Name Age save folders after player titles

docs/PORTING.md

@@ -210,6 +210,11 @@ Version 0.2.10.4 restores Mystcraft Legacy's standard linking sound for both
 Linking and Descriptive Books. Successful travel plays the sound at its source
 and destination with the legacy volume and pitch variation.
 
+Version 0.2.10.5 derives each new Age's saved dimension folder from its
+player-assigned name. Names are converted to safe lowercase resource paths,
+and folder conflicts receive `_2`, `_3`, and later numeric suffixes. Existing
+UUID-based dimension folders remain unchanged for save compatibility.
+
 The preview code is separated behind a renderer interface and uses an isolated
 Ponder level populated from server-authoritative destination snapshots.