Port celestial systems and seeded Age completion to 26.3 beta

README.md

@@ -15,11 +15,12 @@ incomplete **Minecraft 26.3 beta** is available: Java 25, NeoForge 26.3.0.99,
 and a first-party Age backend (no Dynamic Dimensions or Bad Packets). It now
 supports authored terrain/biomes, structure and vegetation pages, independent
 Age weather/lighting, seeded and colorable Overworld/Nether/End/Static skies,
-Normal Time length/phase/direction/bearing and sun-size controls,
-and a growing set of generation features,
-but does not yet provide full 1.21.1 gameplay or optional-integration parity.
+independent Sun/Moon controls, multiple bodies and eclipses, seeded biome and
+feature completion, and random structure selection. Nether/End noise-biome
+materials now follow their native rules. The beta does not yet provide full
+1.21.1 gameplay or optional-integration parity.
 See the [26.3 beta guide](ports/mc263/README.md) and
-[latest beta release notes](ports/mc263/RELEASE_NOTES_1.0.1.78-beta.1.md).
+[latest beta release notes](ports/mc263/RELEASE_NOTES_1.0.1.93-beta.1.md).
 Keep the builds and their saves separate, and back up worlds before updating.
 
 ## Getting started