contract: remove the register that aliased three semantic families

Semantic-family recovery (operator ruling 2026-09-02, recorded as
E-SIX-SEMANTIC-FAMILIES-MUST-NOT-IMPERSONATE-EACH-OTHER-1).

Removed
- basin_lanes.rs: a signed-nibble register that read sign as
  agreement/disagreement and summed children's coordinates.
- epistemic_bassin.rs: the agree/disagree pair built to repair that
  summation, including a fused 24-byte wire object V3 does not have,
  the Belnap masks, ternlog sweep, info-gain/tension adapters and the
  fixed 24-axis basis mirror.
- tests/w2b_one_node_field.rs: the test that used the A9 locus codec
  to hold a magnitude, the first point where shape was read as meaning.
- lance-graph-ogar::assert_epistemic_band_parity and its test (the
  mirrored loco band is retracted on the OGAR side).

Kept unchanged
- tenants 14 (CausalWitness) and 15 (EpisodicBasin), Qualia,
  Cam96/PairPalette, sigma_propagation, hhtl::{missing_ancestors,
  direct_children}; atoms::I4x32::sext4 returns to private.

Nothing removed here had reached persisted or live ABI: canonical_node,
soa_envelope and facet are byte-identical to the pre-#1125 tree and
ENVELOPE_LAYOUT_VERSION is unchanged. Population-basin geometry is an
accepted vacancy; no tenant, ClassView, dimensionality or axis set is
assigned in this change.

Boards regraded append-only (EPIPHANIES, LATEST_STATE, PR_ARC,
STATUS_BOARD, plan §W2b); supersession index regenerated (unchanged).

Tests: lance-graph-contract lib 1294 + integration green;
lance-graph-ogar 96 green; clippy -D warnings + fmt clean on the
contract crate.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PFnYKqw6d7TTiB9cT8eFdK

Author: claude

.claude/board/EPIPHANIES.md

@@ -1,3 +1,78 @@
+## 2026-09-02 — E-SIX-SEMANTIC-FAMILIES-MUST-NOT-IMPERSONATE-EACH-OTHER-1
+
+**Status:** OPERATOR RULING (semantic-family recovery), landed as the
+September cleanup on this branch. **Confidence:** ruled; the code removals in
+the same change are the enforcement, the forensic report the evidence.
+
+**Six semantic families, ratified as distinct:** (1) episodic / Markov loci —
+`CausalWitnessFacet`, tenant 14, sign = orientation, pointer semantics closed
+to the `Locus`/ClassView API; (2) epistemic qualia — cheap signed
+proprioceptive magnitude of the CURRENT reasoning state, shipped precedent
+`QualiaI4_16D`, stakes not logic, additive where its contract permits;
+(3) epistemic population basins — population-relative semantic geometry
+(the mammal / whale / wombat / horse / elephant examples), which has NO
+shipped signed-i4 ABI, tenant, ClassView or axis vocabulary and is an accepted
+VACANCY; (4) epistemic causality trajectory — `TrajectorySignature` /
+`RevisionTrajectory`, an ordered evolution, not a magnitude register and not
+the causal graph; (5) the causal graph; (6) the epistemic / knowledge graph.
+Invariants: same physical shape ≠ same semantics; same codec ≠ same
+ClassView; the word "basin" ≠ one mathematical object; locus ≠ magnitude ≠
+population basin ≠ causal graph; trajectory ≠ causal graph.
+
+**What the forensic pass found (four independent mistakes, four sources):**
+population coordinates treated as additive child evidence
+(`w2b_one_node_field.rs` summarise + `BasinLanes::accumulate_children`,
+#1128); that artificial cancellation "repaired" by an agree/disagree pair
+(#1129, a 24-byte wire object V3 does not have); shape equivalence read as
+semantic equivalence — a test borrowed the A9 locus codec to hold a
+magnitude, the type was then defined as the loci register's "sibling", the
+axes as their "twins" (#1128 → #1132); and a fixed 24-axis vocabulary derived
+from the loci table declared the meaning of population basins (#1129/#1132,
+OGAR #297). None of it reached persisted or live ABI: `canonical_node.rs`,
+`soa_envelope.rs`, `facet.rs` are byte-identical to the pre-#1125 tree,
+`ENVELOPE_LAYOUT_VERSION` is unchanged, no tenant was minted, no producer
+wrote either register.
+
+**deepnsm-v2 ruling:** `Cam96Space` / `PairPalette` / centroid + dispersion
+are reusable mathematical primitives; `basin_self_code` is an episodic-rail
+application of them (subject's outgoing SPO neighbourhood, version-ranged,
+`BasinRow` in tenant 15) and is NOT the population-basin representation. The
+July falsifier stands: Cam96 spread alone is not a self-uncertainty signal
+(`E-BASIN-WIDTH-IS-N-ARTIFACT-1`). Taxonomic ancestry in the key rails is
+membership/lineage, not a coordinate system; the A9 `BasinAnchor` fixture was
+a pointer stand-in, not a population representation.
+
+**Removed in this cleanup:** `basin_lanes.rs`, `epistemic_bassin.rs`,
+`tests/w2b_one_node_field.rs`, `lance-graph-ogar::assert_epistemic_band_parity`;
+OGAR: `ogar-epistemic` (0x0334), the loco calls 0x87..0x8B (`BELNAP_JOIN`,
+`INFO_GAIN`, `SIGMA_TENSION`, `ACCUMULATE`, `STANCE_ENTROPY`; census 101 → 96).
+**Preserved:** `hhtl::{missing_ancestors, direct_children}`, tenants 14/15,
+Qualia, Cam96/PairPalette, `atoms::I4x32::sext4` (visibility reverted to
+private), the generic `TERNLOG` 0x86 (independently justified by ndarray's
+`ternlog`), all `sigma_propagation` surfaces, OGAR #295 `BasinCodebook`.
+
+**Deferred, explicitly NOT done here (next falsifier-first step):** any
+population-basin tenant or ClassView; 16 vs 24 dimensions; fixed axes for the
+mammal examples; Shannon/Tarski entropy-plateau selection; the hypothesis
+that population geometry PROJECTS INTO qualia/proprioception (population →
+basins → projection → qualia → style/frontier/recipe) rather than becoming a
+competing carrier; an `EMPTY, −7..+7` nibble (EMPTY = no valid observation,
+0 = observed neutral; deterministic, total, replayable) to be falsified
+against plain i4 on sparse sign-symmetric projections; and the design survey
+that must inventory Fisher-z/Helix orientation, bgz17 / highheelbgz /
+bgz-hhtl-d phase structures, palette256 distribution and sparse-salience
+readings, Qualia, Markov loci, Cam96/PairPalette, trajectory/revision and the
+graph surfaces before any new persistent shape is proposed — asking what
+reasoning needs that is NOT already a cheap reading of an existing shape.
+Kant/Wittgenstein/Nietzsche/Hegel behaviours are to be tried as Style/Recipe
+operations over those shapes first; no new "Hegel helix" (Helix/Fisher
+geometry exists).
+
+**Process residue:** #1133 conflicts with this cleanup on
+`epistemic_bassin.rs` (deleted); its jc Hambly-Lyons + sigker + harvest work
+is independent and should land without that hunk. The pre-ban stash of a
+two-register re-cut is contaminated and is not reapplied.
+
 ## 2026-09-01 — E-PILLAR-11-GREEN-FOR-LATTICE-WALKS-LENGTH-PARAMETERIZED-1
 
 **Status:** SHIPPED (jc W6 leg, `hambly_lyons.rs`; sigker Index regime
@@ -95,7 +170,6 @@ weak — the real defect is non-cancellative ratio distortion, which needs a
 saturation flag on Contested reads). Greedy INFO_GAIN admission carries a
 published Ω(n/log n) lower bound (Golovin-Krause-Ray Thm 9); EC² is the
 adaptive-submodular repair as a rung-local script.
-
 ## 2026-09-01 — E-THE-24-AXIS-BASIS-V3-EVERY-AXIS-IS-A-GROUNDED-PRESSURE-1
 
 **Status:** BUILT on the operator's "mach weiter" — the catalogue derived

.claude/board/LATEST_STATE.md

@@ -1,4 +1,12 @@
-## 2026-09-01 — branch (PR pending): D-DCR-2b EpistemicBassin24 — CONTRACT INVENTORY DELTA
+## 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.
+- ⊘ REMOVED `lance_graph_ogar::assert_epistemic_band_parity` (its mirror is gone; OGAR retracted the 0x87..0x8B calls).
+- KEPT `hhtl::{missing_ancestors, direct_children}` (address-only helpers, semantics-neutral); `atoms::I4x32::sext4` back to private.
+- Population-basin geometry: accepted VACANCY — no tenant, no ClassView, no axis set until the falsifier-first design step.
+
+## 2026-09-01 — ⊘ REGRADED 2026-09-02, merged as #1129–#1132, then removed: D-DCR-2b EpistemicBassin24 — CONTRACT INVENTORY DELTA
+
 - `jc::hambly_lyons` **Pillar 11 GREEN for lattice walks — length-parameterized (W6, 2026-09-01)**: Theorem 5 lattice leg added (Hambly-Lyons Annals 171 §2.4 — Thm 5/6, `c = 2e·ln(1+√2) = 4.7916`, verified on the published PDF; the arXiv v2 `e` is pre-publication): all 52 reduced words of length ≤ 3 separated at depth ⌊c·L⌋, 64 tree-like words at the identity (2e-15), 64 depth-2 false merges among length-8 reduced words all separated by depth 3 ≤ ⌊c·8⌋ = 38, d = 1 collapses to exactly 7 signature classes (the `d ≥ 2` precondition). `sigker` Index regime re-worded: lossless on the tree-quotient ONLY under a walk-length budget `N ≥ ⌊c(d)·(|X|+|Y|)⌋`; depth 2 is necessary-only. Default build stays zero-dep/DEFERRED. Still red for non-lattice quantized step vectors (Thm 9 gives non-triviality without an explicit depth).
 
 - `lance_graph_contract::epistemic_bassin::{EpistemicBassin24, AxisState, BASIS_AXES(24), BASIS_PAIR_BYTES(24), AXIS_COUNT_MAX(15), info_gain_u4, sigma_tension_u4}` — the field map's value carrier as an `agree_u4[24] + disagree_u4[24]` PAIR (operator co-architect ruling: the signed net was FALSIFIED — `+3 + −3 = 0` collapsed balanced conflict into silence). Net/polarity/contest/entropy DERIVED; `Contested` is a first-class state that survives one-hop accumulation. Readout adapters grounded in shipped certificates: `info_gain_u4` (Shannon ΔH over candidate counts), `sigma_tension_u4` (quarters of `sigma_propagation::pillar_5plus_bound`; 7 = the 1.75× PASS slack); Hambly-Lyons has NO lane (sigker classification gated on jc Pillar 11, DEFERRED). **No storage minted**: the loci-never-magnitude law is scoped to the A9 READING, not tenant 14's bytes — the bassin is a classid-selected reading of the same physical lane; a separate tenant waits for one real row needing both readings simultaneously (an `EpistemicWitness = 16` mint was built and discarded uncommitted on this ruling).

.claude/board/PR_ARC_INVENTORY.md

@@ -10,6 +10,25 @@
 > 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` (cleanup, PR not yet opened) — semantic-family recovery
+
+- **Removed:** `basin_lanes.rs`, `epistemic_bassin.rs`, `tests/w2b_one_node_field.rs`,
+  `lance-graph-ogar::assert_epistemic_band_parity` + its test. Paired OGAR
+  change: `ogar-epistemic` crate removed, loco calls 0x87..0x8B retracted,
+  census re-pinned 101 → 96, `TERNLOG` 0x86 kept as generic.
+- **Locked:** the six semantic families and their non-impersonation
+  invariants (`E-SIX-SEMANTIC-FAMILIES-MUST-NOT-IMPERSONATE-EACH-OTHER-1`).
+- **Deferred:** every population-basin design decision (tenant, ClassView,
+  dimensionality, axes, plateau selection, projection into qualia, the
+  EMPTY-nibble experiment) — next step is falsifier-first design on a clean
+  tree.
+- **Docs:** EPIPHANIES entry above; LATEST_STATE delta; STATUS_BOARD
+  D-DCR-2b regraded; plan `dismech-causal-replay-v1.md` §W2b recovery note.
+- **Confidence:** High that the removal is complete for live/persisted ABI
+  (byte-identical `canonical_node.rs`/`soa_envelope.rs`/`facet.rs` vs the
+  pre-#1125 tree); #1128–#1132 and OGAR #296/#297 entries below stand as
+  history, regraded rather than rewritten.
+
 ## 2026-09-01 — lance-graph #1130 (MERGED c630ab9) — loco band mirror + armed parity; two palette rulings recorded
 
 **Added.** `epistemic_bassin::loco_band::EPISTEMIC_CALLS` (zero-dep mirror of ogar-loco's epistemic core band `0x86..0x8B`) + `lance-graph-ogar::parity::assert_epistemic_band_parity()` in the excluded armed tier — written against loco's shared-core TABLE by raw index so it compiles against any revision; the assertions carry the parity. Verified GREEN against OGAR main after OGAR #296 merged (both directions + count pin 6).