fix: extract recordEvents field from root object in subscription resolver

The resolver was returning the entire root object instead of the
recordEvents field within it, causing GraphQL to fail when resolving
child fields like uri, type, etc.

Author: daviddao

internal/graphql/schema/builder.go

@@ -156,7 +156,10 @@ func (b *Builder) buildSubscriptionType() *graphql.Object {
 				},
 			},
 			Resolve: func(p graphql.ResolveParams) (interface{}, error) {
-				// This is called for each event - just return the event
+				// Extract recordEvents from the root object passed by subscription handler
+				if m, ok := p.Source.(map[string]interface{}); ok {
+					return m["recordEvents"], nil
+				}
 				return p.Source, nil
 			},
 		},