Raise walls: plan them on own floor, imps build reinforced earth

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

src/menu/bestiary.rs

@@ -10,7 +10,7 @@ pub const TABS: [&str; 4] = ["best.tab.creatures", "best.tab.humans", "best.tab.
 const CREATURES: [EK; 14] = [EK::Worker, EK::Kobold, EK::Spider, EK::Mage, EK::Ogre, EK::Jailer, EK::Priestess, EK::Chainbreaker, EK::Cogling, EK::Revenant, EK::Bat, EK::Gargoyle, EK::Owl, EK::Wyrm];
 const HUMANS: [EK; 8] = [EK::Knight, EK::Archer, EK::Priest, EK::Dwarf, EK::Fairy, EK::BattleMage, EK::Giant, EK::Paladin];
 // buildings: indices into ui::TOOLS
-const BUILDINGS: [usize; 31] = [2, 3, 4, 5, 6, 12, 40, 13, 18, 21, 41, 42, 43, 44, 17, 47, 19, 14, 15, 16, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31];
+const BUILDINGS: [usize; 32] = [2, 3, 4, 5, 6, 12, 40, 13, 18, 21, 41, 42, 43, 44, 17, 47, 49, 19, 14, 15, 16, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31];
 
 #[derive(Clone, Copy)]
 enum Entry {
@@ -267,6 +267,7 @@ impl Menu {
                     crate::ui::Tool::Tower(k) => crate::game::tower_name(k).trim_start_matches("tower.").to_string(),
                     crate::ui::Tool::Bridge => "bridge".into(),
                     crate::ui::Tool::Drawbridge => "drawbridge".into(),
+                    crate::ui::Tool::Wall => "wall".into(),
                     crate::ui::Tool::Trap(k) => k.id().into(),
                     _ => "steel".into(),
                 };