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docs(render): R-A2b shipped + flap residual (sec 4) + texture red-herring handoff

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R-A2b (485e44d) killed the 0171<->0173 churn (maxPop 16->1, measured). Visible flap residual is sec 4 (edge-on openings render-side + corner camera-seal). Camera-damping tried+failed+reverted. The white-walls scare was a RED HERRING: heavy per-frame probes (ACDREAM_PROBE_FLAP) starve the thread-unsafe dat-reader so texture-decode loses the race -> white; a clean launch (no probes) fixes it. The dat-reader thread-safety bug is the real underlying issue (filed). Repo clean at HEAD.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Erik 2026-06-09 18:44:33 +02:00
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docs/superpowers/plans/2026-06-09-portal-flood-r-a2b-side-cull.md
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@ -12,6 +12,14 @@
**Build-while-running gotcha:** the running client locks the DLLs (MSB3027). Always close the client (graceful `CloseMainWindow`) before `dotnet build`.
**PINNED (Phase 1 Task 2, 2026-06-09 capture `flap-sidechk.log`): B1 — the `eyeInsideOpening` bypass.**
Every back portal (`0173→0171` at `D=-1.51…-1.70`; `0172→0173` at `D=1.71`) shows `camInterior=False` (our
`CameraOnInteriorSide` already agrees with retail — it WANTS to cull) and is traversed **only when
`eyeIn=True`** (eye within 1.75 m of the shared doorway). At `D=-2.32` (farther, `eyeIn=False`) the same
back portal is correctly culled. So the cycle is the `&& !eyeInsideOpening` bypass. Forward portals
(`0171→0173`) show `camInterior=True` (unaffected; the clip-empty void rescue is preserved). **Fix = Branch
B1 (Task 4): drop `&& !eyeInsideOpening` from the side-cull.** B2 (side-test convention) is NOT needed.
---
## PHASE 1 — Pin the back-portal traversal mechanism (B1 vs B2)