quack: the rail is a needle, not a mask — plus the Raumgewinn arc and D-HXP-8 arm 1 - #1239
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…Rust Tests settled Post-merge hygiene for lance-graph #1235 (e8d3c19, merged 20:25:15Z): PR_ARC_INVENTORY + LATEST_STATE carry the merged-PR record (16 files, +4227/-11, 25 commits, no contract inventory delta — the one contract file touched is recipes.rs, two citations plus their guard). EPIPHANIES, two entries that waited for a CI verdict to exist: - E-THE-SKIP-LEVER-LIVES-ONLY-BELOW-THE-DENSITY-WHERE-D-GTM-0N-SAYS- SWITCH-TO-SPARSE-AND-THE-CLUSTERED-99-90-IS-PREFIX-ARITHMETIC-1 — both readers dropped D-GTM-0n's "mask loses to sparse below 0.1 %" bound; §8a's two live regimes sit at 0.055 % and 0.047 %, so the A1 falsifier is missing a SPARSE arm, not a fused one. The clustered 99.90 % is 1023/1024 by construction: a 50-bit prefix on `i << 8` leaves 8 + 6 free bits, i.e. exactly one 64-row word — the 10-bit handoff. The prefix-length family below 50 is labelled CONJECTURE with its falsifier named. - E-THE-SLOWEST-GATE-IS-THE-ONE-YOUR-OWN-PUSH-CADENCE-CANCELS-1 — the rust-test.yml ledger for the branch: 33 runs, 19 cancelled, 7 success, 7 failure; on #1235, one completion in fourteen runs. The fix waited 75 minutes for a test verdict, three of its four heads cancelled by my own next push; Build green confirmed one crate's compile, not the suites; and the check-in prompt named the wrong job (the quack step is `test` step 17, not member-tests). Quack suite verified by log on d77cd4e: 14 passed. STATUS_BOARD: D-MRX-1..6 status cells flipped from "In PR (PR3)" to Shipped — #1226 merged 2026-09-14 (0b1ebaa) and the cells were never flipped; nothing else in those rows touched. Gates: append-only 9/9 (nothing shrank), citation-decay 0 new since origin/main (three anchor mismatches in the new text fixed before commit), supersession index regenerated last. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
… remainder Operator ruling, 2026-09-15, verbatim: "256:256 is exactly 64k. Es darf gar keinen Rest geben." A rail is u8:u8 — 256 x 256 = 65 536 rows, exactly the A1 probe's N — and its hi byte addresses one of 256 blocks of 256 rows: four 64-row words, one 256-bit vector. A word is a quarter of a block, and a quarter is a remainder. adaptive_order_probe.rs: - reports 64-row words (the executor's unit) AND 256-row blocks (the rail's); - cuts the clustered prefix on the byte boundary: /48, one whole block. The earlier /50 pinned two bits of the lo byte — reading across u8:u8 — and selected a quarter block; - const-asserts N == 256 * 256 && BLOCKS * BLOCK_WORDS == WORDS, and dead_blocks asserts that as_chunks' remainder is empty; - prints the ramp the and_by_skip doc quotes, so the quoted figure is a re-runnable measurement rather than a one-off instrumentation. Re-measured: clustered 99.90 -> 99.61 % (= 1 - 1/256, identical in both units, predicted before the run), survivors 31 -> 116 (0.177 %, ABOVE the D-GTM-0n 0.1 % bound that the (5) entry had both regimes under); selective in blocks 0.00 -> 61.91 % (its written order skips no block at all; 80.66 % in words). Ramp [4080, 3060, 2040, 1020, 0] words / [1020, 765, 510, 255, 0] blocks — monotone, linear, in both units. Moderate and permissive still 0. lib.rs: the and_by_skip doc table carries both units; the "36 vs 31 rows, 19 points apart" argument becomes "116 vs 36 and it skips MORE — ranked by selectivity the two come out backwards"; the prefix-halving test keeps /49 and /50 as comparator arithmetic and names which prefixes are rail cells. mask-risc MaskOp::Pred doc: one paragraph naming the rail's unit. No lowering behaviour changed; quack 14 + mask-risc 48 tests green, clippy -D warnings clean on both crates, all targets. Board: E-256-BY-256-IS-EXACTLY-64K-THE-RAILS-SKIP-UNIT-IS-ITS-HI-BYTE-AND-A- QUARTER-BLOCK-IS-A-REMAINDER-1; the (5) entry ⊘-regraded in place at both affected sections; matrix §8a and D-QCK-9 ⊘-annotated; LATEST_STATE (4). Gates: append-only 9/9, citation-decay 0 new (the (5) entry's probe citation moved with the file), supersession index regenerated last. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
d80b802 Operator clarification, 2026-09-15, verbatim: "Ich meine 64k sind 2 byte. 256:256 sind 2 byte für die exakte SoA inna given table. Das gilt nur für needle in a haystack x table. Für Maske über 64k als Fläche bräuchte es entsprechend mehr. Eine Mögliche Lesart für masking wäre 256:256⁶, also genau 96 bit, oder bitpacked 64k." d80b802 read "256:256 is exactly 64k, no remainder" as a tiling of the mask (hi byte = skip unit, quarter block = remainder). That was my derivation, and it is not what was meant: a u8:u8 rail is the exact SoA row ADDRESS of a 64k table — 256 x 256, every value a row, every row a value; that bijection is the "no remainder" — needle in a haystack x table. A mask over the 64k area is a different, larger object: bitpacked 1024 words = 256 four-word blocks (no remainder in either unit), and the rail dictates no skip unit. The operator's candidate reading for masking, 256:256^6 = the 96-bit facet payload, is recorded as either six exact needles (a sparse survivor set of at most six rows in the register the facet already has — the sparse arm the A1 falsifier lacks) or six per-rail prefixes; not built. Docs only, no number moved: the probe header, its BLOCK_ROWS / dead_blocks / const-assert messages and the clustered-term comment; lib.rs's crate doc, and_by_skip doc and the prefix test's comment; mask-risc MaskOp::Pred's doc. The 256-row block is now what it is — the OGAR tier tile's 2-nibble prefix cell, a coarser skip unit an executor may use — and the two-unit reporting stays because on scattered survivors the units disagree. The /48 cut stays: nibble-aligned under the tile canon, a separate and older ruling. Probe reproduces [4080, 3060, 2040, 1020, 0] / [1020, 765, 510, 255, 0]; quack 14 + mask-risc 48 tests green; clippy -D warnings clean; fmt clean. Board: E-THE-RAIL-IS-A-NEEDLE-NOT-A-MASK-256-BY-256-IS-THE-EXACT-ROW-ADDRESS- AND-A-MASK-OVER-THE-AREA-IS-ANOTHER-OBJECT-1; (7) ⊘-regraded in place, LATEST_STATE (4), matrix §8a and D-QCK-9 ⊘-annotated; LATEST_STATE (5). Gates: append-only 9/9, citation-decay 0 new (the (5) entry's probe citation moved with the file again), supersession index regenerated last. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
…asured Operator, 2026-09-15, verbatim: "Meine Lieblingsvariante ist V3 Format. Jeder beliebige Gedanke kann sich selbst × Abstand from root 0–96 bit maskieren und somit eine exakte stufenlose Auswahl treffen mit close to 1 CPU cycle." A mask is a pair (self, d): the unit's own 96-bit payload as the pattern, its distance from root as the radius, care(d) = the first d bits in root->leaf order, and the selection is (u ^ self) & care(d) == 0 per row — one AND, one compare, both vectorised. That is exactly ndarray::simd::ternary_match_strided_to_mask (12-byte pattern + care over a 16-byte stride, shipped) and, per lane, Pred::MatchU64 / Filter::prefix_u64. What is missing is the strided Operand in mask-risc, which its own LaneRef::U64 doc names (PR4/PR5), and a 97-entry care(d) table per ClassView carving — the root->leaf order is the carving's, not memory's. adaptive_order_probe.rs: a stepless radius sweep, d = 40..=56 on the address lane, prefix first then the clustered conjuncts. Every d selects exactly 2^(56-d) rows (asserted per step); the skip is a step function of the UNIT, not of d — words saturate at d = 50 (99.90 %), blocks at d = 48 (99.61 %), and between 48 and 50 the units part ways. So /50 was never illegal: it is where the word-skip saturates. The (5) entry's prefix family, labelled CONJECTURE and withdrawn in (7), is measured and restored. Docs: the three sites that read as "only nibble-aligned prefixes are legal" now say the radius is stepless and nibble boundaries are codebook cells. No lowering behaviour changed; 62 tests green, clippy -D warnings, fmt. "Close to 1 CPU cycle" is NOT measured here: pre-registered as a Phase 7 falsifier (cycles/row of the strided ternary match over 64k x 16 B; pass <= 1 cycle/row sustained). Board: E-A-THOUGHT-MASKS-ITSELF-BY-ITS-DISTANCE-FROM-ROOT-THE-V3-FACET-IS- THE-MASK-AND-THE-RADIUS-IS-STEPLESS-1; one ⊘ line each on (7) and (8); matrix §8a and D-QCK-9 ⊘-annotated; LATEST_STATE (6). Gates: append-only 9/9, citation-decay 0 new (the (5) entry's probe citation moved with the file), supersession index regenerated last. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
…; the fused row predicate is the gap
Operator, 2026-09-15, verbatim: "You could even say it's popcount × self."
(9)'s (u ^ self) & care(d) == 0 is popcount((u ^ self) & care(d)) <= 0.
Generalised to k, (self, care, k) is one predicate family: care(d) with
k = 0 is the exact stepless prefix; care = all with k > 0 is the Hamming
ball; distance from root and Hamming distance are the same popcount over
different care masks, both 0..=96.
Census (names verified in the tree): k = 0 ships one-pass as
ternary_match_{u32,u64,strided}_to_mask and Pred::MatchU32/U64. k > 0 does
not ship as a mask builder — hamming_batch_raw returns a per-row Vec<u64>,
masked_popcount_batch is per word and one XOR short; mask-risc has no
Pred::HammingLe. The fused popcount((row ^ pattern) & care) <= k -> mask
kernel plus predicate is the gap, named, not built. Terminal::Count over
the (9) mask is reading 2 — |ball(self, d)| — which the probe's sweep
already prints as `rows`.
Fence (I-VSA-IDENTITIES applied, not a new ruling): k > 0 is a distance
only on Hamming-meaningful bits — planes, bipolar identities, the tree via
care(d) — never over palette256² rails or CAM-PQ codes, whose distance is
the 256x256 LUT.
Board only: EPIPHANIES (10), LATEST_STATE (7); Phase 7 gains a second
pre-registered arm (k > 0 cycles/row). Gates: append-only 9/9,
citation-decay 0 new, supersession index regenerated last.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
…ric is lzcnt, already filed Operator, 2026-09-15, verbatim: "Der 'Nachteil' beim popcount ist daß Ähnlichkeit auch elephant : Wal findet — Ähnlichkeit im oberen Bereich." A root->leaf code ranks its positions; popcount counts disagreements wherever they are. A cousin parting by one bit at the order level scores 1, a sibling parting by four bits at the leaf scores 4 — the cousin outranks the sibling. The similarity is real (the shared upper tiers are shared ancestry) but it answers "how much do we share", and the tree asks "how deep do we agree". That is lzcnt(u ^ self) in root->leaf order — one instruction on the same XOR, >> 2 the level, >> 4 the tier (the canon's shift, never a branch). The substrate names it already: NiblePath::common_prefix_depth, "the radix-trie nearest-neighbor measure"; its branchless one-liner is the open ISS-SHARED-PREFIX-TIERS-IS-TIER-COARSE-AND-BRANCHES, which now carries the semantic motivation beside the branch count. Composition: on tree rails the (9) prefix (self, d) is lcp >= d and ships as the ternary match; the per-row depth VECTOR (u8 per row, for ranking) is the missing vectorised piece — ndarray has no lzcnt primitive. (10)'s fused popcount <= k gap is thereby scoped to exchangeable-bit carriers (planes, bipolar identities). heel_weighted_hamming is the middle ground, recorded, not recommended. No Phase 7 arm added: lzcnt costs what popcnt costs. Board only: EPIPHANIES (11), LATEST_STATE (8), one ⊘ line each on (10) and on the issue. Gates: append-only 9/9, citation-decay 0 new, supersession index regenerated last. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
… toolkit ships, and board games are its falsifier (D-HXP-8 queued)
Operator, 2026-09-15, verbatim: "Der Vorteil von HDR popcount stacking
early exit Belichtungsmesser statistical confidence interval thresholds
preheating rolling floor bucket assignment ist jedoch daß es für hexagon
Substrate hilfreich ist — der sprichwörtliche Raumgewinn beim Go
boardgame." / "Und witzigerweise müsste tiktaktoe gobbang, go damit sogar
falsifiable sein."
The pair with (11) is already shipped vocabulary: head2head's
WinnerCriterion::{DissonanceMin, SupportSpread} — infight vs Raumgewinn
(D-H2H-1). lcp asks how deep one agreement goes; stacked popcount asks how
many neighbours agree. Every word in the operator's list names a surface:
ndarray hpc::cascade::Cascade::{calibrate, expose, observe, recalibrate}
(expose IS the Belichtungsmesser reading), adaptive_resolution,
PackedDatabase::cascade_query; perturbation_sim::rolling_floor::
{RollingFloor::{preheat, observe, band}, TierFloors::stack_early_exit};
the doctrine line in observer-effect-tfpn-doctrine.md. Nothing to build
for the toolkit; what is unbuilt is the evidence that it helps the hexagon
— E-Q8 is the one measured non-result (degree 1 sufficed on that task).
Pre-registered, not run: D-HXP-8, board games as the falsifier — cells as
units, six rails as neighbours (Hex exact; Go 4 of 6; tic-tac-toe / Gobang
8 directions), evaluation by popcount stacking through stack_early_exit.
F1 agreement with the solved value (tic-tac-toe >= 95 % of 765 positions
with a shuffled-rail null; Go end positions == flood-fill scoring), F2
early exit changes no verdict and exposes fewer tiers, F3 mandatory
degree-1 ablation must DROP F1 (flat = the task did not exercise the six).
KILL at chance or flat. Order tic-tac-toe -> Hex -> Gobang -> Go.
Board only: EPIPHANIES (12), one ⊘ line on (11), STATUS_BOARD D-HXP-8
(Queued), hexagon-plasticity-v1.md §12 appended, LATEST_STATE (9),
supersession index regenerated last. Gates: append-only 9/9,
citation-decay 0 new.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
…whole board → the stack is a census), not a KILL; F0 gate + board records The Raumgewinn falsifier's first arm ran (tictactoe_raumgewinn.rs): 4520 reachable non-terminal positions, 627 classes, F1 tie-aware 0.5797 == the random-move baseline with the shuffled-rail null collapsed to a point. Read against the pre-registration that is "F1 at chance" — a KILL. It is not: on 3×3 every cell's Chebyshev rings 1 ∪ 2 reach all 8 other cells, so the full stack of any ring-additive intensity is the board census, identical for every candidate (measured: distinct FULL-stack values per position 1.000, every candidate tied in 1.0000 of positions). The fixture cannot read F1/F2/F3 at all. Added the F0 fixture-validity gate the pre-registration lacked: computed from the rails alone before any position is scored (reach per cell vs board − 1), asserted silent on the degree-1 rails (reach 1 of 8), and the verdict now prints "F0 DEGENERATE — F1 not read" instead of a KILL. The readable arm needs board diameter > 2 × deepest ring: Gobang 15×15, Go 9×9, Hex ≥ 7×7 (Hex 5×5 fails F0). Meter note, measured on the exploratory signed arm: stack_early_exit returns the PARTIAL sum at the exit tier; with signed tiers (own − opp) that is not a bound on the full stack and the early exit changed the top move in 10.13 % of positions (F2 0.8987 vs 1.0000 on the non-negative arm). The doc's "decision is confident" premise is non-negative stacking and is unstated — filed in TECH_DEBT, no code change to the meter. Board: EPIPHANIES (13) E-RAUMGEWINN-NEEDS-A-HORIZON-SMALLER-THAN-THE-BOARD-TIC-TAC-TOE-HAS-NONE-SO-ARM-1-IS-F0-DEGENERATE-NOT-A-KILL-1, plan hexagon-plasticity-v1.md §12a, STATUS_BOARD D-HXP-8 → In progress, LATEST_STATE (10), TECH_DEBT 2026-09-15. Gates: fmt + clippy -D warnings on the example, probe exit 0, citation-decay 0 new, supersession index unchanged. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
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📝 WalkthroughWalkthroughThe PR adds a tic-tac-toe Raumgewinn falsification example, expands adaptive skip measurements from words to words and blocks, corrects rail-address terminology, and records experimental results, fixture limitations, CI observations, and technical debt. ChangesResearch probes and measurement corrections
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~45 minutes Change: Other Sequence Diagram(s)sequenceDiagram
participant PositionEnumeration
participant MemoizedNegamax
participant CandidateScoring
participant VerdictLogic
PositionEnumeration->>MemoizedNegamax: enumerate reachable positions and solve optimal moves
MemoizedNegamax->>CandidateScoring: provide ground-truth moves
CandidateScoring->>CandidateScoring: compare early-exit and full-stack scores
CandidateScoring->>VerdictLogic: provide F1, F2, F3, and fixture-validity metrics
Merge Risk: 🟡 Moderate · up to The recorded experimental conclusions may not match the implemented scoring or documented populations and units. These research-validity issues should be corrected before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 26 functions across 4 files. (10 skipped: 10 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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Inline comments:
In @.claude/board/EPIPHANIES.md:
- Around line 162-164: Update the F1 definition in the pre-registration to use
the 627 non-terminal positions scored by the probe, or explicitly define how
terminal positions contribute; ensure the denominator matches the stated scored
population.
- Around line 703-704: Update the carry-forward density entry in EPIPHANIES.md
to replace the stale clustered-density value of 0.047% with the corrected /48
value of 0.177%, or explicitly label 0.047% as the superseded /50 measurement;
retain the selective-regime value of 0.055% and its relationship to the 0.1%
bound.
- Around line 167-169: Define a deterministic F3 flatness rule before using DROP
or flat as kill conditions, including a numeric tolerance or explicit
statistical criterion and rounding behavior. Document the rule in the EPIPHANIES
guidance and ensure the reported degree-1 comparison is evaluated consistently
under it.
- Around line 503-506: Update the documented skip-unit definitions and
measurements in the affected EPIPHANIES section so 64-row words and 256-row
blocks over 65,536 rows produce 1,024 words and 256 blocks, with one live block
reporting 1,020 skipped words and 255 skipped blocks. Align the associated probe
assertions with these corrected values and remove the inconsistent 4,080/4,096
and 1,020/1,024 unit interpretations.
In `@crates/lance-graph-quack/examples/adaptive_order_probe.rs`:
- Line 134: Correct the terminology so rails remain exact row addresses and the
256-row block is described as the tile/executor skip unit: update the comment at
crates/lance-graph-quack/examples/adaptive_order_probe.rs:134, the block-ranking
description at
crates/lance-graph-quack/examples/adaptive_order_probe.rs:486-488, and the
corresponding wording at crates/lance-graph-quack/src/lib.rs:357-359.
In `@crates/perturbation-sim/examples/tictactoe_raumgewinn.rs`:
- Around line 95-99: Add a focused #[cfg(test)] module alongside solve and the
related probe implementation, covering negamax results, filtering to reachable
positions, horizon detection, rail shuffling, and signed-arm ranking. Use small
deterministic board scenarios and assert each behavior directly without broad
integration coverage.
- Around line 402-403: Update the candidate-ranking flow around stack_early_exit
so Arm::Net ranks by the full-stack result rather than res.stacked, while
retaining the early-exit value for the F2 comparison. Rerun the probe and
refresh the recorded NET measurements to match the corrected ranking.
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.claude/board/EPIPHANIES.md.claude/board/ISSUES.md.claude/board/LATEST_STATE.md.claude/board/PR_ARC_INVENTORY.md.claude/board/STATUS_BOARD.md.claude/board/SUPERSESSION-INDEX.md.claude/board/TECH_DEBT.md.claude/plans/duckdb-to-v3-translation-matrix-v1.md.claude/plans/hexagon-plasticity-v1.mdcrates/lance-graph-mask-risc/src/ir.rscrates/lance-graph-quack/examples/adaptive_order_probe.rscrates/lance-graph-quack/src/lib.rscrates/perturbation-sim/Cargo.tomlcrates/perturbation-sim/examples/tictactoe_raumgewinn.rs
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…ections Three doc comments in lance-graph-quack called the 256-row block "the rail's unit". A rail is an exact ROW ADDRESS (the needle), never a granularity of the mask — conflating the two invites reading a block-granular skip as something a rail performs. Renamed to "the 256-row block unit" at all three sites, with a pointer to Filter::prefix_u64's note where the distinction is stated. EPIPHANIES gains four append-only correction blocks, each verified against the file rather than against stale line numbers: the F1 denominator (score against the 627 positions that have a move, not 765 including terminals); a proposed-and-labelled-unpinned tolerance for what counts as flat vs DROP, derived from the entry's own n and p; the skip-unit arithmetic, whose printed counts carry totals one granularity finer than each column's label, so the ratios survive but the raw numbers do not; and a stale 0.047% density carried forward past its own correction to 0.177%. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
…l was that score() ranked both arms by StackResult.stacked, which is the cumulative sum up to and including the exit tier only — the true full stack iff exit_tier == 3. The probe's own meter note already said a partial is not a bound under signed terms and measured early exit changing the top move in 10.13% of positions; the ranking code did not honour it. Agreement keeps the early-exit value (non-negative terms, so the partial IS a bound); Net ranks the full stack. F2 stays arm-independent by construction and is untouched. Re-measured, and the uncomfortable half is the point: Net's mean distinct stacked value goes 1.157 -> 1.000. Entry (13) reported the FULL-stack figure as 1.000 on both arms and was right; the scored quantity showed 1.157, which read as "Net has a little discrimination where Agreement has none." It has none. That 0.157 was the artifact. Two corroborating collapses nobody arranged: the null shuffle degenerates to a single point, and F1 lands exactly on the random baseline. F0 DEGENERATE is unchanged and strengthened — it now holds identically on both arms. A bug whose output agrees with your conclusion is the hardest kind to see, and nothing could have caught this: no test distinguished ranking-by-early-exit from ranking-by-full-stack for the Net arm. There is one now, plus 7 more on the probe's primitives — negamax exact values, the symmetry-class relation, three Horizon cases, and the rail shuffle's permutation invariants. Board: EPIPHANIES (14) supersedes (13)'s Net row and closes the same-day unpinned flat-vs-DROP tolerance proposal by measurement — the drop it was opened to adjudicate is now +0.0011. Unrelated drive-by, named rather than hidden: examples/comma_awareness.rs carried a hex literal clippy rejects for uneven digit grouping, which made `clippy --all-targets -D warnings` fail for the whole crate and so blocked the gate this commit needs. Regrouped 0xC0FF_EE -> 0x00C0_FFEE, same value. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X6y3drwKSE2zSgoexheLFX
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14 files, +1983/−77. Mostly board, one new probe, and two doc-only corrections to existing crates.
The corrections, which are the point
256:256is exactly 64k, no remainder — and the rail is an ADDRESS, not a unit of the mask.d80b802first counted the skip in the wrong unit;57e8202corrects that reading rather than editing it away. A 64k table's mask is 1 024 words or 256 blocks of 256 rows, no remainder in either unit, and which unit an executor skips in is its own choice — the result is identical. Theu8:u8rail is not a mask unit at all: it is the exact row address of a 64k table, 256 × 256 = every row and nothing else. Both land as doc comments onlance-graph-mask-risc/src/ir.rsandlance-graph-quack/src/lib.rs; no API changes (the quack diff is comments plus one test-message string).The radius is stepless (
d04fa2a) — the operator's V3 masking variant, measured inadaptive_order_probe.rs.D-HXP-8 arm 1 — a probe that reports its own degeneracy
crates/perturbation-sim/examples/tictactoe_raumgewinn.rs(new, 616 lines) tests the Raumgewinn claim on tic-tac-toe and answers F0 DEGENERATE, not KILL. The board's rails reach every cell (reach 8..=8 of 8, 9/9 cells exhausted), so the stack is a census rather than a search and the F1 agreement number is unreadable — tie-aware agreement0.5797is exactly the baseline, and full-stack distinct is1.000. The F0 gate is what makes that legible: without it the run would have reported an F1 number that looks like a measurement and is not one. Gobang/Go/Hex are the non-degenerate arms.Board
EPIPHANIES+708,LATEST_STATE+202,PR_ARC_INVENTORY+89, plusSTATUS_BOARD,ISSUES,TECH_DEBT— including the popcount findings (popcount × selfis the k=0 Hamming ball, i.e. the exact prefix; and that popcount is position-blind, soelephant : Walcollide andlzcntis the tree's real metric).Gates
All four bespoke workflows run clean locally against
origin/main:no new citation decay since basePlus
cargo test -p lance-graph-quack -p lance-graph-mask-risc— 62 passed, 0 failed.Branch is current with
main(no rebase needed), andlance-graph-java#78 builds green againstlance-graph@origin/mainas it stands, so these two carry no merge-order dependency in either direction.Generated by Claude Code
Summary by CodeRabbit
New Features
Documentation