Editor: blocks wrap their fields, wider fields, the demo den behind a tunnel

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lang/en.lang

@@ -1068,7 +1068,7 @@ ed.add_branch = + Branch
 ed.goal.killall = Defeat all heroes
 ed.goal.shards = Take the shards
 ed.goal.heart = Destroy the gate
-ed.goal.towers = Raze the knight towers
+ed.goal.towers = Raze knight towers
 ed.goal.rivals = Defeat the rivals
 ed.goal.loot = Loot gold
 ed.goal.survive = Survive waves