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）

tests/unit/test_regulatory_template.py

@@ -0,0 +1,66 @@
+"""``regulatory_node/template.py`` 中的请求/响应/依赖模型校验。"""
+
+import pytest
+from pydantic import ValidationError
+
+from kilostar.core.individual.regulatory_node.template import (
+    MessageRequest,
+    MessageResponse,
+    RegulatoryNodeDeps,
+)
+
+
+def test_message_request_valid_for_client_platform():
+    req = MessageRequest(
+        platform="client",
+        user_name="alice",
+        platform_id=None,
+        message="hi",
+    )
+    assert req.platform == "client"
+    assert req.platform_id is None
+
+
+def test_message_request_valid_for_onebot_platform():
+    req = MessageRequest(
+        platform="onebot",
+        user_name="alice",
+        platform_id="group:1",
+        message="hi",
+    )
+    assert req.platform == "onebot"
+
+
+def test_message_request_rejects_unknown_platform():
+    with pytest.raises(ValidationError):
+        MessageRequest(
+            platform="qq",  # type: ignore[arg-type]
+            user_name="alice",
+            platform_id="x",
+            message="hi",
+        )
+
+
+def test_message_response_requires_reply_message():
+    with pytest.raises(ValidationError):
+        MessageResponse(
+            platform="client",
+            platform_id="x",
+        )  # type: ignore[call-arg]
+
+
+def test_message_response_full_round_trip():
+    res = MessageResponse(
+        platform="client",
+        platform_id="anonymous",
+        reply_message="hello",
+    )
+    dumped = res.model_dump()
+    assert dumped["reply_message"] == "hello"
+    assert dumped["platform"] == "client"
+
+
+def test_regulatory_node_deps_defaults():
+    deps = RegulatoryNodeDeps(platform="client", user_name="alice", time="now")
+    assert deps.retry_count == 0
+    assert deps.error_history == ""