kill s2s sessions (#1566)

* kill s2s sessions

* undo

lib/tasks/llm/index.js

@@ -49,6 +49,22 @@ class TaskLlm extends Task {
       await this.llmMcpService.init();
     }
     await this.llm.exec(cs, {ep});
+
+    /* If the *vendor* ended the s2s session itself (WS disconnect, server error,
+     * etc.) rather than us kill()ing it, the freeswitch media session is still
+     * bound to the caller's endpoint. Its audio then bleeds into whatever verb
+     * runs next — most visibly a `dial` that bridges another leg onto the same
+     * (anchored) endpoint, so the caller/recording hears the agent mixed with the
+     * transferred party (issue: elevenlabs "not hanging up" / mixed audio).
+     * Tear the vendor session down now, before any follow-on verb executes.
+     * Skipped when kill() already deleted it (this.killed) or the call is gone. */
+    if (!this.killed && !cs.callGone && cs?.ep?.uuid) {
+      try {
+        await this.llm.kill(cs);
+      } catch (err) {
+        this.logger.info({err}, 'TaskLlm:exec - error tearing down orphaned s2s media session');
+      }
+    }
   }
 
   async kill(cs) {