Stalled Operation Visual Indicator

What: The spinner now changes color from blue to orange when operations take longer than 3 seconds, providing visual feedback about potentially stuck processes.

Details:

• Spinner starts blue during normal operation
• After 3 seconds, gradually transitions to orange over the next 3 seconds
• Fully orange at 6+ seconds to indicate significantly delayed operation
• Smooth color interpolation provides clear visual feedback
• Only affects the spinner appearance, doesn't change functionality
• Evidence: nE0() at line 402439, color interpolation in cE0() at line 402326 and lE0() at line 402369