fix(desktop): restore a valid package name so the workspace filter resolves

The package name must be a valid npm/pnpm workspace name; the display name
belongs in electron-builder productName. The invalid rename broke
pnpm --filter @deepseek-ai/dsh-desktop in desktop:dev.

Co-Authored-By: Claude <noreply@anthropic.com>

apps/desktop/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-desktop",
-  "description": "Electron desktop shell over the dsh harness: spawns the `web` profile on loopback and opens the GUI in a native window.",
+  "description": "DeepSeek Harness Desktop ,由 PineSound 基于 deepseek-harness 项目构建",
   "version": "0.1.0-rc.5",
   "private": true,
   "type": "module",