Run initial retention checks regardless of host uptime

pigway_frame_flow/display/cloud_library.py

@@ -101,7 +101,7 @@ class CloudLibrary:
         return True
 
     def sweep(self):
-        if time.monotonic() - self.checked < 60:
+        if self.checked and time.monotonic() - self.checked < 60:
             return
         self.checked = time.monotonic()
         with self.service.lock:

pigway_frame_flow/display/retention.py

@@ -90,7 +90,7 @@ class Retention:
         )
 
     def sweep(self):
-        if time.monotonic() - self.checked < 3600:
+        if self.checked and time.monotonic() - self.checked < 3600:
             return
         self.checked = time.monotonic()
         with self.service.lock:

pigway_frame_flow/extensions/storage.py

@@ -86,7 +86,7 @@ class LocalRetention:
         }
 
     def sweep(self, force=False, dry_run=False):
-        if not force and time.monotonic() - self.last < 3600:
+        if not force and self.last and time.monotonic() - self.last < 3600:
             return {}
         if not dry_run:
             self.last = time.monotonic()