Replicate the volcanism contrast out of sample: it does not hold - #404
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#403 read the frequency 0.5 arm as halving the #84 residual on the three known regions - 41 of 1248 against 21 of 1359, z = +2.9 - and ended with "raise n before slicing again". This is that, done the same day: eight fresh 256x256 regions, disjoint from all 23 Vulcanus cliff regions captured before and all more than 1000 tiles from the origin, at the default and the frequency 0.5 arm. Each was checked on the engine for cliffs in BOTH arms before capture. 16 runs, 2 seconds each. Out of sample the default arm is the better one and the gap is inside noise: default 124 of 4545 = 2.73%, frequency 0.5 138 of 4064 = 3.40%, z = -1.80. So "the residual moves with the field" was a small-n reading and is withdrawn. Volcanism is not a lever the residual responds to, and it cannot decide the elevation-side / placement-side question it was captured to decide. The sweep's rows stay frozen as counts; the comment that read them as a finding now says what replaced it. What survived is the spread between REGIONS at one setting. In the frequency 0.5 arm, [-2200,-1500] carries 74 of the arm's 138 errors - 24 wrong and 47 surplus of 795 cells, 9.3% - while [1800,3400] has 1 of 200. 47 surplus is the ore rule's signature, not the connection pass's. That concentration is a lead the diffuse in-sample numbers never offered, and it is frozen in the new test. Also in this change: the runner grew a mode argument (`sweep` / `oos`) and keeps the oracle's error so a failed run reports its cause rather than a missing dump (CodeRabbit's one finding on #403). The sweep fixture was regenerated to prove determinism - byte-identical data, only its _comment moved - and its provenance says so. No engine source changed; engine.wasm is byte-identical. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EadT1PyhSjDbjJwvLfo3zr
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Included review availability: Your plan provides up to 10 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe change adds configurable sweep and out-of-sample capture modes, records an eight-region volcanism comparison, updates fixture provenance, and revises the conclusion to state that the data does not support volcanism as a residual lever. ChangesVolcanism validation
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: ⚪ Minimal · up to This change adds out-of-sample volcanism capture data and refines the documented conclusion without changing engine behavior. The capture runner now rejects inherited mode names and retains underlying failures, with no current merge-blocking risk identified. Sequence Diagram(s)sequenceDiagram
participant CaptureCLI
participant Oracle
participant Fixture
participant RustTest
CaptureCLI->>Oracle: Capture configured regions with selected volcanism arms
Oracle-->>CaptureCLI: Return dumps or execution errors
CaptureCLI->>Fixture: Write out-of-sample fixture and provenance
RustTest->>Fixture: Load recorded comparison data
RustTest->>RustTest: Evaluate regional and pooled results
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✨ Finishing Touches📝 Generate docstrings
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Inline comments:
In `@docs/noise/vulcanus-cliffs-NOTES.md`:
- Line 4740: Replace the categorical volcanism conclusion in the surrounding
comparison note with evidence-limited wording: state that the out-of-sample
comparison does not support volcanism as a residual lever, without claiming
volcanism cannot affect the residual.
In `@scripts/probes/vulcanus-cliff-volcanism/capture.ts`:
- Line 288: Update the capture lookup around CAPTURES and the selected name to
accept only own properties, rejecting inherited names such as constructor and
toString before accessing capture.arms. Preserve the existing valid Capture
selection behavior.
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crates/fmw-noise/src/fixtures.rsdocs/noise/vulcanus-cliffs-NOTES.mdscripts/probes/vulcanus-cliff-volcanism/capture.tstest/fixtures/PROVENANCE.jsontest/fixtures/oracle-vulcanus-cliff-volcanism-oos.seed123456.jsontest/fixtures/oracle-vulcanus-cliff-volcanism-sweep.seed123456.json
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…y lookup z = -1.80 out of sample bounds a volcanism effect below what three regions could show; it does not rule one out. The notes, the Rust comment and the runner's doc now say "does not support", not "is not a lever". And the capture lookup accepts only own properties, so `constructor` or `toString` is rejected as an unknown capture rather than failing on `.arms`. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EadT1PyhSjDbjJwvLfo3zr
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…ult field (#405) * The concentrated region is the ore rule, under-removing at a non-default field #404's replication left one lead: [-2200,-1500] at frequency 0.5 carries 24 wrong and 47 surplus of 795 comparable cells. Surplus is a cell the port places and the game does not, and the only cliff-removing mechanism in this port's model is the ore rule. So: the same region, the same slider, with all four Vulcanus resource controls OFF on both sides - the lever oracle-vulcanus-cliff-ore-direction pulls. Two runs, 2 seconds each; the ON arm reproduces the oos capture cell for cell. resources ON, port with ore 768 / 24 / 47 / 3 74 errors resources ON, port without ore 767 / 27 / 84 / 1 112 errors resources OFF, port with ore 848 / 11 / 19 / 1 31 errors Sets, not counts, attribute it: the game's ore rule removed 65 cliffs in this region and the port's removed 39, and 28 of the port's 47 surplus cells are cells the game's ore rule removed. Switching the ore off on both sides takes the region from 74 errors to 31, and wrong from 24 to 11 - the destroy cascade, missed wherever the destroy is missed. The ore regions read vulcanus_mountains_resource_favorability and vulcanus_ashlands_resource_favorability (planet-vulcanus-map-gen.lua 768-814 at 2.1.17), which sit on the biome and elevation chain, so the game's ore IS expected to move with volcanism. What this shows is the port's ore field, or its removal roll, diverging from the game's at a field no ore fixture was captured at. Which of the two is the next capture: the game's ore ENTITIES in this region at frequency 0.5, against the port's ore field directly. The runner grew an `ore` mode that merges a resources-off override with the volcanism one and reads all four resource controls back off the surface, refusing an arm whose read-back disagrees. Test: the_concentrated_residual_against_the_ore_lever, which intersects the cell sets rather than counting. No engine source changed; engine.wasm is byte-identical. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EadT1PyhSjDbjJwvLfo3zr * Name the cell map: clippy's type_complexity on the new helper The local gate reported rc=101 on this and I opened the PR before reading the line. Lesson re-learned, same day it was written down elsewhere in this repo: grep the gate for its own failure markers, not for the phases that passed. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EadT1PyhSjDbjJwvLfo3zr --------- Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
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#403 ended with "raise n before slicing again". This is that, done the same day and before anything cited the sweep's number.
What was claimed
On the three known regions, the frequency 0.5 arm halved the #84 residual rate: 41 of 1248 against 21 of 1359, z = +2.9. #403 and #84 comment #138 read that as "the residual moves with the field".
What replication says
Eight fresh 256x256 regions, disjoint from all 23 Vulcanus cliff regions captured before and all more than 1000 tiles from the origin, at the same two arms. Each region was checked on the engine for cliff pixels in both arms before capture (the table is in
capture.ts). Sixteen runs, 2 seconds each.The default arm is the better one out of sample and the gap is inside noise. The claim is withdrawn. Volcanism is not a lever the residual responds to, and it cannot decide the elevation-side or placement-side question it was captured for. The sweep's rows stay frozen as counts; the comment on them now records the refutation instead of the finding.
What survived
The spread between regions at one setting. In the frequency 0.5 arm,
[-2200,-1500]carries 74 of the arm's 138 errors: 24 wrong and 47 surplus of 795 comparable cells, 9.3%.[1800,3400]in the same arm has 1 of 200. Forty-seven surplus cells, ones the port places and the game does not, is the ore rule's signature from the earlier #84 work rather than the connection pass's. The new test freezes that region so the lead cannot drift.Also here
sweeporoos, and keeps the oracle's error so a failed run reports its cause rather than a missing dump. That is CodeRabbit's one finding on Sweep Vulcanus cliffs over the volcanism control: the residual moves with the field #403, taken here._commentmoved because the text is now composed per mode. Its provenance line says so.engine.wasmis byte-identical.Full record: the last two sections of
docs/noise/vulcanus-cliffs-NOTES.md.🤖 Generated with Claude Code
https://claude.ai/code/session_01EadT1PyhSjDbjJwvLfo3zr
Summary by CodeRabbit
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