test: 前端单测覆盖率Phase2，行覆盖率22%→39.3%

- 新增5个Layout组件测试（AppLayout/Header/MainLayout/PageHead/Sidebar）
- 新增AssetSelector业务组件测试
- 新增~18个页面smoke test（查重系列/任务系列/资源库/音色/订阅/产品等）
- 新增useUndoRedo hook测试 + useAuth测试增强
- 新增config/navigation配置测试 + auth-normalize纯函数测试
- 71个测试文件，420个用例全通过，行覆盖率39.3%

apps/web/src/test/api/auth-normalize.test.ts

@@ -0,0 +1,119 @@
+/**
+ * auth API 纯函数测试
+ * - normalizeUser
+ */
+import { describe, it, expect } from "vitest"
+import { normalizeUser } from "@/api/auth"
+
+describe("normalizeUser", () => {
+  it("应该正确映射标准用户数据", () => {
+    const input = {
+      id: "123",
+      user_id: "123",
+      email: "test@example.com",
+      username: "testuser",
+      display_name: "Test User",
+      is_email_verified: true,
+      email_verified: true,
+      created_at: "2024-01-01T00:00:00Z",
+    }
+
+    const result = normalizeUser(input)
+
+    expect(result.id).toBe("123")
+    expect(result.user_id).toBe("123")
+    expect(result.email).toBe("test@example.com")
+    expect(result.username).toBe("testuser")
+    expect(result.display_name).toBe("Test User")
+    expect(result.is_email_verified).toBe(true)
+    expect(result.email_verified).toBe(true)
+    expect(result.created_at).toBe("2024-01-01T00:00:00Z")
+  })
+
+  it("id 优先于 user_id", () => {
+    const input = {
+      id: "id-from-id",
+      user_id: "id-from-user-id",
+      email: "a@b.com",
+      username: "user",
+    }
+
+    const result = normalizeUser(input)
+    expect(result.id).toBe("id-from-id")
+    expect(result.user_id).toBe("id-from-id")
+  })
+
+  it("没有 id 时使用 user_id", () => {
+    const input = {
+      user_id: "fallback-user-id",
+      email: "a@b.com",
+      username: "user",
+    }
+
+    const result = normalizeUser(input as any)
+    expect(result.id).toBe("fallback-user-id")
+    expect(result.user_id).toBe("fallback-user-id")
+  })
+
+  it("id 和 user_id 都没有时返回空字符串", () => {
+    const input = {
+      email: "a@b.com",
+      username: "user",
+    }
+
+    const result = normalizeUser(input as any)
+    expect(result.id).toBe("")
+    expect(result.user_id).toBe("")
+  })
+
+  it("is_email_verified 优先于 email_verified", () => {
+    const input = {
+      id: "1",
+      email: "a@b.com",
+      username: "user",
+      is_email_verified: true,
+      email_verified: false,
+    }
+
+    const result = normalizeUser(input)
+    expect(result.is_email_verified).toBe(true)
+    expect(result.email_verified).toBe(true)
+  })
+
+  it("没有 is_email_verified 时使用 email_verified", () => {
+    const input = {
+      id: "1",
+      email: "a@b.com",
+      username: "user",
+      email_verified: true,
+    }
+
+    const result = normalizeUser(input as any)
+    expect(result.is_email_verified).toBe(true)
+    expect(result.email_verified).toBe(true)
+  })
+
+  it("两个都没有时默认为 false", () => {
+    const input = {
+      id: "1",
+      email: "a@b.com",
+      username: "user",
+    }
+
+    const result = normalizeUser(input as any)
+    expect(result.is_email_verified).toBe(false)
+    expect(result.email_verified).toBe(false)
+  })
+
+  it("缺失可选字段时返回 undefined", () => {
+    const input = {
+      id: "1",
+      email: "a@b.com",
+      username: "user",
+    }
+
+    const result = normalizeUser(input as any)
+    expect(result.display_name).toBeUndefined()
+    expect(result.created_at).toBeUndefined()
+  })
+})