovery), landed as the

.claude/board/LATEST_STATE.md

@@ -1,3 +1,9 @@
+## 2026-09-02 — branch (D-POP-1 result): PROBE-POP-READOUT-1 — INVENTORY DELTA
+
+- ADDED `crates/deepnsm-v2/examples/pop_readout.rs` — the D-POP-1 probe (no library surface, no new type, no tenant). Consumes `Cam96Space::distance`, `basin_self_code`, `partial_spearman` and `lance_graph_contract::exploration::{FrontierEdge, NarsTruth}`; produces a KILL verdict plus three side-findings (plan §6a).
+- MEASURED, not added: `FrontierEdge::curiosity_gestalt` is RANK-INERT — its magnitude is a per-graph scalar multiple of `curiosity` (`exploration.rs:180-215`), so MUL/qualia cannot reorder a frontier. Any consumer treating the gestalt magnitude as a distinct ranking key is using a rescale.
+- UNCHANGED: no contract type added, removed or re-read. Family 3 remains a vacancy.
+
 ## 2026-09-02 — branch (cleanup, no PR yet): semantic-family recovery — CONTRACT INVENTORY DELTA
 
 - ⊘ REMOVED `lance_graph_contract::epistemic_bassin` (all of it: `EpistemicBassin24`, `AxisState`, the Belnap masks, `sweep_ternlog`/`eval_ternlog`, `info_gain_u4`, `sigma_tension_u4`, `loco_band`, `axes`) and `lance_graph_contract::basin_lanes` — operator semantic-family ruling 2026-09-02 (`E-SIX-SEMANTIC-FAMILIES-MUST-NOT-IMPERSONATE-EACH-OTHER-1`). The 2026-09-01 inventory rows below are regraded ⊘ in place; nothing they named reached a tenant, a layout version or a producer.

.claude/board/PR_ARC_INVENTORY.md

@@ -10,6 +10,21 @@
 > census §8.3 trap 10: read the body FIRST, then open for write — never
 > inline both in one expression.
 
+## 2026-09-02 — lance-graph branch `claude/medcare-rs-continue-6nhbxn` (D-POP-1 result PR, after #1135) — PROBE-POP-READOUT-1
+
+- **Added:** `crates/deepnsm-v2/examples/pop_readout.rs` (probe only, no library
+  surface); plan §6a RESULT; EPIPHANIES entry; LATEST_STATE delta; STATUS_BOARD
+  D-POP-1 -> Shipped (KILL).
+- **Measured:** VERDICT KILL on the pre-registered claim; `curiosity_gestalt`
+  rank-inertness at rho = 1.000000 over 227,261 candidates; frequency control
+  p@10 = 0.756 vs the shipped ranker's 0.289; population partial rho 0.090 vs
+  null p95 0.020.
+- **Deferred:** the Fisher-z and RollingFloor legs (helix unreachable from
+  deepnsm-v2); any population carrier, tenant, ClassView or axis set -- the
+  vacancy stands and this result narrows rather than widens it.
+- **Confidence:** High for the KILL and the two identity/control findings;
+  Medium for the weak non-null trend (one corpus, one label).
+
 ## 2026-09-02 — lance-graph branch `claude/medcare-rs-continue-6nhbxn` (survey PR, opened after #1134) — post-teardown buildup survey v1
 
 - **Added:** `.claude/plans/post-teardown-buildup-survey-v1.md` (survey,

.claude/board/STATUS_BOARD.md

@@ -3,7 +3,7 @@
 | D-id | deliverable | status |
 |---|---|---|
 | D-POP-0 | the survey itself: six-family inventory, atom/operator inventory, family×operator legality matrix, molecule candidates, gap list (plan §§1–5) | **Shipped (plan-only, this PR)** |
-| D-POP-1 | PROBE-POP-READOUT-1: composed population readout (Cam96 centroid distance → Fisher-z → occupancy bucket) vs `curiosity` / `curiosity_gestalt` at predicting later-confirmed frontier edges on the KJV stream; size-preserving shuffle null; PASS/KILL pre-registered in plan §6 | **Queued** — needs the `v0.1.0-cam96-data` + Gutenberg #10 fetch; one example binary, no new types |
+| D-POP-1 | PROBE-POP-READOUT-1: composed population readout (Cam96 centroid distance → Fisher-z → occupancy bucket) vs `curiosity` / `curiosity_gestalt` at predicting later-confirmed frontier edges on the KJV stream; size-preserving shuffle null; PASS/KILL pre-registered in plan §6 | **Shipped — VERDICT KILL** (`pop_readout.rs`, 2026-09-02; `E-QUALIA-IS-RANK-INERT-AT-THE-FRONTIER-AND-POPULATION-LOSES-TO-COUNTING-1`, plan §6a). Population readout degrades frontier p@10 0.289 -> 0.011, below its own shuffle null; real partial rho 0.090 vs null p95 0.020 (weak but non-null global trend). Side-findings: `curiosity_gestalt` is rank-inert (rho = 1.000000 vs `curiosity` over 227,261 candidates, two assessments); plain frequency p@10 = 0.756 beats every cognitive arm; helix (Fisher-z / RollingFloor) is not reachable from deepnsm-v2, so those legs are NOT RUN |
 | D-POP-2 | contradiction write-back producer (`elect_peers` → `WitnessLens::write_register`) — the one cheap gap that unblocks the contradiction-driven-revision molecule (plan §4) | **Queued** — not before D-POP-1 reports |
 
 ## dismech-causal-replay-v1

.claude/board/SUPERSESSION-INDEX.md

@@ -92,7 +92,7 @@ a licence to act on it.
 | **READ** | `mul-consumer-census-v1` | `GateDecision` | MEASUREMENT COMPLETE — 2026-08-27. Measureme | 1/2 |
 | **READ** | `mul-ewa-trust-propagation-v1` | `GateDecision` | PROPOSED — PLAN/BOARD ONLY. Measure-before-c | 1/3 |
 | **READ** | `persistence-artifact-backed-commit-v1` | `persist_cycle` | RATIFIED (operator ruling 2026-08-09). Phase | 0/0 |
-| **READ** | `post-teardown-buildup-survey-v1` | `StepMask` | SURVEY, read-only, plan-only (no code, no te | 3/4 |
+| **READ** | `post-teardown-buildup-survey-v1` | `StepMask` | SURVEY, read-only, plan-only (no code, no te | 4/4 |
 | **READ** | `r2il-bpe-typed-genetic-recombination-v1` | `GateDecision` | PROPOSAL, §7's three falsifiers now RUN (see | 1/1 |
 | **READ** | `scientific-kg-substrate-v1` | `GateDecision` | PROPOSED — **scoping doc**, no code. Records | 8/9 |
 | **READ** | `self-reasoning-substrate-v1` | `GateDecision` | PROPOSED — doc-only. No code, no contract ch | 5/5 |

.claude/knowledge/never-truncate-a-file-you-still-need-to-read.md

@@ -57,6 +57,34 @@ correctness or ordering — a same-length corruption passes this check.
 A non-blocking PreToolUse guard (`.claude/hooks/anti-pattern-matching.sh`)
 injects this rule when a Bash command matches the write-while-reading shape.
 
+## Recurrence — 2026-09-02, EPIPHANIES.md, 25,172 -> 61 lines
+
+The rule fired again, in a session that had this file's own prohibition in its
+context. A board-hygiene pass prepended a new entry with
+`open(p,'w').write(E + open(p).read())` -- the exact prohibited shape --
+inside a Python heredoc that ALSO carried two CORRECT prepends
+(`b = open(p).read()` first, then `open(p,'w')`) for LATEST_STATE and
+PR_ARC_INVENTORY. Writing the safe form twice in the same script did not
+prevent writing the unsafe form once.
+
+What caught it: the mandatory post-write `wc -l` comparison against
+`origin/main`, printed for every touched board file in the same command. The
+line `EPIPHANIES.md main=25172 now=61` was unmissable, and restoration was a
+`git checkout` plus a re-prepend, because the destruction happened in the
+working tree and was never committed.
+
+Two lessons this recurrence adds:
+
+1. **The guard has to be in the same breath as the write.** The rule as
+   stated is a prohibition an author must remember; the `wc -l` check is a
+   detector that runs whether or not they remembered. Print the before/after
+   line counts in the SAME command that writes, every time, and never commit a
+   board pass without reading that output.
+2. **Mixed-safety scripts are the dangerous shape.** A heredoc containing
+   several prepends is where this hides: the correct ones make the script
+   look reviewed. Prefer one helper used for every prepend in a pass over
+   three hand-written ones.
+
 ## Cross-reference / retrieval footer
 
 - Restore PR: lance-graph **#1082** (merge `82679c3a`); prohibition PR **#1083**

.claude/plans/post-teardown-buildup-survey-v1.md

@@ -241,3 +241,97 @@ name as storage.
   held-out figures are 0.766 / 0.624.
 - The tracers reported the working-tree HEADs as `f3eb2f6` (lance-graph) and
   `1eb2ddb` (OGAR); both are the trees the merges `20eaf7f` / `954fc52` carry.
+
+---
+
+## 6a. PROBE-POP-READOUT-1 — RESULT: **KILL** (measured 2026-09-02)
+
+Shipped as `crates/deepnsm-v2/examples/pop_readout.rs`. Deterministic; 89 s on
+the whole book. Inputs: `bible_wave --export` (70,393 triples over 31,102
+verses) plus the trained `v0.1.0-cam96-data` codebook (12,543 words, 12 axes).
+9 split points × 25 shuffles; 227,261 candidates pooled.
+
+```
+cargo run --manifest-path crates/deepnsm-v2/Cargo.toml --example bible_wave  -- pg10.txt --export spo.tsv
+cargo run --manifest-path crates/deepnsm-v2/Cargo.toml --example pop_readout -- spo.tsv
+```
+
+| arm | mean p@10 | mean p@25 | mean p@100 | ρ vs label |
+|---|---|---|---|---|
+| A0 `curiosity` (shipped ranker) | 0.289 | 0.173 | 0.249 | ≈ −0.27 |
+| A1 `curiosity_gestalt` (assessment A) | 0.289 | 0.173 | 0.249 | ≈ −0.27 |
+| A1B `curiosity_gestalt` (assessment B) | 0.289 | 0.173 | 0.249 | ≈ −0.27 |
+| **AF frequency (control)** | **0.756** | **0.751** | **0.674** | **+0.27** |
+| AP population readout alone | 0.011 | 0.036 | 0.076 | +0.09 |
+| A2 = A0 + AP (rank mean) | 0.011 | 0.022 | 0.069 | −0.06 |
+| A3 = A1 + AP (rank mean) | 0.011 | 0.022 | 0.069 | −0.06 |
+
+Decisive statistics:
+
+| quantity | value |
+|---|---|
+| real partial ρ(AP, label \| freq) | **0.090** |
+| null partial ρ — mean / 95th pct | −0.018 / 0.020 |
+| mean(A2 p@10) − mean(A0 p@10) | **−0.278** |
+| mean(A2 p@10) vs its null mean / 95th pct | 0.011 vs 0.031 / 0.133 |
+| mean(AP p@10) vs its null mean / 95th pct | 0.011 vs 0.034 / 0.144 |
+
+Pre-registered rule: PASS iff (a) real partial ρ > null p95 + 0.02 **AND**
+(b) Δp@10 ≥ 0.05 and A2 p@10 above its null p95. **(a) passes, (b) fails
+decisively → VERDICT KILL.**
+
+### The four findings
+
+1. **KILL on the pre-registered claim.** The population readout does not
+   improve frontier ranking; it degrades it, 0.289 → 0.011 at p@10, and lands
+   *below its own shuffle null* (0.011 vs a null p95 of 0.133). Combining it
+   into the ranking is worse than not having it.
+2. **The signal is nevertheless real and null-surviving.** Controlling for
+   frequency, "typical for its subject" carries partial ρ = 0.090 against a
+   null p95 of 0.020. A weak global monotone trend and a useless top-k coexist:
+   the extreme of `−pop` is degenerate (objects sitting essentially *on* their
+   centroid) while the overall ordering still leans the right way. Precision@k
+   probes the tail; Spearman probes the trend; they disagree here, and the
+   disagreement is the finding, not an error.
+3. **Qualia is rank-inert at the frontier — measured, not argued.**
+   `spearman(A0, A1) = 1.000000` and `spearman(A0, A1B) = 1.000000` pooled over
+   227,261 candidates under two deliberately contrasting `MulAssessment`s.
+   Reading `exploration.rs:180-215` says why: `magnitude = base · fw · dk ·
+   flow · trust · staunen_boost · ground_gate`, and every factor except `base`
+   is per-GRAPH, identical for every candidate. `curiosity_gestalt` can
+   rescale a frontier; it can never reorder one. So "does population beat
+   qualia/context alone" had an a-priori answer for any ranking task: qualia
+   contributes exactly zero ranking information at the frontier today.
+4. **Plain counting dominates every cognitive arm.** Prefix frequency reaches
+   p@10 = 0.756 against the shipped ranker's 0.289 — 2.6× — and the shipped
+   ranker is *anti*-correlated with recurrence (ρ ≈ −0.27). That is consistent
+   with `curiosity` working as designed (it prefers the rare and unqueried, and
+   rare things do not recur) rather than being broken; but it means the
+   frontier ranker is not selecting for what the corpus goes on to confirm, and
+   any future ranking claim must clear the frequency control first.
+
+### Honest limits
+
+- One corpus (KJV), one label (exact-triple recurrence), one basin definition
+  (a subject's outgoing objects). This KILLs "a population readout improves
+  frontier ranking on the recurrence label"; it does not show population
+  geometry is useless, and recurrence is not what `curiosity` is built to
+  maximise.
+- The codebook is Bible-vocabulary and held-out ρ 0.766
+  (`E-CAM96-REVIEW-CORRECTIONS-1`; never cite the crate doc's in-sample 0.828).
+- The Fisher-z and `RollingFloor`-occupancy legs the plan named were **NOT
+  RUN**, for a reason the survey missed: `helix` is not a dependency of
+  `deepnsm-v2`, and adding one pulls the ndarray git fork into this crate's
+  build. Under a rank-based combination Fisher-z is analytically inert anyway
+  (a strictly monotone transform cannot change a rank), so the plan's
+  Fisher-z disable arm is answered for a rank readout and remains open only
+  for a magnitude-valued one.
+
+### Consequence
+
+Family 3 as a **molecule feeding frontier selection** is NOT licensed by this
+measurement — and a carrier is licensed even less than before. The vacancy
+stands. What the result does license is a narrower next question, stated as a
+question and not a direction: the readout's honest home may be the global
+trend (a basin-level prior) rather than a top-k selector, and any such probe
+must carry the frequency control and the shuffle null from the start.