Merged PR 2408: updated context for current state at 19062026

updated context for current state at 19062026

Related work items: #23754

context/architecture.md

@@ -1,5 +1,33 @@
 # Architecture Reference
 
+## Architecture Programme Status
+
+### Discovery Status
+
+Complete
+
+### Current Phase
+
+Adoption Planning
+
+### Current Proven Business Decision Models
+
+- Appeal Type Policy
+- Representation Entry Policy
+- Representation Type Availability
+
+### Next Recommended Architecture Stream
+
+Portal API Security & Access Boundary Assessment
+
+### Objectives
+
+- endpoint inventory
+- authenticated/public classification
+- ownership validation review
+- access-control consistency review
+- security boundary assessment
+
 ## Runtime Topology
 
 1. Next.js runtime serves UI routes and API routes (legacy custom server files are present but not active).