Name Age save folders after player titles

README.md

@@ -46,6 +46,10 @@ available, the platform is generated at Y=63. Reopen the book and click its prev
 Copies of the written book continue to resolve to the same persistent Age
 across server restarts.
 
+New Age dimension folders use a Minecraft-safe lowercase form of the assigned
+name. Conflicts receive incrementing suffixes such as `_2` and `_3`; existing
+Age folders are never renamed.
+
 Linking creates a bound Return Link to the exact source position and orientation
 according to the configured Return Link policy.