feat(timesheet): make hour-output default, decimal with two decimals

src/cli/args.rs

@@ -51,9 +51,9 @@ pub enum Commands {
 
     /// Display extracted timesheets
     Timesheet {
-        /// Display time as minutes (HH:MM) instead of decimal hours (H.Hh)
+        /// Display time as decimal hours (X.XXh) instead of the default HH:MM format
         #[arg(short, long)]
-        minutes: bool,
+        decimal: bool,
 
         /// Show all timecards grouped by day instead of the summary report
         #[arg(short, long)]