- Fix parseHandshake to correctly parse number-unit pairs from '14 hours, 24 minutes, 40 seconds ago'
Previous logic tried to parse unit words instead of finding associated numbers
Now correctly accumulates all time units (hours, minutes, seconds)
- Fix q key handling to properly check screen type before quitting
Only quit application when 'q' is pressed on list screen
Other screens (detail, add, help) now handle 'q' to navigate back
Note: q key navigation may still need investigation for edge cases
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