Generate a secure, time-limited link that allows customers to view their booking
details and approve any pending scheduled payments.

Use Cases:

• Customer needs to review booking details
• Scheduled payments require customer approval (PENDING_APPROVAL status)
• Customer support needs to provide booking access
• Automated email/SMS notifications with booking links

Link Features:

• Secure, cryptographically signed URL
• Time-limited access (typically 24 hours)
• Customer-specific authentication
• Read-only booking access
• Scheduled payment approval capability

Security Considerations:

• Links expire automatically for security
• Customer identity is embedded in the secure token
• All customer actions are audit logged
• Optional IP address validation