Display durations in human-readable format (N days/hours/minutes/seconds)

[Copilot]

Duration formatting improvement - ✅ Complete

• Create a helper function to format durations in a human-readable way (N days, N hours, N minutes, or N seconds)
• Replace current duration formatting in main.go
• Replace current duration formatting in mcp.go
• Add unit tests for the new duration formatting function
• Build and test the changes to ensure they work correctly
• Manually verify the changes work as expected
• Improve grammar to use singular forms (1 second, 1 minute, 1 hour, 1 day)
• Run security checks (CodeQL - 0 alerts)
• Final verification (all tests pass, build successful)
• Move formatDuration to own file (duration.go)
• Move test to own file (duration_test.go)

Summary:
Successfully implemented human-readable duration formatting that displays durations using the largest appropriate unit (days, hours, minutes, or seconds) with correct singular/plural grammar.

Code Organization:

• duration.go: Contains the formatDuration function
• duration_test.go: Contains comprehensive tests for formatDuration
• Removed duplicate test from mcp_test.go

Examples:

• Before: 15s, 135s, 3600s, 86400s
• After: 15 seconds, 2 minutes, 1 hour, 1 day

Original prompt

Display durations using a simpler format by rounding, e.g N days, N hours, N minutes or N seconds.

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[alexec]

@copilot Move fun to own file

[Copilot]

Moved to duration.go (e30f557)

[alexec]

@copilot Move test too.

[Copilot]

Moved to duration_test.go (e30f557)