step 4: add async tiles and persistent cache

src/dpg_map/state.py

@@ -14,6 +14,7 @@ from .commands import MapCommandQueue
 from .exceptions import InvalidProviderError, MapNotFoundError
 from .overlays import LayerState, Overlay
 from .providers import TileProvider, get_default_provider, get_provider
+from .tiles import TileManager
 from .types import LatLon, Tag
 
 
@@ -44,16 +45,6 @@ class DpgMapConfig:
     debug: bool = False
 
 
-@dataclass(slots=True)
-class TileManagerState:
-    """Logical tile/cache counters until the tile manager is implemented."""
-
-    queued_tiles: int = 0
-    loading_tiles: int = 0
-    failed_tiles: int = 0
-    visible_tile_count: int = 0
-
-
 @dataclass(slots=True)
 class InteractionState:
     """Logical interaction state until GUI interaction is implemented."""
@@ -103,7 +94,7 @@ class MapState:
     overlays: dict[Tag, Overlay] = field(default_factory=dict)
     layers: dict[str, LayerState] = field(default_factory=default_layers)
     command_queue: MapCommandQueue = field(default_factory=MapCommandQueue)
-    tile_manager: TileManagerState = field(default_factory=TileManagerState)
+    tile_manager: TileManager = field(default_factory=TileManager)
     renderer: object | None = None
     interaction: InteractionState = field(default_factory=InteractionState)
     lock: RLock = field(default_factory=RLock)
@@ -238,6 +229,12 @@ def create_map_state(
         cache_dir=resolved_cache_dir,
         user_agent=user_agent if user_agent is not None else config.user_agent,
     )
+    state.tile_manager = TileManager(
+        memory_cache_max_tiles=config.memory_cache_max_tiles,
+        disk_cache_max_bytes=config.disk_cache_max_bytes,
+        worker_count=config.tile_worker_count,
+        user_agent=state.user_agent,
+    )
     with _maps_lock:
         _maps[map_tag] = state
     return state