feat(system):优化后端

1.新增后端测试
2.增加了后端的加密
3.增加了i18n（国际化）

pyproject.toml

@@ -12,7 +12,9 @@ description = "A multi-agent system"
 readme = "README.md"
 requires-python = ">=3.12,<4.0"
 dependencies = [
+    "alembic>=1.13.0",
     "asyncpg>=0.31.0",
+    "cryptography>=42.0.0",
     "httpx>=0.28.1",
     "jinja2>=3.1.6",
     "loguru>=0.7.3",
@@ -25,6 +27,7 @@ dependencies = [
     "ray[default,serve]>=2.54.0",
     "rich>=14.3.3",
     "sqlalchemy>=2.0.49",
+    "tavily-python>=0.7.0",
 ]
 
 [project.optional-dependencies]
@@ -37,3 +40,12 @@ dev = [
     "pytest>=9.0.3",
     "pytest-asyncio>=1.3.0",
 ]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+pythonpath = ["."]
+addopts = "-ra -q --strict-markers"
+filterwarnings = [
+    "ignore::DeprecationWarning",
+]