Eight copies of the compact "5m ago / 3h ago" relative-time formatter
existed across components and pages, differing only in rounding,
"just now" capitalization, absolute-date cutoff, and missing-value
fallback. Extend lib/date.ts formatRelativeTime with options for those
axes (backwards compatible for existing callers) and convert the
duplicates to thin wrappers preserving each call site's exact output.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
