review ammends - remove CHANGES.md entry and refactor

CHANGES.md

@@ -12,10 +12,6 @@ $ towncrier create <PR-number>.<break|feat|fix>.md --content "Short description"
 
 <!-- towncrier release notes start -->
 
-### Enhancements
-
-[#493](https://github.com/cylc/cylc-uiserver/pull/493) - Added mutation for scanning filesystem.
-
 ## cylc-uiserver-1.3.1 (Released 2023-09-08)
 
 [Updated cylc-ui to 2.1.0](https://github.com/cylc/cylc-ui/blob/master/CHANGES.md)

cylc/uiserver/resolvers.py

@@ -574,7 +574,26 @@ async def service(
         kwargs: Dict[str, Any],
     ) -> List[Union[bool, str]]:
 
-        return await self.get_service(command, kwargs, workflows)
+        if command == 'clean': # noqa: <err code> 
+            return await Services.clean(
+                workflows,
+                kwargs,
+                self.workflows_mgr,
+                log=self.log,
+                executor=self.executor
+            )
+        elif command == 'play':
+            return await Services.play(
+                workflows,
+                kwargs,
+                self.workflows_mgr,
+                log=self.log
+            )
+        elif command == 'scan':
+            return await Services.scan(
+                kwargs,
+                self.workflows_mgr
+            )
 
     async def subscription_service(
         self,