fix: remove goal standability check from provisional path

The is_standable_tile(goal) check was causing failures when goal position
wasn't directly standable (common case). A* doesn't require goal to be
standable - it finds the best path it can. Removed the check and return
fallback single-point path when start isn't standable.

src/entities/shared_systems/pathfinding.rs

@@ -585,13 +585,7 @@ pub fn calculate_provisional_path(
         LOCAL_FAILED_PATHS.with(|f| {
             *f.borrow_mut() += 1;
         });
-        return Vec::new();
+        return vec![Vec3::new(start.x as f32, start.y as f32, start.z as f32)];
-    }
-    if !is_standable_tile(tilemap, goal) {
-        LOCAL_FAILED_PATHS.with(|f| {
-            *f.borrow_mut() += 1;
-        });
-        return Vec::new();
     }
 
     let estimated_tiles = octile_distance_3d(start, goal) / ITILE_SIZE;