Each user's sites, groups, technicians, timing, weather location and
hidden panels/columns are saved by Zoho email in DATA_DIR, merged over
the .env defaults and validated on PUT /api/settings. /api/names
suggests names from recent tickets, and weather is cached per zip from a
fixed list of campuses.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
