Container defaulted to UTC (no TZ configured), so calendar_run_time and
the scraper's date-of-week logic didn't match the user's local clock.
Uncomments the existing /etc/localtime mount and installs tzdata so the
host's zoneinfo symlink actually resolves instead of silently falling
back to UTC.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013RbBoYm23muVyMZ18Ldqa6
