fix(proxy-engine): improve inbound SIP routing diagnostics and enrich leg media state reporting

ts/shared/proxy-events.ts

@@ -80,6 +80,9 @@ export interface ILegStateChangedEvent {
   call_id: string;
   leg_id: string;
   state: string;
+  codec?: string | null;
+  rtpPort?: number | null;
+  remoteMedia?: string | null;
   metadata?: Record<string, unknown>;
 }
 

ts/shared/status.ts

@@ -43,7 +43,11 @@ export interface IActiveCall {
 
 export interface IHistoryLeg {
   id: string;
-  type: string;
+  type: TLegType;
+  state: string;
+  codec: string | null;
+  rtpPort: number | null;
+  remoteMedia: string | null;
   metadata: Record<string, unknown>;
 }