docs: archive entra materials and simplify deployment docs

docs/design/ORDER_SEALS_DESIGN_GUIDE.md

@@ -166,7 +166,7 @@ For digital credentials, you can create color variations:
 ## Usage Guidelines
 
 ### For Credential Images
-1. Use PNG format for Entra VerifiedID (convert from SVG)
+1. Use PNG format for credential clients (convert from SVG)
 2. Ensure images are publicly accessible via HTTPS
 3. Use CDN for fast delivery
 4. Maintain aspect ratio (1:1, square)
@@ -211,4 +211,3 @@ For digital credentials, you can create color variations:
 **Design Heritage**: Order of St John (OSJ)  
 **Central Symbol**: Maltese Cross (8-pointed, V-shaped arms)  
 **Last Updated**: [Current Date]
-