Implement operator login service and fix static root

Data/Engine/tests/test_operator_auth_builders.py

@@ -0,0 +1,63 @@
+"""Tests for operator authentication builders."""
+
+from __future__ import annotations
+
+import pytest
+
+from Data.Engine.builders import (
+    OperatorLoginRequest,
+    OperatorMFAVerificationRequest,
+    build_login_request,
+    build_mfa_request,
+)
+
+
+def test_build_login_request_uses_explicit_hash():
+    payload = {"username": "Admin", "password_sha512": "abc123"}
+
+    result = build_login_request(payload)
+
+    assert isinstance(result, OperatorLoginRequest)
+    assert result.username == "Admin"
+    assert result.password_sha512 == "abc123"
+
+
+def test_build_login_request_hashes_plain_password():
+    payload = {"username": "user", "password": "secret"}
+
+    result = build_login_request(payload)
+
+    assert isinstance(result, OperatorLoginRequest)
+    assert result.username == "user"
+    assert result.password_sha512
+    assert result.password_sha512 != "secret"
+
+
+@pytest.mark.parametrize(
+    "payload",
+    [
+        {"password": "secret"},
+        {"username": ""},
+        {"username": "user"},
+    ],
+)
+def test_build_login_request_validation(payload):
+    with pytest.raises(ValueError):
+        build_login_request(payload)
+
+
+def test_build_mfa_request_normalizes_code():
+    payload = {"pending_token": "token", "code": "12 34-56"}
+
+    result = build_mfa_request(payload)
+
+    assert isinstance(result, OperatorMFAVerificationRequest)
+    assert result.pending_token == "token"
+    assert result.code == "123456"
+
+
+def test_build_mfa_request_requires_token_and_code():
+    with pytest.raises(ValueError):
+        build_mfa_request({"code": "123"})
+    with pytest.raises(ValueError):
+        build_mfa_request({"pending_token": "token", "code": "12"})