feat: 完善知识库、策略预览与OnlyOffice集成，增强后端启动依赖检查

server/tests/test_server_start_dependencies.py

@@ -0,0 +1,40 @@
+from __future__ import annotations
+
+from pathlib import Path
+import os
+import stat
+import subprocess
+
+
+def test_dependencies_ready_fails_when_jwt_is_missing(tmp_path: Path) -> None:
+    fake_python = tmp_path / "fake-python.sh"
+    fake_python.write_text(
+        """#!/usr/bin/env bash
+if [ "$1" = "-c" ]; then
+  case "$2" in
+    *jwt*) exit 1 ;;
+    *) exit 0 ;;
+  esac
+fi
+exit 0
+""",
+        encoding="utf-8",
+    )
+    fake_python.chmod(fake_python.stat().st_mode | stat.S_IEXEC)
+
+    script_path = Path(__file__).resolve().parents[1] / "server_start.sh"
+    script_prefix = script_path.read_text(encoding="utf-8").split('case "$MODE" in', 1)[0]
+    command = f"""{script_prefix}
+PYTHON_BIN="{fake_python}"
+dependencies_ready
+"""
+    result = subprocess.run(
+        ["bash", "-c", command],
+        capture_output=True,
+        text=True,
+        env={**os.environ, "MODE": "test"},
+        cwd=script_path.parent,
+        check=False,
+    )
+
+    assert result.returncode != 0