Port loiter and harden 26.3 bed updates

mosfet/world.py

@@ -13,6 +13,7 @@ from mosfet.info import mobs
 class World:
     def __init__(self, global_state):
         self.g = global_state
+        self._bed_occupancy_states = {}
 
     def block_at(self, x, y, z):
         return self.g.chunks.get_block_at(x, y, z)
@@ -316,11 +317,15 @@ class World:
         return result
 
     def check_bed_occupied(self, bed):
-        """Return whether a loaded bed block currently has occupied=true."""
+        """Return occupancy, logging only the first observation or a change."""
+        bed = tuple(bed)
         bid = self.g.chunks.get_block_at(*bed)
         occupied = blocks.PROPS.get(bid, {}).get('occupied') == 'true'
-        print('Checking bed occupancy:', bed, '->',
-              'occupied' if occupied else 'free')
+        previous = self._bed_occupancy_states.get(bed)
+        if previous is None or previous != occupied:
+            print('Checking bed occupancy:', bed, '->',
+                  'occupied' if occupied else 'free')
+            self._bed_occupancy_states[bed] = occupied
         return occupied
 
     def find_cache_openings(self, area):