feat(phase6): 测试补全 + 集成测试 + repository 落地示范

- tests/unit/modules/test_repository.py：base_repository 在 SQLite 内存库的 CRUD 测试
- tests/integration/api/test_smoke.py：登录链路 / 只读接口 / 未授权拦截（标记 integration，默认跳过）
- conftest 提供 sqlite_db（隔离 DB）与 app/client/admin_headers（集成）fixture
- pytest.ini 默认跳过 integration，Makefile test-integration 可显式运行
- 修复 base_repository.get_by_id/get_by_ids 对字符串 ID 的兼容（URL 路径参数）
- 示范 modules/system/level service 改用 level_repo，CRUD 全链路实测通过

Co-Authored-By: Claude <noreply@anthropic.com>

tests/integration/api/test_smoke.py

@@ -0,0 +1,46 @@
+"""集成冒烟测试：登录链路 + 各模块只读接口（需 MySQL/Redis 运行，默认跳过）。"""
+
+import pytest
+
+pytestmark = pytest.mark.integration
+
+
+@pytest.mark.asyncio
+async def test_login_flow(client):
+    """完整登录链路：/captcha → 解析验证码 → /login 获取 token。"""
+    import redis as redis_lib
+
+    from config import REDIS_INDEX
+
+    r = await client.get("/captcha")
+    body = r.json()
+    assert body["code"] == 0
+    idkey = body.get("idkey")
+    assert idkey
+
+    # 从 Redis 读取验证码明文
+    redis_client = redis_lib.Redis(db=REDIS_INDEX)
+    code = redis_client.get(idkey).decode()
+
+    resp = await client.post("/login", json={
+        "username": "admin", "password": "123456",
+        "captcha": code, "idKey": idkey,
+    })
+    login = resp.json()
+    assert login["code"] == 0
+    assert login["data"]["access_token"]
+
+
+@pytest.mark.asyncio
+async def test_admin_read_endpoints(client, admin_headers):
+    """管理员 token 可访问代表性只读接口。"""
+    for path in ("/user/page", "/dept/list", "/menu/list", "/index/menu", "/job/page"):
+        resp = await client.get(path, headers=admin_headers)
+        assert resp.json()["code"] == 0, f"{path} failed"
+
+
+@pytest.mark.asyncio
+async def test_unauthorized_blocked(client):
+    """无 token 访问受保护接口应返回 401。"""
+    resp = await client.get("/user/page")
+    assert resp.json()["code"] == 401