fix: build errors — JsSIP types, LeadActivity fields, telephony config

- supervisor-sip-client: use RTCSession as any (JsSIP types mismatch)
- patient-360: add missing LeadActivity fields (createdAt, channel, etc)
- telephony-settings: add adminUsername/adminPassword to loadConfig

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/supervisor-sip-client.ts

@@ -1,4 +1,5 @@
 import JsSIP from 'jssip';
+type RTCSession = any;
 
 // Lightweight SIP client for supervisor barge sessions.
 // Separate from the agent's sip-client.ts — different lifecycle.
@@ -27,13 +28,11 @@ type SupervisorSipConfig = {
 
 class SupervisorSipClient {
     private ua: JsSIP.UA | null = null;
-    private session: JsSIP.RTCSession | null = null;
-    private config: SupervisorSipConfig | null = null;
+    private session: RTCSession | null = null;
     private listeners = new Map<string, Set<EventCallback>>();
     private audioElement: HTMLAudioElement | null = null;
 
     init(config: SupervisorSipConfig): void {
-        this.config = config;
         this.cleanup();
 
         // Hidden audio element for remote call audio
@@ -67,7 +66,7 @@ class SupervisorSipClient {
         });
 
         this.ua.on('newRTCSession', (data: any) => {
-            const rtcSession = data.session as JsSIP.RTCSession;
+            const rtcSession = data.session as RTCSession;
             if (rtcSession.direction !== 'incoming') return;
 
             console.log('[SupervisorSIP] Incoming call — auto-answering');