feat(desktop): embed BoosAPI Desktop client as a subproject

Vendor the rebranded BoosAPI Desktop client (Tauri + Vue) into metapi as
a monorepo subdirectory under desktop/. Source only — node_modules,
dist, Cargo target and the upstream .git history are excluded.

desktop/ keeps its own independent Cargo workspace (desktop/src-tauri
with crates/*); it is not part of the backend boosapi crate, so a
`cargo check` at the metapi root still compiles only the backend. Build
the desktop app from desktop/src-tauri per desktop/README.md.

Note: app icons are still placeholder assets pending the final BoosAPI
logo. The updater signing keys live outside the repo and are not
included.

desktop/libs/stream-monaco/test/getCode.test.ts

@@ -0,0 +1,179 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { createMockWrapper } from './mockWrapper'
+
+/**
+ * 测试 getCode API 功能
+ * 
+ * 这个测试验证了在 updateCode 后调用 getCode 能够获取最新的代码内容
+ */
+describe('getCode API', () => {
+  beforeEach(() => {
+    vi.useFakeTimers()
+    vi.setSystemTime(Date.now())
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  it('should return current code from model', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    // 初始代码为空
+    expect(w.model.getValue()).toBe('')
+    
+    // 更新代码
+    w.updateCode('console.log("hello")')
+    await vi.runAllTimersAsync()
+    
+    // 验证可以获取最新代码
+    expect(w.model.getValue()).toBe('console.log("hello")')
+  })
+
+  it('should return updated code after multiple updates', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    // 第一次更新
+    w.updateCode('const a = 1')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const a = 1')
+    
+    // 第二次更新
+    w.updateCode('const a = 2')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const a = 2')
+    
+    // 第三次更新
+    w.updateCode('const a = 3')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const a = 3')
+  })
+
+  it('should return appended code correctly', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    // 初始代码
+    w.updateCode('const a = 1')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const a = 1')
+    
+    // 追加代码（流式场景）
+    w.updateCode('const a = 1\n')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const a = 1\n')
+    
+    w.updateCode('const a = 1\nconst b = 2')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const a = 1\nconst b = 2')
+  })
+
+  it('should handle streaming updates and return latest code', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    // 模拟流式更新场景
+    w.updateCode('c')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('c')
+    
+    w.updateCode('co')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('co')
+    
+    w.updateCode('con')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('con')
+    
+    w.updateCode('cons')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('cons')
+    
+    w.updateCode('const')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('const')
+  })
+
+  it('should return latest code with rapid updates', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    // 快速连续更新
+    w.updateCode('a')
+    w.updateCode('ab')
+    w.updateCode('abc')
+    w.updateCode('abcd')
+    
+    await vi.runAllTimersAsync()
+    
+    // 应该得到最后一次更新的值
+    expect(w.model.getValue()).toBe('abcd')
+  })
+
+  it('should return code with throttling enabled', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 50 })
+    
+    w.updateCode('initial')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('initial')
+    
+    // 快速更新
+    w.updateCode('updated')
+    
+    // 在节流期内，代码还未更新
+    expect(w.model.getValue()).toBe('initial')
+    
+    // 等待节流时间过去
+    vi.advanceTimersByTime(60)
+    await vi.runAllTimersAsync()
+    
+    // 现在应该更新了
+    expect(w.model.getValue()).toBe('updated')
+  })
+
+  it('should return empty string for empty updates', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    w.updateCode('')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('')
+    
+    w.updateCode('some code')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('some code')
+    
+    // 清空代码
+    w.updateCode('')
+    await vi.runAllTimersAsync()
+    expect(w.model.getValue()).toBe('')
+  })
+
+  it('should handle complex code with special characters', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    const complexCode = `function test() {
+  const str = "Hello, World!";
+  const num = 42;
+  return \`\${str} \${num}\`;
+}`
+    
+    w.updateCode(complexCode)
+    await vi.runAllTimersAsync()
+    
+    expect(w.model.getValue()).toBe(complexCode)
+  })
+
+  it('should return code after incremental append updates', async () => {
+    const w = createMockWrapper({ updateThrottleMs: 0 })
+    
+    // 模拟用户输入或流式生成的场景
+    let code = ''
+    const increments = ['const ', 'x ', '= ', '10', ';']
+    
+    for (const increment of increments) {
+      code += increment
+      w.updateCode(code)
+      await vi.runAllTimersAsync()
+      expect(w.model.getValue()).toBe(code)
+    }
+    
+    expect(w.model.getValue()).toBe('const x = 10;')
+  })
+})