Scheduled reports — --schedule daily to auto-generate HTML

[dfdezdom]

Description

Add ability to schedule automatic report generation (e.g. daily) that outputs HTML without user intervention.

Acceptance criteria

• --schedule daily flag that runs analysis and saves HTML report
• Optional: send report via email or write to a fixed path
• Respects existing flags (-r, -c, -a, --min-market-cap, etc.)
• Works with cron / Task Scheduler (just a CLI flag, no daemon)

Notes

Keep it simple — just a CLI flag that skips interactive output and focuses on export. Can be triggered by external cron job.