Expand destination preview snapshots

docs/PORTING.md

@@ -165,6 +165,9 @@ terrain-aware search for an alternate grounded location near an unsafe target.
 Version 0.2.5 uses dimension-appropriate preview skies for vanilla Nether and
 End destinations instead of their inherited Overworld biome sky tint.
 
+Version 0.2.6 expands destination snapshots to a 32-by-32-by-32 cube while
+keeping the existing target-centered Ponder camera position.
+
 The preview code is separated behind a renderer interface and uses an isolated
 Ponder level populated from server-authoritative destination snapshots.