config cleanup

tiles.toml

@@ -1,5 +1,5 @@
 # Floor tiles: IDs are used for texture lookup.
-# Weight: lower = faster to traverse (rock=50 is best, bedrock=150 is worst).
+# Weight: higher = slower to traverse (rock=50 is fastest, bedrock=150 is slowest).
 # Stand flags: can_stand_in (air pocket), can_stand_on (solid surface), transparent (see-through).
 
 [floor_tiles.air]
@@ -35,7 +35,7 @@ id = 4
 can_stand_in = false
 can_stand_on = true
 transparent = false
-astar_weight = 50
+astar_weight = 150
 
 # Fixture tiles: walls and objects above floors.
 # IDs are relative to FIXTURE_ID_OFFSET (500000).