fix: keep queued paste payloads atomic (#74797)

Co-authored-by: eloklam <22125285+eloklam@users.noreply.github.com>
Co-authored-by: Orca <help@stably.ai>

tests/cli/test_cli_queue_paste.py

@@ -0,0 +1,22 @@
+"""Regression tests for collapsed paste references passed to /queue."""
+
+from queue import Queue
+from unittest.mock import patch
+
+from cli import HermesCLI
+
+
+def test_queue_expands_collapsed_paste_reference(tmp_path):
+    pasted = "first\nmiddle\nlast"
+    paste_file = tmp_path / "paste.txt"
+    paste_file.write_text(pasted, encoding="utf-8")
+    placeholder = f"[Pasted text #1: 3 lines → {paste_file}]"
+    cli_obj = HermesCLI.__new__(HermesCLI)
+    cli_obj._agent_running = False
+    cli_obj._pending_input = Queue()
+    cli_obj._pending_resume_sessions = None
+
+    with patch("cli._cprint"):
+        assert cli_obj.process_command(f"/queue {placeholder}") is True
+
+    assert cli_obj._pending_input.get_nowait() == pasted