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/markstream-react/src/server.ts

@@ -0,0 +1,62 @@
+export type { HtmlPreviewFrameProps } from './components/CodeBlockNode/HtmlPreviewFrame'
+export type { LinkNodeStyleProps } from './components/LinkNode/LinkNode'
+export type { ListItemNodeProps } from './components/ListItemNode/ListItemNode'
+export type { MarkdownCodeBlockNodeProps } from './components/MarkdownCodeBlockNode/MarkdownCodeBlockNode'
+export type { TooltipPlacement, TooltipProps } from './components/Tooltip/Tooltip'
+export {
+  clearGlobalCustomComponents,
+  getCustomComponentDisplay,
+  getCustomNodeComponents,
+  removeCustomComponents,
+  setCustomComponents,
+  withMarkstreamComponentDisplay,
+} from './customComponents'
+export type { CustomComponentDisplayMode, MarkstreamCustomComponent } from './customComponents'
+export { AdmonitionNode } from './server-renderer'
+export { BlockquoteNode } from './server-renderer'
+export { CheckboxNode } from './server-renderer'
+export { CodeBlockNode } from './server-renderer'
+export { CodeBlockNode as ReactCodeBlockNode } from './server-renderer'
+export { HtmlPreviewFrame } from './server-renderer'
+export { D2BlockNode } from './server-renderer'
+export { DefinitionListNode } from './server-renderer'
+export { EmojiNode } from './server-renderer'
+export { EmphasisNode } from './server-renderer'
+export { FootnoteAnchorNode } from './server-renderer'
+export { FootnoteNode } from './server-renderer'
+export { FootnoteReferenceNode } from './server-renderer'
+export { HardBreakNode } from './server-renderer'
+export { HeadingNode } from './server-renderer'
+export { HighlightNode } from './server-renderer'
+export { HtmlBlockNode } from './server-renderer'
+export { HtmlInlineNode } from './server-renderer'
+export { ImageNode } from './server-renderer'
+export { InfographicBlockNode } from './server-renderer'
+export { InlineCodeNode } from './server-renderer'
+export { InsertNode } from './server-renderer'
+export { LinkNode } from './server-renderer'
+export { ListItemNode } from './server-renderer'
+export { ListNode } from './server-renderer'
+export { MarkdownCodeBlockNode } from './server-renderer'
+export { MathBlockNode } from './server-renderer'
+export { MathInlineNode } from './server-renderer'
+export { MermaidBlockNode } from './server-renderer'
+export { NodeRenderer } from './server-renderer'
+export { default } from './server-renderer'
+export { FallbackComponent } from './server-renderer'
+export { ParagraphNode } from './server-renderer'
+export { PreCodeNode } from './server-renderer'
+export { ReferenceNode } from './server-renderer'
+export { StrikethroughNode } from './server-renderer'
+export { StrongNode } from './server-renderer'
+export { SubscriptNode } from './server-renderer'
+export { SuperscriptNode } from './server-renderer'
+export { TableNode } from './server-renderer'
+export { TextNode } from './server-renderer'
+export { ThematicBreakNode } from './server-renderer'
+export { Tooltip } from './server-renderer'
+export { VmrContainerNode } from './server-renderer'
+export { renderNode } from './server-renderer'
+export type { NodeRendererCodeBlockProps, NodeRendererProps } from './types'
+export * from './types/component-props'
+export type { NodeComponentProps } from './types/node-component'