feat: 项目重命名 SQL-Platform + 数据源表单重写(连接模式/流程/排除DB/脱敏)

- 项目名称 Web-Lite Pro → SQL-Platform 全局替换(13处)
- Instance 模型新增: access_mode, workflow, excluded_databases, mask_fields
- 创建数据源表单: 分区卡片(数据源信息/连接模式/流程/高级配置)
- 后端 JSON 字段序列化/反序列化
- 新增 5 个 Instance 字段测试 (133 total)

backend/tests/test_instance_fields.py

@@ -0,0 +1,124 @@
+"""测试 Instance 新增字段：access_mode, workflow, excluded_databases, mask_fields"""
+import pytest
+from tests.conftest import auth_header
+
+
+@pytest.mark.asyncio
+async def test_create_instance_with_full_fields(client, admin_token):
+    """创建数据源：完整字段"""
+    res = await client.post("/api/v1/instances", json={
+        "name": "pro-cex-rds-只读库",
+        "db_type": "mysql",
+        "host": "pro-rds-ro.51aipay.com",
+        "port": 3306,
+        "username": "admin",
+        "password": "secret123",
+        "env": "production",
+        "access_mode": "read",
+        "workflow": [
+            {"stage": "提交阶段", "role": "提交人", "assignee": ""},
+            {"stage": "开发负责人", "role": "开发负责人", "assignee": "lairdlandonloose"},
+            {"stage": "执行人", "role": "执行人", "assignee": "zachlogan"},
+        ],
+        "excluded_databases": ["sys", "information_schema", "mysql"],
+        "mask_fields": [
+            {"table": "users", "field": "phone", "rule": "mask"},
+            {"table": "users", "field": "id_card", "rule": "hide"},
+        ],
+    }, headers=auth_header(admin_token))
+    assert res.status_code == 201
+    data = res.json()
+    assert data["access_mode"] == "read"
+    assert data["workflow"] is not None
+    assert len(data["workflow"]) == 3
+    assert data["workflow"][1]["assignee"] == "lairdlandonloose"
+    assert data["excluded_databases"] == ["sys", "information_schema", "mysql"]
+    assert len(data["mask_fields"]) == 2
+    assert data["mask_fields"][0]["table"] == "users"
+
+
+@pytest.mark.asyncio
+async def test_create_instance_default_access_mode(client, admin_token):
+    """默认连接模式为 readwrite"""
+    res = await client.post("/api/v1/instances", json={
+        "name": "test-default",
+        "db_type": "mysql",
+        "host": "127.0.0.1",
+        "port": 3306,
+        "username": "root",
+        "password": "test123",
+    }, headers=auth_header(admin_token))
+    assert res.status_code == 201
+    assert res.json()["access_mode"] == "readwrite"
+
+
+@pytest.mark.asyncio
+async def test_list_instance_includes_new_fields(client, admin_token):
+    """列表接口返回新字段"""
+    # 创建
+    await client.post("/api/v1/instances", json={
+        "name": "list-test",
+        "db_type": "postgres",
+        "host": "10.0.0.1",
+        "port": 5432,
+        "username": "postgres",
+        "password": "pwd",
+        "access_mode": "write",
+        "workflow": [{"stage": "审批", "role": "DBA", "assignee": "alice"}],
+    }, headers=auth_header(admin_token))
+
+    res = await client.get("/api/v1/instances", headers=auth_header(admin_token))
+    assert res.status_code == 200
+    items = res.json()
+    found = [i for i in items if i["name"] == "list-test"]
+    assert len(found) == 1
+    assert found[0]["access_mode"] == "write"
+    assert found[0]["workflow"] is not None
+    assert found[0]["workflow"][0]["assignee"] == "alice"
+
+
+@pytest.mark.asyncio
+async def test_update_instance_workflow(client, admin_token):
+    """更新流程配置"""
+    create = await client.post("/api/v1/instances", json={
+        "name": "update-wf",
+        "db_type": "mysql",
+        "host": "127.0.0.1",
+        "port": 3306,
+        "username": "root",
+        "password": "test",
+    }, headers=auth_header(admin_token))
+    iid = create.json()["id"]
+
+    res = await client.put(f"/api/v1/instances/{iid}", json={
+        "workflow": [
+            {"stage": "提交", "role": "提交人", "assignee": "bob"},
+            {"stage": "审核", "role": "DBA", "assignee": "alice"},
+            {"stage": "执行", "role": "DBA", "assignee": "charlie"},
+        ],
+        "access_mode": "read",
+        "excluded_databases": ["test_db"],
+    }, headers=auth_header(admin_token))
+    assert res.status_code == 200
+    data = res.json()
+    assert len(data["workflow"]) == 3
+    assert data["access_mode"] == "read"
+    assert data["excluded_databases"] == ["test_db"]
+
+
+@pytest.mark.asyncio
+async def test_instance_null_json_fields(client, admin_token):
+    """不传新字段时，返回 null"""
+    res = await client.post("/api/v1/instances", json={
+        "name": "minimal",
+        "db_type": "mysql",
+        "host": "127.0.0.1",
+        "port": 3306,
+        "username": "root",
+        "password": "test",
+    }, headers=auth_header(admin_token))
+    assert res.status_code == 201
+    data = res.json()
+    assert data["workflow"] is None
+    assert data["excluded_databases"] is None
+    assert data["mask_fields"] is None