refactor: enforce BasedPyright strict type checking (#5158)

nanobot/agent/turn_delivery.py

@@ -6,7 +6,7 @@ import dataclasses
 import time
 from collections.abc import Awaitable, Callable
 from dataclasses import dataclass, field
-from typing import Any
+from typing import TYPE_CHECKING, Any, cast
 
 from nanobot.bus.events import InboundMessage, OutboundMessage
 from nanobot.bus.outbound_events import (
@@ -20,6 +20,9 @@ from nanobot.bus.progress import build_bus_progress_callback
 from nanobot.bus.queue import MessageBus
 from nanobot.bus.runtime_events import RuntimeEventBus, RuntimeEventPublisher
 
+if TYPE_CHECKING:
+    from nanobot.utils.llm_runtime import LLMRuntime
+
 
 @dataclass(frozen=True)
 class TurnRoute:
@@ -62,7 +65,7 @@ class TurnDeliveryFactory:
         route = self._default_route(msg, session_key)
         if self.route_policy is not None:
             route = self.route_policy(msg, session_key, route)
-            if not isinstance(route, TurnRoute):
+            if not isinstance(cast(object, route), TurnRoute):
                 raise TypeError("turn route policy must return TurnRoute")
         return TurnDelivery(
             bus=self.bus,
@@ -186,7 +189,7 @@ class TurnDelivery:
                 started_at=started_at,
             )
 
-    def record_runtime(self, runtime: Any) -> None:
+    def record_runtime(self, runtime: LLMRuntime) -> None:
         self.runtime_event_publisher.record_turn_runtime(self.session_key, runtime)
 
     def record_latency(self, latency_ms: int | None) -> None: