api: List screens by monitor name

The *GET /screens/* path operation now returns a mapping of monitor
names to screen properties.  This matches the new behavior of the *POST
/screen/{name}/refresh* operation.

svc/src/hudctrl/api.py

@@ -71,7 +71,7 @@ def get_marionette():
 
 @app.get('/screen/')
 async def list_screens():
-    return {'screens': await svc.get_screens()}
+    return await svc.get_screens()
 
 
 @app.post(

svc/src/hudctrl/hud.py

@@ -2,7 +2,7 @@ import asyncio
 import json
 import logging
 from pathlib import Path
-from typing import Dict, List, Optional
+from typing import Dict, Optional
 
 import pydantic
 from aiomarionette import Marionette, WindowRect
@@ -35,16 +35,16 @@ class HUDService:
 
         self.urls_file = Path('urls.json')
 
-    async def get_screens(self) -> List[HUDScreen]:
+    async def get_screens(self) -> Dict[str, HUDScreen]:
         assert self.marionette
-        screens = []
-        for handle in await self.marionette.get_window_handles():
+        screens = {}
+        for name, handle in self.windows.items():
             await self.marionette.switch_to_window(handle)
             title = await self.marionette.get_title()
             url = await self.marionette.get_url()
             rect = await self.marionette.get_window_rect()
-            screens.append(
-                HUDScreen(handle=handle, title=title, url=url, dimensions=rect)
+            screens[name] = HUDScreen(
+                handle=handle, title=title, url=url, dimensions=rect
             )
         return screens