feat: load remote map config and constrain tile bounds

miniprogram/engine/layer/tileLayer.ts

@@ -1,4 +1,5 @@
 import { createTileGrid, type TileItem } from '../../utils/tile'
+import { isTileWithinBounds } from '../../utils/remoteMapConfig'
 import { getTileSizePx, type CameraState } from '../camera/camera'
 import { type MapScene } from '../renderer/mapRenderer'
 import { type TileStore } from '../tile/tileStore'
@@ -52,7 +53,7 @@ export class TileLayer implements MapLayer {
         viewportHeight: scene.viewportHeight,
         tileSize,
         overdraw: scene.overdraw,
-      })
+      }).filter((tile) => isTileWithinBounds(scene.tileBoundsByZoom, scene.zoom, tile.x, tile.y))
     }
 
     tileStore.queueVisibleTiles(this.cachedTiles, scene, gridKey)
@@ -122,3 +123,4 @@ export class TileLayer implements MapLayer {
     }
   }
 }
+