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/markstream-vue/packages/markdown-parser/test/parse-link-with-code.test.ts

@@ -0,0 +1,45 @@
+import { describe, expect, it } from 'vitest'
+import { getMarkdown, parseMarkdownToStructure } from '../src'
+
+describe('parseMarkdownToStructure with code in link text', () => {
+  it('should parse links with inline code correctly', () => {
+    const md = getMarkdown()
+
+    const mdText1 = `the [\`npm init\` command](https://docs.npmjs.com/creating-a-package-json-file).`
+    const result1 = parseMarkdownToStructure(mdText1, md, { final: true })
+    // 验证结果的基本结构
+    expect(result1).toBeDefined()
+    expect(result1.length).toBe(1)
+    expect(result1[0].type).toBe('paragraph')
+    expect(result1[0].children.length).toBe(3)
+
+    // 验证链接节点
+    const linkNode1 = result1[0].children[1]
+    expect(linkNode1.type).toBe('link')
+    expect(linkNode1.href).toBe('https://docs.npmjs.com/creating-a-package-json-file')
+    expect(linkNode1.text).toBe('npm init command')
+    expect(linkNode1.children.length).toBe(2)
+
+    // 验证链接中的内联代码节点
+    expect(linkNode1.children[0].type).toBe('inline_code')
+    expect(linkNode1.children[0].code).toBe('npm init')
+    expect(linkNode1.children[1].type).toBe('text')
+    expect(linkNode1.children[1].content).toBe(' command')
+
+    // 验证第二个链接
+    const mdText2 = `[\`npm install\` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):`
+    const result2 = parseMarkdownToStructure(mdText2, md, { final: true })
+
+    expect(result2.length).toBe(1)
+    const linkNode2 = result2[0].children[0]
+    expect(linkNode2.type).toBe('link')
+    expect(linkNode2.href).toBe('https://docs.npmjs.com/getting-started/installing-npm-packages-locally')
+    expect(linkNode2.text).toBe('npm install command')
+    expect(linkNode2.children.length).toBe(2)
+
+    expect(linkNode2.children[0].type).toBe('inline_code')
+    expect(linkNode2.children[0].code).toBe('npm install')
+    expect(linkNode2.children[1].type).toBe('text')
+    expect(linkNode2.children[1].content).toBe(' command')
+  })
+})