Fr0zkaandClaude Opus 5.5
e5a60da2c3
Three planner variants (per-pad clamp ranges, route rewrites, edge-ring feasibility) failed strict validation or found no feasible lower pad on the FI fast fixture; the clamp stamp itself was never evaluated. Source restored. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
38 lines
3.9 KiB
Markdown
38 lines
3.9 KiB
Markdown
# L158 — Flat landing pad
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| Tunnel end | Before (L151) | After (L158) | Wide pad view (L158) |
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|---|---|---|---|
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| passage/0-1/0 · upper |  | Not captured: seed 0 stops during pad planning. | Not captured. |
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| passage/0-1/0 · lower |  | Not captured: seed 0 stops during pad planning. | Not captured. |
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| passage/1-2/0 · upper |  | Not captured: seed 0 stops during pad planning. | Not captured. |
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| passage/1-2/0 · lower |  | Not captured: seed 0 stops during pad planning. | Not captured. |
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| passage/2-3/0 · upper |  | Not captured: seed 0 stops during pad planning. | Not captured. |
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| passage/2-3/0 · lower |  | Not captured: seed 0 stops during pad planning. | Not captured. |
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## Result
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**L158 is stopped and not shipped.** Three planner attempts failed the seed-0 fast fixture. The last one could not find a lower pad floor satisfying both its edge-ring interval and the route transition. The pad stamp never reached composed-field evaluation, so this is not evidence that the clamp formula itself fails. It does meet the requested stop condition; I did not continue tuning it.
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The attempted v240 source edits were restored to `wip/l134-cave-planner` HEAD. No baselines were changed. The pre-existing untracked `Linux18/exports/` directory was left untouched.
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## What failed
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- Attempt 1 clamped both route ends without limiting each clamp to its own `R+B`; strict validation found an upper mouth binding error and route grades above 15°.
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- Attempt 2 limited route rewrites to each pad’s `R+B`; strict validation still found route grades above 15° at the transition.
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- Attempt 3 linearly rewrote the route profile between the flat-disc boundary and an outside route point, and checked that point during site fitting. The fast fixture then failed before snapshot creation: `lower landing pad has no feasible floor on its edge ring or next route site`.
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These attempts and the final failed log are under `Saved/Linux/l158/fast/`. The final run used source stamp `447f2cb268a0b3a06c1994f6c58914f698e9ea66d686bd16e78f20ec72233c81`.
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## Checks and measurements
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- Clang 19 candidate build passed with `--fp-contract=off --jobs=4`, CPUs 0–11, and the 6 GiB address-space limit.
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- Fast tier failed at `owner-floating-islands-style2-clang` with exit code 2. The [log](../../../../Saved/Linux/l158/fast/owner-floating-islands-style2-clang.log) records the lower-pad planning failure; the [tier summary](../../../../Saved/Linux/l158/fast/fast-summary.json) records the failed gate.
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- `git diff --check` passed after restoring the candidate source. The worktree has no tracked source changes.
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- No performance timings were taken, so there is no timing window or L80 result to report.
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The 16-seed Tunnel Network and Vertical Shafts sweeps, `LandingPadAudit` and its four controls, interior-air/shell/seam/route/envelope gates, Clang/GCC W1/W8/W12, L80 for all four layers, UE start and 30 m/s run, and L158 captures were not run. No evaluator-version bump or baselines were retained. No Unreal `Source/` files changed.
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## Remaining risk
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The requested planner constraints remain unresolved. In particular, the last check coupled the pad edge-ring floor to an outside passage-route height and had no feasible lower site on the fast fixture. Since planning stopped before field composition, the clamp’s actual terrain blend, bore mask, bounds, and seed-sweep behavior remain unmeasured.
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