feat(render) Campaign FW3.3: ShellDrawLiftZ is RETIRED - cells draw at the dat origin

Retail draws cell geometry at the dat EnvCell origin verbatim; the
0.02 m lift was our z-fight stand-in (register row AP-32, deleted in
this commit). With the walk owning retail draw ORDER under
WorldDepthContract Less (first-drawn-wins: DrawBlock terrain-then-
objects per cell, DrawCells shells-then-contents), the coplanar
tie-breaks the lift compensated for are now resolved the way retail
resolves them.

Deleted at every site: the PortalVisibilityBuilder const + the
drawLiftZ Build parameter and its lifted exit-portal projection branch
(gate and drawn geometry now share ONE space); the seal/punch fan
lifts (DrawPortalDepthWrite + the walk's DrawWalkPunchFan); the
LandblockBuildFactory drawn-cell-transform lift (render and physics
share the one verbatim transform).

The #130 proof flipped exactly as its own doc predicted:
UnliftedGate_LeavesTheStripAtTheDrawnTopEdge is deleted (its premise -
gate space != drawn space - no longer exists), and the renamed
ExitDoorTopEdge_GateCoversTheDrawnApertureWithinPixelTolerance sweep
(147 eye/gaze combos at the Holtburg corner door) passes with both in
the same unlifted space (worst plane gap <= 1.2 px, scissor <= 0.15 px
- unchanged tolerances). Ten more replay-test call sites swept to the
new Build signature.

Suites: full Release build 0 warnings; hermetic 6,750/0; the 21
affected InstalledDat replay tests green; Walk conformance 40/1
untouched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/architecture/retail-divergence-register.md

@@ -325,7 +325,6 @@ research and is no longer active.
 | AP-27 | PlayerDescription trailer: GameplayOptions skipped by a 4-byte-aligned heuristic scan for a valid inventory parse; options blob captured opaque, never decoded (retail decodes + applies UI options) | `src/AcDream.Core.Net/Messages/PlayerDescriptionParser.cs:69` | Variable-length opaque blobs; mirrors holtburger's heuristics; follow-up issue extends when panels consume those sections | An options blob that coincidentally parses as a valid inventory (or inventory not landing at EOF) yields wrong/empty inventory+equipped at login; retail-persisted UI options silently ignored | ACE GameEventPlayerDescription.WriteEventBody; holtburger events.rs:195-218 |
 | ~~AP-28~~ | **RETIRED 2026-08-08 (Campaign A slice A2).** The three picked AL parameters and the gain-driven eviction are both gone. `RetailSoundMixer` now carries the byte-decoded retail curve — `g = dist < 5 ? vol : 25·vol/dist²`, clamped to 1, ONE master multiply, `db = ceil(20·log10 g)`, and a hard −50 dB no-allocate floor (audible radius ≈94.2 m at unity) — with pan as retail's `−15·sin(Δbearing)` in whole decibels and a 5-metre integer deadzone. Every AL source is source-relative with `AL_ROLLOFF_FACTOR = 0` and the global distance model is `None`, so AL contributes no attenuation of its own; the old `InverseDistanceClamped` ref-2 m curve was inverse FIRST power (`2/d`), quieter than retail up close and far louder at range with no cutoff at all. Voice eviction now compares the DAT-authored float priority strictly-less in ring order per `SoundManager::PlaySoundInternal` @ `0x0054FEC0` (the row's old `FUN_00550ad0` citation was wrong — that address is inside an `IntrusiveHashTable` constructor). The residual pan-LAW approximation is AP-173; retail's own `s_bPlaySoundOnlyWhenActive` gate is TS-64. | retired | — | — | `SoundManager::GetAttenuation @ 0x00550020`; `SoundManager::PlaySoundInternal @ 0x00550170` and `@ 0x0054FEC0`; `docs/research/2026-08-08-audio-retail-soundmanager-core.md` |
 | AP-31 | Scenery placement drift + the 0xA9B1 road-edge tree — WB-upstream divergences from retail, ACCEPTED (**#49/#50**, 2026-05-11) | `src/AcDream.Core/World/SceneryGenerator.cs` (via `WbSceneryAdapter`) | Piecemeal patching against WB upstream is net-negative (the `e279c46` road-check attempt over-suppressed scenery elsewhere, reverted `677a726`); visible impact = a handful of trees a few meters off | The same WB-upstream class could hide a *larger* placement divergence elsewhere; revisit only via a coherent ACME-style per-vertex filter port | `CLandBlock::get_land_scenes`; ACME GameScene.cs:1074 per-vertex road filter |
-| AP-32 | Cell shells DRAW +0.02 m above the dat EnvCell origin (`ShellDrawLiftZ`, z-fight vs coplanar terrain); retail draws at the origin verbatim. Split invariant: PHYSICS + visibility graph UNLIFTED (f35cb8b, **#119**-residual), every DRAW-space consumer of portal/cell geometry LIFTED (OutsideView color gate via `Build(drawLiftZ)`, seal/punch fans — **#130**) | `src/AcDream.App/Rendering/PortalVisibilityBuilder.cs` (`ShellDrawLiftZ`); `src/AcDream.App/Rendering/RetailPViewPassExecutor.cs` (`DrawPortalDepthWrite`) | Shell floors coplanar with terrain z-fight in our z-buffered frame; the 2 cm lift is the documented stand-in | A new draw-space consumer of portal/cell polygons that forgets the lift re-opens a 2 cm seam at horizontal aperture edges (the #130 top-edge strip, ~7 px at 2.4 m); a visibility consumer that picks up the LIFTED transform re-opens the #119-residual horizontal-portal side-cull | retail draws cell geometry at the dat EnvCell origin (no lift) |
 | AP-33 | Interior-root look-in cells (**#124** sub-pass) draw their statics + DYNAMICS + emitters WHOLE — no per-part/per-object viewcone check; retail viewconeCheck's each vs the installed view (the **#131** portal closure: a server object in a look-in cell drew nowhere — dynamics-last culls cells absent from the main cone, and post-seal it z-fails anyway) | `src/AcDream.App/Rendering/RetailPViewRenderer.cs` (`DrawBuildingLookIns`) | The main viewcone has no entries for look-in cells; over-include is the safe direction (z-correct, repainted outside apertures by the root's shells); look-in cell counts are small (~1-3 cells) | A few wasted draws on content outside the doorway region (repainted); no under-draw direction remains | `viewconeCheck` 0x0054c250; nested `DrawCells` objects pc:432878 |
 | AP-34 | The world now shares one delayed alpha queue across Wb GfxObj/Setup entities and scene particles and drains it at retail's landscape/final boundaries. Residual: the modern reconstruction uses one stable scope-global CYpt sort rather than retail's per-`CPartCell` `CShadowPart` sort followed by cell traversal; `EnvCellRenderer` transparent shell batches also remain immediate and outside this queue | `src/AcDream.App/Rendering/RetailAlphaQueue.cs`; `RetailPViewPassExecutor.cs` (`FlushLandscapeAlpha`); `Rendering/Wb/WbDrawDispatcher.cs`; `ParticleRenderer.cs` | The mandatory modern renderer no longer owns retail `CPartCell` shadow lists. The shared queue restores the material consequence that motivated the port—particles and ordinary translucent parts can interleave—without rebuilding a second scene graph; stable sequence retains authored order on equal CYpt | Transparent objects from different cells can exchange order at a narrow overlap compared with retail cell traversal; an alpha-blended EnvCell shell cannot interleave with a particle or Wb entity, so those rare overlaps can still overpaint differently | `RenderDeviceD3D::DrawObjCellForDummies` 0x005A0760; `CShadowPart::insertion_sort` 0x006B5130; `D3DPolyRender::FlushAlphaList` 0x0059D2E0; `PView::DrawCells` 0x005A4840 |
 | AP-36 | Dungeon streaming gate triggers on the player's CURRENT cell being a sealed EnvCell (`CurrCell.IsEnv && !SeenOutside`), an approximation of ACE's full landblock `IsDungeon` (all-heights-zero + NumCells>0 + Buildings.Count==0). The retail BEHAVIOR (a dungeon loads no adjacent landblocks) is faithful — only the runtime TRIGGER is the cheap cell predicate instead of classifying the center landblock. **#135 pre-collapse:** at login/teleport the same collapse is triggered EARLY (the instant the streaming center is recentered onto the spawn/dest cell) via `IsSealedDungeonCell` reading the EnvCell **dat** `SeenOutside` flag — because the physics `CurrCell` is null until placement, which waits for hydration; without the early trigger the full 25×25 ocean-grid window loads then unloads (the ~30 s login FPS ramp). **#215 cell identity:** the pre-collapse/recenter decision compares the player's current `Position.objcell_id` landblock with the received destination `objcell_id`; it never reconstructs the source from XYZ because dungeon frame origins may be negative. **#145/#138 teleport-hold suppression:** during a teleport arrival HOLD the player is unplaced, so `CurrCell` is the frozen SOURCE cell, not the destination; the gate is suppressed for the hold (`DungeonStreamingGate.Compute(isTeleportHold:true)` → not-inside-dungeon) so a teleport OUT of a dungeon follows the destination (the PortalSpace observer pin) and `ExitDungeonExpand`s, instead of re-pinning streaming onto the source dungeon (which left the outdoor destination un-hydrated → 600-frame readiness timeout → force-snap to ocean — the #145 "second teleport does nothing" + #138 incomplete-world) | `src/AcDream.App/Streaming/TeleportLandblockTransition.cs` (source/destination cell-ID classification) + `src/AcDream.App/Streaming/DungeonStreamingGate.cs` (`Compute` — per-frame predicate + teleport-hold suppression) + `src/AcDream.App/World/LiveEntityHydrationPorts.cs` (`LiveEntityWorldOriginCoordinator.TryInitialize` — login pre-collapse) + `src/AcDream.App/Physics/LiveEntityNetworkUpdateController.cs` (`OnPosition` — first accepted canonical Position) + `GameWindow:AimTeleportDestination`/`IsSealedDungeonCell` (teleport pre-collapse and DAT predicate) + `src/AcDream.App/Streaming/StreamingController.cs` (collapse/expand/`PreCollapseToDungeon`) | The predicate is already computed for sun/sky gating (playerInsideCell) and exactly matches for sealed dungeons vs windowed building interiors (SeenOutside=true → not gated); no landblock re-classification needed. The dat-flag read is the same `EnvCellFlags.SeenOutside` the hydrated `ObjCell.SeenOutside` is built from (`EnvCell.cs:72`/`PhysicsDataCache.cs:224`), so the pre-collapse decision matches the eventual per-frame gate exactly. The cell-ID comparison matches retail's complete `Position` flow. | A dungeon cell that reports SeenOutside (an entrance cell open to the surface) briefly un-collapses and re-streams the window; a hypothetical windowless building back-room (IsEnv && !SeenOutside but HasBuildings) would wrongly collapse its outdoor neighbors; a sealed-dungeon entrance cell that is itself SeenOutside is simply MISSED by the early trigger and falls back to the existing late collapse (no worse than before #135) | ACE `LandblockManager.GetAdjacentIDs` (dungeons→empty) Landblock.cs:577-582; `IsDungeon` Landblock.cs:1264-1277; retail `SmartBox::TeleportPlayer` 0x00453910 |