The Time Entry Templates page (/templates) was throwing a 500 error
when displaying templates with usage data. The templates referenced
a 'timeago' Jinja2 filter that was never registered.
Changes:
- Added timeago filter to app/utils/template_filters.py
- Converts datetime to human-readable relative time (e.g., "2 hours ago")
- Handles None, naive/aware datetimes, and future dates gracefully
- Provides appropriate granularity from seconds to years
- Uses proper singular/plural forms
- Added 11 comprehensive unit tests in tests/test_utils.py
- Tests for None values, all time ranges, edge cases
- Tests for naive datetimes and future dates
- Tests for singular/plural formatting
- Added smoke test in tests/test_time_entry_templates.py
- Specifically tests templates with usage_count and last_used_at
- Ensures the filter renders correctly in the template
The filter is used in:
- app/templates/time_entry_templates/list.html (line 96)
- app/templates/time_entry_templates/edit.html (line 140)
Fixes#151
