Added
Flexible Time Unit Selection: Users can now choose between seconds and minutes for all interval inputs
Unit Selector Dropdown: Added intuitive unit selector (sec/min) in both settings page and popup
Smart Display Format: Intervals automatically display in the most readable format (e.g., 60 seconds shows as "1 min")
Dynamic Input Validation: Minimum interval hint updates based on selected unit (30 seconds or 0.5 minutes)
Changed
Interval Storage Format: All intervals now stored internally in seconds (breaking change from previous 0.5-minute system)
Improved User Experience: More intuitive time input with familiar units (seconds/minutes)
Settings Page: Updated with unit selector for default interval configuration
Popup Interface: Enhanced interval controls with unit dropdown for each tab
Conversion Logic: Seamless conversion between user-selected units and internal seconds storage
Technical
Migration Support: Automatic detection and handling of old interval format (values < 30 reset to default)
Chrome Alarms API: Proper conversion from seconds to minutes when creating alarms (interval / 60)
Consistent Validation: 30-second minimum enforced regardless of user-selected unit
Code Organization: Added conversion helper functions (convertSecondsToDisplay, convertDisplayToSeconds)
Migration Notes
Existing intervals less than 30 seconds will be automatically reset to 30 seconds (default)
Old format data (0.5, 1, 2 for minutes) will be converted or reset to new format
All intervals now display intelligently based on their value (60s+ shows in minutes if evenly divisible)