I can see you want a Gantt chart-style timeline view similar to the project tracker image you shared. Let me redesign the timeline component to show job names in the first column and display all possible runs as horizontal bars across a time grid.

I've completely redesigned the timeline component to match the Gantt chart style from your reference image. The new design features job names in the first column and a horizontal timeline grid showing all scheduled runs as colored bars. Each job gets a unique color, runs are positioned based on their exact time within each hour, and have a minimum 30-minute duration as requested. The timeline shows the next 24 hours with hourly columns and displays all possible cron job executions as visual bars across the timeline.

I fixed the hoisting error by moving the getJobColor function outside the component definition. The issue was that the function was being called inside the useMemo hook before it was declared, causing a temporal dead zone error. Moving it outside the component ensures it's available when needed during the timeline data calculation.