Phase B.1 - Add Connection View with socket grouping

lib/har-parser.js

@@ -25,6 +25,10 @@ function parseHAR(lighthouseResult) {
       protocol: request.protocol,
       priority: request.priority,
       
+      // Connection/Socket information for connection view
+      socket: request.connectionId || request.socket || null,
+      connectionReused: request.connectionReused || false,
+      
       // Timing breakdown (in milliseconds)
       timing: {
         dns: timing.dns,