2.1.0

Added

• URL scheme support — e.g. open "timer://5", open "timer://2:30?window=2" (#51)
• Launch argument support — e.g. open -a Timer --args 5 --window 2 (#51)
• AppleScript support with scripting definition — e.g. tell app "Timer" to start timer "5" (#105)
• CLI wrapper script (timer-cli) with make install-cli target (#51)
• Commands: start, stop, reset, pause, new — all with optional window targeting
• Time input formats: 5 (5 min), 2.5 (2m30s fractional), 2:30 (2m30s colon)
• Scroll wheel input for setting timer duration (#140)
• Open/closed hand cursor feedback on arrow control (#139)

Fixed

• Label colors now use Apple Lead (#191919) instead of pure black for better contrast