fix #131 (root cause): look-in cells draw their emitters - the cell-particles pass was missing from the #124 sub-pass

The teleport capture pinned it: walking into the portal flipped pCell to 0xA9B4017A - the hall's PORCH EnvCell. The swirl emitter is owned by a static inside another building's cell. Outdoors the merge path runs the main per-cell pass incl. DrawCellParticles -> visible; under an interior root the #124 look-in sub-pass drew shells + statics but had no cell-particles call. Retail's nested DrawCells draws objects WITH their emitters (DrawObjCellForDummies pc:432878+). Fix: DrawBuildingLookIns pass 2 invokes DrawCellParticles per look-in cell with its static bucket. The owner-cone verdicts were geometrically correct all along (0xC0A9B462 = a porch torch); fixes 1-2 were real-but-adjacent (the unattached pass plugs an independent hole; the alpha deferral fixed #132).

Suites: App 260+1skip / Core 1439+2skip / UI 420 / Net 294 green. Awaiting the swirl gate.

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

docs/ISSUES.md

@@ -4635,15 +4635,27 @@ the landscape stage is now TWO phases per frame — EARLY per slice: sky,
 terrain, outdoor static meshes (the look-in punches need their depth, the
 #117 lesson); then the #124 look-ins; then LATE per slice: outside-stage
 dynamics' meshes + ALL attached scene particles + weather + the
-unattached pass. Outdoor roots keep their existing order (no look-ins in
+unattached pass. (This FIXED #132 indoors but not the portal.)
-the stage; net order unchanged). Residual (documented, AP-34): under
+
-OUTDOOR roots slice particles still draw before merged building
+**ROOT CAUSE (fix 3 — the real one, pinned by the teleport capture):**
-interiors (the outdoor sibling of this bug, unreported); building
+walking into the portal flipped `pCell` to **0xA9B4017A — the hall's
-exteriors' own translucent batches draw early.
+porch EnvCell**. The portal's swirl emitter is owned by a STATIC inside
+ANOTHER BUILDING'S CELL, not an outdoor entity at all. Outdoors the
+hall's cells merge into the main frame and the per-cell object pass
+runs `DrawCellParticles` → swirl visible. Under an interior root the
+#124 look-in sub-pass drew the far cells' shells + statics but had NO
+cell-particles call — retail's nested DrawCells draws objects WITH
+their emitters (`DrawObjCellForDummies`). Every earlier suspect
+(unattached pass, owner-cone verdicts, alpha ordering) was real-but-
+adjacent; the cone math was correct all along (the 0xC0A9B462 flips
+were a porch torch, geometrically defensible).
+
+**Fix 3:** `DrawBuildingLookIns` pass 2 invokes `DrawCellParticles` per
+look-in cell with its static bucket (same callback as the main per-cell
+pass; no-clip slice when the cell has no slot).
 
 **Gate:** stand inside, look out the doorway at the town portal — the
-swirl renders through the door; the candle flame (#132) stays visible
+swirl renders through the door.
-with the through-opening behind it.
 
 ---
 

src/AcDream.App/Rendering/RetailPViewRenderer.cs

@@ -308,7 +308,10 @@ public sealed class RetailPViewRenderer
     // repainted by the root's own shells after the depth clear, so over-draw
     // here is color-safe; statics draw whole (the main viewcone has no entry
     // for look-in cells; over-include is the safe direction).
-    private void DrawBuildingLookIns(RetailPViewDrawContext ctx, InteriorEntityPartition.Result partition)
+    private void DrawBuildingLookIns(
+        RetailPViewDrawContext ctx,
+        ClipFrameAssembly clipAssembly,
+        InteriorEntityPartition.Result partition)
     {
         if (_lookInFrames.Count == 0)
             return;
@@ -355,6 +358,17 @@ public sealed class RetailPViewRenderer
                     _cellStaticScratch.Clear();
                     _cellStaticScratch.AddRange(bucket);
                     DrawEntityBucket(ctx, _cellStaticScratch, _oneCell);
+
+                    // #131: the cell-particles pass for look-in cells — retail's
+                    // nested DrawCells draws objects WITH their emitters
+                    // (DrawObjCellForDummies, pc:432878+). Without this, an
+                    // emitter owned by a far building's cell static (the
+                    // Holtburg hall-porch portal swirl, cell 0x017A) drew ONLY
+                    // when the viewer was outdoors (the merge path runs the
+                    // main per-cell pass) — invisible from inside any cottage.
+                    foreach (var slice in GetCellSlicesOrNoClip(clipAssembly, cellId))
+                        ctx.DrawCellParticles?.Invoke(new RetailPViewCellSliceContext(
+                            cellId, slice, _cellStaticScratch));
                 }
             }
         }
@@ -410,7 +424,7 @@ public sealed class RetailPViewRenderer
         // stage (their punches mark against the terrain/exterior depth just
         // drawn), strictly BEFORE the depth clear + seals below, matching
         // retail's LScape::draw placement (DrawCells pc:432719 vs 432732/432785).
-        DrawBuildingLookIns(ctx, partition);
+        DrawBuildingLookIns(ctx, clipAssembly, partition);
 
         // LATE phase (per slice): outside-stage dynamics' meshes (#118 — drawn
         // pre-clear so the seal protects their aperture pixels; AFTER the
@@ -429,8 +443,20 @@ public sealed class RetailPViewRenderer
             foreach (var e in partition.OutdoorStatic)
             {
                 EntitySphere(e, out var c, out float r);
-                if (viewcone.SphereVisibleInOutsideSlice(probeSliceIndex, c, r))
+                bool ownerPass = viewcone.SphereVisibleInOutsideSlice(probeSliceIndex, c, r);
+                if (ownerPass)
                     _lateParticleOwnerScratch.Add(e);
+                // #131 owner watchlist (throwaway): ACDREAM_DUMP_ENTITY ids
+                // double as an ENTITY-id watchlist here — one line per watched
+                // outdoor-static owner per CHANGE of its cone verdict.
+                if (AcDream.Core.Rendering.RenderingDiagnostics.ProbeOutStageEnabled
+                    && AcDream.Core.Rendering.RenderingDiagnostics.DumpEntitySourceIds.Contains(e.Id)
+                    && (!_outStageOwnerVerdicts.TryGetValue(e.Id, out bool prev) || prev != ownerPass))
+                {
+                    _outStageOwnerVerdicts[e.Id] = ownerPass;
+                    Console.WriteLine(System.FormattableString.Invariant(
+                        $"[outstage-own] id=0x{e.Id:X8} src=0x{e.SourceGfxObjOrSetupId:X8} pos=({e.Position.X:F1},{e.Position.Y:F1},{e.Position.Z:F1}) c=({c.X:F1},{c.Y:F1},{c.Z:F1}) r={r:F1} slice={probeSliceIndex} {(ownerPass ? "PASS" : "CULL")}"));
+                }
             }
             foreach (var e in _outsideStageDynamics)
             {
@@ -475,6 +501,7 @@ public sealed class RetailPViewRenderer
     // which outdoor dynamics were routed to the outside stage and which
     // survived the slice viewcone. Strip with the probe when #131 closes.
     private string? _lastOutStageSig;
+    private readonly Dictionary<uint, bool> _outStageOwnerVerdicts = new();
 
     private void EmitOutStageProbe(int sliceIndex, ViewconeCuller viewcone)
     {