Show spinner only for backup and restore operations

Other OperationLog dialogs (crontab show, remote test, retention) no
longer display the spinner since they complete quickly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tui/screens/remotes.py

@@ -83,7 +83,7 @@ class RemotesScreen(Screen):
 
     @work
     async def _test_remote(self, name: str) -> None:
-        log_screen = OperationLog(f"Testing Remote: {name}")
+        log_screen = OperationLog(f"Testing Remote: {name}", show_spinner=False)
         self.app.push_screen(log_screen)
         rc, stdout, stderr = await run_cli("remotes", "test", f"--name={name}")
         if stdout:

tui/screens/retention.py

@@ -68,7 +68,7 @@ class RetentionScreen(Screen):
 
     @work
     async def _do_cleanup(self, target: str) -> None:
-        log_screen = OperationLog(f"Retention: {target}")
+        log_screen = OperationLog(f"Retention: {target}", show_spinner=False)
         self.app.push_screen(log_screen)
         rc = await stream_cli(log_screen.write, "retention", f"--target={target}")
         if rc == 0:
@@ -79,7 +79,7 @@ class RetentionScreen(Screen):
 
     @work
     async def _do_cleanup_all(self) -> None:
-        log_screen = OperationLog("Retention: All Targets")
+        log_screen = OperationLog("Retention: All Targets", show_spinner=False)
         self.app.push_screen(log_screen)
         rc = await stream_cli(log_screen.write, "retention", "--all")
         if rc == 0:

tui/screens/schedule.py

@@ -138,7 +138,7 @@ class ScheduleScreen(Screen):
 
     @work
     async def _show_crontab(self) -> None:
-        log_screen = OperationLog("Current Crontab")
+        log_screen = OperationLog("Current Crontab", show_spinner=False)
         self.app.push_screen(log_screen)
         rc, stdout, stderr = await run_cli("schedule", "show")
         if stdout:

tui/widgets/operation_log.py

@@ -33,9 +33,10 @@ class OperationLog(ModalScreen[None]):
 
     BINDINGS = [("escape", "close", "Close")]
 
-    def __init__(self, title: str = "Operation Output"):
+    def __init__(self, title: str = "Operation Output", show_spinner: bool = True):
         super().__init__()
         self._title = title
+        self._show_spinner = show_spinner
         self._mounted_event = asyncio.Event()
         self._buffer: list[str] = []
 
@@ -45,6 +46,7 @@ class OperationLog(ModalScreen[None]):
             yield RichLog(id="ol-log", wrap=True, highlight=True, markup=True)
             with Horizontal(id="ol-footer"):
                 yield Button("Close", variant="primary", id="ol-close")
+                if self._show_spinner:
                     yield SpinnerWidget("arrow3", id="ol-spinner")
 
     def on_mount(self) -> None: