Calendula's pastelize (raw provider colour -> theme-fitting pastel) was
byte-identical to the kit's components.pastelize, so delete the app-local copy
and repoint its ~13 call sites (views, widgets, swatch row, calendar chip) at
the shared one. CalendarColorChip — the calendar-glyph avatar — stays local and
now tints from the kit pastelize.
Compile + unit tests + lintDebug green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>