Add Telegram avatar proxy and realtime CRM websocket updates

omni_chat/src/worker.ts

@@ -72,6 +72,12 @@ type ContactProfile = {
   avatarUrl: string | null;
 };
 
+function toTelegramAvatarProxyUrl(externalContactId: string) {
+  const id = String(externalContactId ?? "").trim();
+  if (!/^\d+$/.test(id)) return null;
+  return `/api/omni/telegram/avatar/${id}`;
+}
+
 function buildContactProfile(
   normalized: OmniInboundEnvelopeV1["payloadNormalized"],
   externalContactId: string,
@@ -99,7 +105,7 @@ function buildContactProfile(
 
   return {
     displayName,
-    avatarUrl: asString(normalized.contactAvatarUrl),
+    avatarUrl: asString(normalized.contactAvatarUrl) ?? toTelegramAvatarProxyUrl(externalContactId),
   };
 }