Apply Age celestial angles

docs/PORTING.md

@@ -355,6 +355,11 @@ Age's selected terrain profile. End biome columns generate from End stone;
 Nether biome columns use Minecraft's Nether surface rules for netherrack,
 soul sand, basalt, and nylium instead of inheriting Overworld blocks.
 
+Version 0.2.26.0 applies each Age's persisted celestial angle to the client
+sky. The sun, moon, and stars follow a plane rotated by the saved Legacy-style
+angle in normal gameplay and Immersive Portals previews, while vanilla
+dimensions retain their standard celestial path.
+
 Version 0.2.14.0 restores the legacy Linking and Descriptive Book artwork for
 inventory items and gives each book its matching open-book texture when placed
 on a Book Stand. Return Linking Books created inside another Age also retain and