Imps reinforce walls next to claimed ground (heroes avoid them, ~10x slower to break)

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

src/ui.rs

@@ -617,6 +617,10 @@ pub fn hover_info(g: &Game, ent: Option<usize>, tile: Option<(i32, i32)>) -> Vec
     };
     match t.kind {
         Kind::Rock => out.push((tr("tile.rock"), DIM)),
+        Kind::Earth if t.reinforced => {
+            out.push((tr("tile.reinforced"), FRAME_HI));
+            out.push((tr("tile.reinforced_info"), DIM));
+        }
         Kind::Earth => out.push((tr("tile.earth"), FRAME_HI)),
         Kind::Gold => {
             out.push((tr("tile.gold"), GOLD));