Create comprehensive help page covering:
- Getting started workflow
- Sites and IP management
- Scan configuration
- Running scans manually
- Scheduling automated scans
- Scan comparisons
- Alerts and alert rules
- Webhook configuration
Add Help link with icon to navigation bar.
- Save JSON/HTML/ZIP paths to database when scans complete
- Remove orphaned scan-config-id reference causing JS errors
- Add showAlert function to scan_detail.html and scans.html
- Increase notification z-index to 9999 for modal visibility
- Replace inline alert creation with consistent toast notifications
