fix: complete retail parity stability pass

src/AcDream.UI.Abstractions/Panels/Settings/DisplaySettings.cs

@@ -180,10 +180,9 @@ public sealed record DisplaySettings(
     int LandscapeTextureDetail = 2,
     int EnvironmentTextureDetail = 1,
     int TextureFiltering = 1,
-    // UNRESOLVED (OP6, cite in register row): retail's own
-    // SetDefaultValue(8) does not index its 6-entry SetEnumChoices array
-    // (VeryLow..Extreme) — reproduced faithfully as an opaque int, not
-    // guessed into a clamped index.
+    // Retail stores the VALUE, not the caption index. Its six enum payloads
+    // are {3,5,8,11,15,25}; SetDefaultValue(8) therefore selects Medium.
+    // #361 corrected the former index-shaped Config binding.
     int LandscapeDrawDistance = 8,
     bool BuildingDetailTextures = true,
     bool MultiPassAlpha = false)