chore(lint): ruff I001 auto-fix on acp_runtime + test_status_chip

main 上残留的 ruff lint 失败（PR #107 引入），在本 PR 里顺手清掉，让 CI 绿。

Author: SymbolStar

acp_runtime.py

@@ -11,7 +11,7 @@
 import subprocess
 import threading
 
-from agent_runtime import AgentError, clean, _killpg_safe
+from agent_runtime import AgentError, _killpg_safe, clean
 
 ACP_AGENT_TIMEOUT = int(os.environ.get("OPENFORGE_ACP_AGENT_TIMEOUT", "240"))
 

tests/test_status_chip.py

@@ -201,8 +201,8 @@ def test_cancel_endpoint_marks_chip_and_audits(store, monkeypatch):
     and a best-effort SIGTERM is sent to the bound subprocess group."""
     import sys
     sys.modules.pop("server", None)
-    import server as srv
     import post_router
+    import server as srv
 
     t = _make_thread(store)
     chip = store.add_thread_post(