Beam Payment Extension v1.2

This should fix the redirect problem and header

v1.1 - Security Hardening Update

Security Improvements

• Enforced HMAC Signature Validation - Webhook requests now REQUIRE valid signatures
• Duplicate Payment Protection - Prevents double payments via transaction ID check
• Invoice Validation - Verifies invoice exists before processing payments
• API Key Protection - Hidden in admin panel (password field)
• Rate Limiting - 60 requests/minute on webhook endpoint

Bug Fixes

• Improved error messages for Beam API failures
• Better logging for debugging payment issues

Requirements

• Webhook Secret (HMAC Key) is now REQUIRED in settings