refactor(desktop): move markdown rendering to rust (#10000)

packages/app/src/context/platform.tsx

@@ -46,6 +46,9 @@ export type Platform = {
 
   /** Set the default server URL to use on app startup (desktop only) */
   setDefaultServerUrl?(url: string | null): Promise<void>
+
+  /** Parse markdown to HTML using native parser (desktop only, returns unprocessed code blocks) */
+  parseMarkdown?(markdown: string): Promise<string>
 }
 
 export const { use: usePlatform, provider: PlatformProvider } = createSimpleContext({