Apply suggestions from code review of branch flash-led-sim

Co-authored-by: Julian Stirling <julian@julianstirling.co.uk>

src/openflexure_microscope_server/things/camera/simulation.py

@@ -340,7 +340,7 @@ class SimulatedCamera(BaseCamera):
         pl_img = Image.fromarray(np_img.astype("uint8"))
         return pl_img.resize((self.shape[1], self.shape[0]), Image.Resampling.BILINEAR)
 
-    @lt.action
+    def set_led(self, led_on: bool = True) -> None:
     def set_led(self, led_on: bool = True, led_channel: str = None) -> None:  # noqa: ARG002
         """Set the simulated LED to on or off."""
         if led_on:

src/openflexure_microscope_server/things/illumination.py

@@ -5,8 +5,8 @@ from typing import Literal
 
 import labthings_fastapi as lt
 
-from .camera import BaseCamera
-from .stage import BaseStage
+from .camera import SimulatedCamera
+from .stage import SangaboardThing
 
 
 class Illumination(lt.Thing):
@@ -27,7 +27,7 @@ class Illumination(lt.Thing):
 class SangaIllumination(Illumination):
     """Illumination driven by a Sangaboard."""
 
-    _stage: BaseStage = lt.thing_slot()
+    _stage: SangaboardThing = lt.thing_slot()
 
     @lt.action
     def flash(
@@ -51,7 +51,7 @@ class SangaIllumination(Illumination):
 class SimulatorIllumination(Illumination):
     """Illumination control in the simulator."""
 
-    _cam: BaseCamera = lt.thing_slot()
+    _cam: SimulatedCamera = lt.thing_slot()
 
     @lt.action
     def flash(

src/openflexure_microscope_server/things/stage/sangaboard.py

@@ -173,7 +173,6 @@ class SangaboardThing(BaseStage):
             sb.zero_position()
         self.update_position()
 
-    @lt.action
     def set_led(
         self,
         led_on: bool = True,