1、修复 chat_history.txt不存在的问题

pam_deploy_graph/interactive.py

@@ -6,6 +6,8 @@ import time
 import json
 import shlex
 import builtins
+import os
+import sys
 from dataclasses import asdict
 from pathlib import Path
 from typing import Any, Callable
@@ -557,8 +559,16 @@ def _build_prompt_input(input_func: InputFunc) -> InputFunc:
         "checkpoint",
         "exit",
     ]
+    history = None
+    try:
+        history_path = Path("runtime") / "chat_history.txt"
+        history_path.parent.mkdir(parents=True, exist_ok=True)
+        history = FileHistory(str(history_path))
+    except OSError:
+        history = None
+
     session = PromptSession(
-        history=FileHistory(str(Path("runtime") / "chat_history.txt")),
+        history=history,
         completer=WordCompleter(commands, ignore_case=True, sentence=True),
     )
     return session.prompt

tests/test_interactive_cli.py

@@ -1,8 +1,11 @@
+import builtins
 from pathlib import Path
 
+import pytest
+
 from pam_deploy_graph.agent import PamDeployAgent
 from pam_deploy_graph.fake_runner import FakeActionRunner
-from pam_deploy_graph.interactive import InteractiveCliSession
+from pam_deploy_graph.interactive import InteractiveCliSession, _build_prompt_input
 
 
 PARAMS = {
@@ -130,3 +133,31 @@ def test_chat_can_hot_load_mcp_config(tmp_path: Path):
     assert session.agent.mcp_runner is not None
     assert session.agent.router.mcp_runner is not None
     assert any("MCP 配置已加载" in item for item in output)
+
+
+def test_prompt_history_creates_runtime_dir(tmp_path: Path, monkeypatch):
+    pytest.importorskip("prompt_toolkit")
+    monkeypatch.chdir(tmp_path)
+
+    prompt = _build_prompt_input(builtins.input)
+
+    assert callable(prompt)
+    assert (tmp_path / "runtime").is_dir()
+
+
+def test_packaged_chat_uses_plain_input_by_default(monkeypatch):
+    monkeypatch.setattr("sys.frozen", True, raising=False)
+    monkeypatch.delenv("PAM_CHAT_PROMPT_TOOLKIT", raising=False)
+    monkeypatch.delenv("PAM_CHAT_SIMPLE_INPUT", raising=False)
+
+    prompt = _build_prompt_input(builtins.input)
+
+    assert prompt is builtins.input
+
+
+def test_simple_input_env_disables_prompt_toolkit(monkeypatch):
+    monkeypatch.setenv("PAM_CHAT_SIMPLE_INPUT", "1")
+
+    prompt = _build_prompt_input(builtins.input)
+
+    assert prompt is builtins.input