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_api_health.py

@@ -0,0 +1,81 @@
+"""``api/health.py`` 健康探针端点。"""
+
+from __future__ import annotations
+
+import types
+from unittest.mock import AsyncMock
+
+import pytest
+from fastapi import FastAPI
+from httpx import AsyncClient, ASGITransport
+
+from kilostar.api.health import health_router
+
+
+@pytest.fixture
+def health_app() -> FastAPI:
+    app = FastAPI()
+    app.include_router(health_router)
+    return app
+
+
+@pytest.mark.asyncio
+async def test_liveness_returns_alive(health_app):
+    transport = ASGITransport(app=health_app)
+    async with AsyncClient(transport=transport, base_url="http://test") as client:
+        resp = await client.get("/health/live")
+    assert resp.status_code == 200
+    assert resp.json() == {"status": "alive"}
+
+
+@pytest.mark.asyncio
+async def test_readiness_all_ok(health_app, fake_actors):
+    pg = types.SimpleNamespace()
+    pg.ping = types.SimpleNamespace(remote=AsyncMock(return_value=True))
+    fake_actors.register("postgres_database", pg)
+
+    gsm = types.SimpleNamespace()
+    gsm.get_skill_list = types.SimpleNamespace(remote=AsyncMock(return_value=[]))
+    fake_actors.register("global_state_machine", gsm)
+
+    transport = ASGITransport(app=health_app)
+    async with AsyncClient(transport=transport, base_url="http://test") as client:
+        resp = await client.get("/health/ready")
+
+    assert resp.status_code == 200
+    body = resp.json()
+    assert body["status"] == "ready"
+    assert body["checks"] == {"postgres": True, "global_state_machine": True}
+
+
+@pytest.mark.asyncio
+async def test_readiness_postgres_down(health_app, fake_actors):
+    pg = types.SimpleNamespace()
+    pg.ping = types.SimpleNamespace(
+        remote=AsyncMock(side_effect=RuntimeError("db down"))
+    )
+    fake_actors.register("postgres_database", pg)
+
+    gsm = types.SimpleNamespace()
+    gsm.get_skill_list = types.SimpleNamespace(remote=AsyncMock(return_value=[]))
+    fake_actors.register("global_state_machine", gsm)
+
+    transport = ASGITransport(app=health_app)
+    async with AsyncClient(transport=transport, base_url="http://test") as client:
+        resp = await client.get("/health/ready")
+
+    assert resp.status_code == 503
+    body = resp.json()
+    assert body["status"] == "not_ready"
+    assert body["checks"]["postgres"] is False
+    assert body["checks"]["global_state_machine"] is True
+
+
+@pytest.mark.asyncio
+async def test_readiness_actor_not_registered(health_app, fake_actors):
+    transport = ASGITransport(app=health_app)
+    async with AsyncClient(transport=transport, base_url="http://test") as client:
+        resp = await client.get("/health/ready")
+
+    assert resp.status_code == 503
+    assert resp.json()["status"] == "not_ready"