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/sfx.rs

@@ -146,6 +146,15 @@ fn def(s: Sfx, r: f32) -> Vec<f32> {
         Sfx::Defeat => l(&[seg(Square(0.5), 220.0, 110.0, 0.6, 0.22, 2.0)], 38),
         Sfx::Click => l(&[seg(Square(0.5), 1000.0, 1000.0, 0.02, 0.12, 50.0)], 39),
         Sfx::Error => l(&[seg(Square(0.5), 110.0, 105.0, 0.16, 0.2, 4.0)], 40),
+        Sfx::Reinforce => l(&[seg(Tri, 320.0, 200.0, 0.07, 0.5, 20.0), seg(Tri, 260.0, 170.0, 0.09, 0.5, 20.0)], 41),
+        Sfx::Cannon => mix(vec![l(&[seg(Noise, 1500.0, 150.0, 0.5, 0.6, 6.0)], 42), l(&[seg(Tri, 75.0, 32.0, 0.45, 0.9, 5.0)], 43)]),
+        Sfx::Magic => mix(vec![l(&[seg(Sine, 880.0, 1760.0, 0.16, 0.35, 8.0)], 44), l(&[vib(seg(Square(0.125), 1320.0, 1320.0, 0.16, 0.08, 10.0), 0.05)], 45)]),
+        Sfx::Capture => l(&[
+            seg(Square(0.25), 1400.0, 1400.0, 0.04, 0.16, 20.0),
+            seg(Square(0.25), 1100.0, 1100.0, 0.04, 0.16, 20.0),
+            seg(Square(0.25), 900.0, 900.0, 0.08, 0.16, 15.0),
+        ], 46),
+        Sfx::Convert => l(&arp(Saw, &[220.0, 262.0, 330.0, 440.0], 0.1, 0.22), 47),
     }
 }