feat(render) Campaign FW1: port the exact retail degrade selection

UpdateViewerDistance @0x0050e030 + get_degrade @0x0051e4b0 ported with
live-pinned globals: distance measured to the part SCALED SORT CENTER,
effective = max(0, dist - s_rDegradeDistance [live 100]), level = first
with effective < IdealDist (the live auto_update_deg_mul<=0 arm), else
the last level. WalkBuildingDegradeLevel carries the full authored
bands; the adapter fills sort centers; the replay context measures to
the transformed sort center. Sweep state after the rule: the level-0
building set is now correct; the residual divergence is the per-portal
side/clip gate (my arms punch a near-complement of retail two) - the
sweep driver carries the next instrument in its Skip note.

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

tests/AcDream.App.Tests/Rendering/Walk/WalkLookInGateSweepTests.cs

@@ -24,12 +24,14 @@ public sealed class WalkLookInGateSweepTests
         public void Emit(in WalkEvent walkEvent) => Events.Add(walkEvent);
     }
 
-    [Fact(Skip = "FW1 adjudication driver (2026-08-30 state): the degrade-level "
-        + "BSP gate killed every wrong punch — remaining deltas are the near "
-        + "buildings 001a/0022 (50/28 m center distance vs the 48 m level-0 "
-        + "band: port UpdateViewerDistance's sphere-adjusted distance + "
-        + "hysteresis) and the ring-1 frustum boundary pair "
-        + "(aab50002 extra / a9b3003c missing). Re-enable to re-adjudicate.")]
+    [Fact(Skip = "FW1 adjudication driver (2026-08-30 final state): with the "
+        + "exact get_degrade rule (slack 100, ideal thresholds, sort-center "
+        + "distance) the level-0 set is correct — the residual divergence is "
+        + "the per-portal side/clip gate: my arms punch {0017,001e,0026,0036}, "
+        + "retail punched exactly {001a,0022} — a near-complement suggesting "
+        + "one more polarity at the building-portal gate. Next instrument: "
+        + "per-portal dump for 001a (retail punches) vs 001e (retail doesn't): "
+        + "side values, plane orientation, eye side, clip result per arm.")]
     public void Sweep_the_lookin_gate_decodes_against_the_street_fixture()
     {
         string? datDir = CornerFloodReplayTests.ResolveDatDir();