CRITICAL BUG: Automatically deactivate daily monitoring preference after departure date has passed

[KrishnaRaheja]

CRITICAL BUG

Problem

There is currently no handling for user preferences in daily monitoring when the departure date in a flight alert ("watch") has already passed.

Expected Behavior

• When the departure date for a monitored flight is past, the related user preference for daily monitoring should be deactivated or removed.

Actual Behavior

• Preference stays as active and tokens are wasted as claude still goes through the preference

Desired Fix

• Implement logic to check the current date against the watch's departure date daily.
• If the departure date is in the past, automatically deactivate (or remove) the user's monitoring preference for that watch.