feat(api): ✨ add raid aftermath state tracking

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

src/simulator/api-gdext/src/lib.rs

@@ -2826,6 +2826,10 @@ impl IRefCounted for GdGameState {
                 // bridge as players begin sieges; serialized for save
                 // round-trip via `siege_pressure_as_pairs`.
                 siege_pressure: Default::default(),
+                // p3-10c: per-lair raid aftermath state. Populated by the
+                // bridge on `Caught` raid outcomes; serialized for save
+                // round-trip via `raid_aftermath_as_pairs`.
+                raid_aftermath: Default::default(),
             },
             base,
         }