feat: persist session origin metadata across connectors

src/gateway/server-methods/sessions.ts

@@ -6,6 +6,7 @@ import { stopSubagentsForRequester } from "../../auto-reply/reply/abort.js";
 import { clearSessionQueues } from "../../auto-reply/reply/queue.js";
 import { loadConfig } from "../../config/config.js";
 import {
+  snapshotSessionOrigin,
   resolveMainSessionKey,
   type SessionEntry,
   updateSessionStore,
@@ -173,6 +174,7 @@ export const sessionsHandlers: GatewayRequestHandlers = {
         contextTokens: entry?.contextTokens,
         sendPolicy: entry?.sendPolicy,
         label: entry?.label,
+        origin: snapshotSessionOrigin(entry),
         lastChannel: entry?.lastChannel,
         lastTo: entry?.lastTo,
         skillsSnapshot: entry?.skillsSnapshot,