feat(simulator): ✨ Add Rust API bindings for bridge-related city operations in simulator extensions

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

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

@@ -1546,6 +1546,20 @@ impl GdCity {
     fn mark_attacked(&mut self, turn: i64) {
         self.inner.mark_attacked(turn.max(0) as u32);
     }
+
+    /// Mark the city as captured on `turn`. Enables the occupation production
+    /// penalty for the next OCCUPATION_TURNS turns.
+    #[func]
+    fn mark_captured(&mut self, turn: i64) {
+        self.inner.mark_captured(turn.max(0) as u32);
+    }
+
+    /// Returns the production multiplier for `current_turn`.
+    /// 0.5 while the city is under occupation (first 5 turns post-capture), 1.0 otherwise.
+    #[func]
+    fn get_occupation_production_mult(&self, current_turn: i64) -> f64 {
+        self.inner.occupation_production_mult(current_turn.max(0) as u32)
+    }
 }
 
 // ── Private helpers for GdCity ──────────────────────────────────────────