refactor: 将Data到ViewModel的转换由App转移至Server端

- 将逻辑转移到Server端后，简化前端逻辑

server/mappers/solutionMapper.test.ts

@@ -0,0 +1,100 @@
+import { describe, test, expect } from 'vitest';
+import { toSolutionListView, toSolutionView } from './solutionMapper';
+
+/**
+ * 单元测试: toSolutionListView
+ */
+describe('toSolutionListView', () => {
+  const baseData: Solution = {
+    id: 1,
+    translations: [
+      { id: 1, title: 'Solution Title', summary: 'Solution Summary' },
+    ],
+    type: {
+      id: 1,
+      translations: [{ id: 1, name: 'Type Name' }],
+      sort: 1,
+    },
+  };
+  test('convert raw data to SolutionListView correctly', () => {
+    const rawData: Solution = { ...baseData };
+
+    expect(toSolutionListView(rawData)).toEqual({
+      id: 1,
+      title: 'Solution Title',
+      summary: 'Solution Summary',
+      solution_type: {
+        id: 1,
+        name: 'Type Name',
+        sort: 1,
+      },
+      cover: '',
+    });
+  });
+
+  test('convert raw data with missing translations', () => {
+    const rawData: Solution = {
+      ...baseData,
+      translations: [],
+    };
+
+    expect(toSolutionListView(rawData)).toEqual({
+      id: 1,
+      title: '',
+      summary: '',
+      solution_type: {
+        id: 1,
+        name: 'Type Name',
+        sort: 1,
+      },
+      cover: '',
+    });
+  });
+});
+
+/**
+ * 单元测试: toSolutionView
+ */
+describe('toSolutionView', () => {
+  const baseData: Solution = {
+    id: 1,
+    translations: [
+      {
+        id: 1,
+        title: 'Solution Title',
+        summary: 'Solution Summary',
+        content: 'Solution Content',
+      },
+    ],
+    create_at: '2023-01-01T00:00:00Z',
+  };
+
+  test('convert raw data to SolutionView correctly', () => {
+    const rawData: Solution = {
+      ...baseData,
+    };
+
+    expect(toSolutionView(rawData)).toEqual({
+      id: 1,
+      title: 'Solution Title',
+      summary: 'Solution Summary',
+      content: 'Solution Content',
+      createAt: '2023-01-01T00:00:00Z',
+    });
+  });
+
+  test('convert raw data with missing translations', () => {
+    const rawData: Solution = {
+      ...baseData,
+      translations: [],
+    };
+
+    expect(toSolutionView(rawData)).toEqual({
+      id: 1,
+      title: '',
+      summary: '',
+      content: '',
+      createAt: '2023-01-01T00:00:00Z',
+    });
+  });
+});