refactor: RBAC权限系统重构 + UI组件拆分 + 测试修复 + 架构文档

- RBAC: 新增30个权限点、DataScope行级权限、requirePermission守卫，所有57+ Server Action接入权限校验
- UI拆分: exam-form(1623行→11文件)、textbook-reader(744行→7文件)，均降至300行以内
- 测试: 新增5个单元测试文件(19用例)，修复4个集成测试文件(38用例全部通过)
- 架构文档: 新增架构影响地图(004/005)、标准功能清单(006)、差距审计报告(007)
- 项目规则: 架构图优先规则，改码必同步图
- 安全: rehype-sanitize净化、AES加密API Key、权限路由守卫
- 无障碍: skip-link、aria-label、prefers-reduced-motion
- 性能: next/font优化、next/image、代码分割

src/mocks/question-data.ts

@@ -0,0 +1,124 @@
+import { Question } from "../modules/questions/types";
+
+export const MOCK_QUESTIONS: Question[] = [
+  {
+    id: "q-001",
+    content: "What is the capital of France?",
+    type: "single_choice",
+    difficulty: 1,
+    createdAt: new Date("2023-11-01"),
+    updatedAt: new Date("2023-11-01"),
+    author: { id: "u-1", name: "Alice Teacher", image: null },
+    knowledgePoints: [{ id: "kp-1", name: "Geography" }, { id: "kp-2", name: "Europe" }],
+  },
+  {
+    id: "q-002",
+    content: "Explain the theory of relativity in simple terms.",
+    type: "text",
+    difficulty: 5,
+    createdAt: new Date("2023-11-02"),
+    updatedAt: new Date("2023-11-02"),
+    author: { id: "u-2", name: "Bob Physicist", image: null },
+    knowledgePoints: [{ id: "kp-3", name: "Physics" }],
+  },
+  {
+    id: "q-003",
+    content: "True or False: The earth is flat.",
+    type: "judgment",
+    difficulty: 1,
+    createdAt: new Date("2023-11-03"),
+    updatedAt: new Date("2023-11-03"),
+    author: { id: "u-1", name: "Alice Teacher", image: null },
+    knowledgePoints: [{ id: "kp-1", name: "Geography" }],
+  },
+  {
+    id: "q-004",
+    content: "Select all prime numbers below 10.",
+    type: "multiple_choice",
+    difficulty: 2,
+    createdAt: new Date("2023-11-04"),
+    updatedAt: new Date("2023-11-04"),
+    author: { id: "u-3", name: "Charlie Math", image: null },
+    knowledgePoints: [{ id: "kp-4", name: "Math" }],
+  },
+  {
+    id: "q-005",
+    content: "Write a function to reverse a string in JavaScript.",
+    type: "text",
+    difficulty: 3,
+    createdAt: new Date("2023-11-05"),
+    updatedAt: new Date("2023-11-05"),
+    author: { id: "u-4", name: "Dave Coder", image: null },
+    knowledgePoints: [{ id: "kp-5", name: "Programming" }, { id: "kp-6", name: "JavaScript" }],
+  },
+  {
+    id: "q-006",
+    content: "Which of the following are fruits? (Apple, Carrot, Banana, Potato)",
+    type: "multiple_choice",
+    difficulty: 1,
+    createdAt: new Date("2023-11-06"),
+    updatedAt: new Date("2023-11-06"),
+    author: { id: "u-1", name: "Alice Teacher", image: null },
+    knowledgePoints: [{ id: "kp-7", name: "Biology" }],
+  },
+  {
+    id: "q-007",
+    content: "Water boils at 100 degrees Celsius at sea level.",
+    type: "judgment",
+    difficulty: 2,
+    createdAt: new Date("2023-11-07"),
+    updatedAt: new Date("2023-11-07"),
+    author: { id: "u-2", name: "Bob Physicist", image: null },
+    knowledgePoints: [{ id: "kp-3", name: "Physics" }],
+  },
+  {
+    id: "q-008",
+    content: "What is the powerhouse of the cell?",
+    type: "single_choice",
+    difficulty: 2,
+    createdAt: new Date("2023-11-08"),
+    updatedAt: new Date("2023-11-08"),
+    author: { id: "u-5", name: "Eve Biologist", image: null },
+    knowledgePoints: [{ id: "kp-7", name: "Biology" }],
+  },
+  {
+    id: "q-009",
+    content: "Solve for x: 2x + 5 = 15",
+    type: "single_choice",
+    difficulty: 2,
+    createdAt: new Date("2023-11-09"),
+    updatedAt: new Date("2023-11-09"),
+    author: { id: "u-3", name: "Charlie Math", image: null },
+    knowledgePoints: [{ id: "kp-4", name: "Math" }],
+  },
+  {
+    id: "q-010",
+    content: "Describe the impact of the Industrial Revolution.",
+    type: "text",
+    difficulty: 4,
+    createdAt: new Date("2023-11-10"),
+    updatedAt: new Date("2023-11-10"),
+    author: { id: "u-6", name: "Frank Historian", image: null },
+    knowledgePoints: [{ id: "kp-8", name: "History" }],
+  },
+  {
+    id: "q-011",
+    content: "Light travels faster than sound.",
+    type: "judgment",
+    difficulty: 1,
+    createdAt: new Date("2023-11-11"),
+    updatedAt: new Date("2023-11-11"),
+    author: { id: "u-2", name: "Bob Physicist", image: null },
+    knowledgePoints: [{ id: "kp-3", name: "Physics" }],
+  },
+  {
+    id: "q-012",
+    content: "Which element has the chemical symbol 'O'?",
+    type: "single_choice",
+    difficulty: 1,
+    createdAt: new Date("2023-11-12"),
+    updatedAt: new Date("2023-11-12"),
+    author: { id: "u-7", name: "Grace Chemist", image: null },
+    knowledgePoints: [{ id: "kp-9", name: "Chemistry" }],
+  },
+];