Fr0zkaandClaude Opus 5.5
5bd158d4eb
Each passage records upper and lower landing chambers (floor, gradient, radius, 4.5 m clear height) composed with the tunnel shell; cave route endpoints bind to the chambers; envelope audit permits only the named chamber joints. Seed 2: 0 solid in 319,579 passage+chamber capsule samples, 0 shell violations, 0 envelope conflicts, controls fire. Open: tunnel-to-chamber floor blend leaves 19.1/19.0 deg grades (limit 15); sweeps/timing not run. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
40 lines
5.1 KiB
Markdown
40 lines
5.1 KiB
Markdown
# L151 — One tunnel for two strata
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| Landing chamber | Before (L150) | After (L151) |
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|---|---|---|
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| passage/0-1/0 · upper |  |  |
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| passage/0-1/0 · lower |  |  |
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| passage/1-2/0 · upper |  |  |
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| passage/1-2/0 · lower |  |  |
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| passage/2-3/0 · upper |  |  |
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| passage/2-3/0 · lower |  |  |
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Seed 0 camera poses are matched at eye height. All 12 images passed the capture quality check. The L150 build stamp is `c6b8a100355e271ddc40eb5973569d2ff4e2ba8d9c628c72f8e0af2493f0609f`; L151 is `1ca3b84f6d35f7f355ec0f72dabd3b87a455ea02e5789fea611916962e5db8e5`. The [capture index](captures/INDEX.md) and [manifest](captures/manifest.json) record the poses and files.
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## Result
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**L151 is not promotion-ready.** The resolved layout now records one passage spline with an upper and lower landing chamber, and the evaluator version is 238. The best tested floor blend still leaves two walk segments above the 15° limit: 19.077° on passage 0-1 and 19.033° on passage 2-3. The three-variant stop rule was reached; I stopped without a fourth geometry attempt. No owner baselines were promoted.
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## What changed
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- Added serialized and validated landing chamber records with floor center, floor gradient, radius, and 4.5 m clear height. The shared passage field composes each chamber with the tunnel shell and floor.
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- Cave route endpoints now bind to the passage's landing chamber anchors. The passage floor blends to chamber floors over the tested 12 m transition.
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- Extended passage audits for chamber capsule clearance, floor and wall shell, and blocked-world negative controls. Added a geometric cave-primitive envelope audit that permits the named chamber joints and refines conservative edge-box candidates against the swept bore.
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- Retained the L135 mouth profile, L147 interior-air gate, and L148 envelope allowance.
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## Measurements and checks
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- **Focused owner-world run:** one seed-2 W8 run, source stamp above. Three interfaces were audited. Passage and chamber interiors together had 0 solid samples across 319,579 capsule samples; all six chambers had 0 solid samples. Passage floor, wall, and interior shell violations were all zero. Naturalness, mouth profile, ripple, and all three layer route audits passed. Tunnel-network, vertical-shaft, and blocked-passage negative controls were detected (1/1, 1/1, and 3/3). The combined passage summary failed because only one of three interfaces met walkability.
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- **Chamber envelope audit:** 549 primitives checked; 2 conservative bounds candidates were refined as false positives; 0 conflicts remained outside chambers; 3 named chamber joints and the negative control passed (1/1). Result: [JSON](../../../../Saved/Linux/l151/passage-envelope-audit.json).
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- **Blend attempts:** 12 m retained two grades at 19.077° and 19.033°. Extending the blend to 24 m produced 436 solid interior capsule samples and one wall violation, as well as grades of 15.282° and 17.406° on passage 0-1. Restricting the external blend to 0 m kept interior and shell checks clear but left a 22.226° grade on passage 0-1. The 12 m variant is the final source state.
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- **Build and snapshots:** Clang 19 build passed for stamp `1ca3b84f…`; the explicit seed-0 resolved-layout snapshot round trip passed. Python capture and envelope audit scripts ran successfully. `git diff --check` passed for the tracked diff; the report's whitespace and image references were checked separately.
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- **Seams:** the saved seed-2 log has no `[PassageTileSeamAudit]` result, so seam status is unverified.
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## Not run
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The three-failure stop was reached before the fast tier, the 16-seed Tunnel Network and Vertical Shafts sweeps, Clang/GCC W1/W8/W12, and L80 timing for all four layers. No timing claim is made. No owner-world baseline files were updated because the composed walkability gate failed. The only modified `Source/` file is `Standalone/Source/StreamBenchmarkPipeline.h`; no Unreal `Source/` files changed.
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## Remaining risk
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The tunnel-to-chamber floor transition still creates local grades above 15° in two interfaces. The envelope audit and geometry evidence cover seed 2 only; multi-seed composed behavior, seams, compiler/worker determinism, the fast tier, and L80 performance remain unverified.
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