feat: phase 5 distribution — tauri shell, pwa, desktop release artifacts

- apps/desktop: Tauri 2 thin shell; connect screen stores the deployment
  URL, webview renders the remote console, tray with Show/Change Server/
  Quit, close-to-tray, single-instance
- frontend: vite-plugin-pwa generates manifest + Workbox SW (shell
  precache, /api /auth /mailpit NetworkOnly), install banner on
  beforeinstallprompt, rasterized PWA icons
- release.yml: desktop bundle matrix (linux/macos/windows) attached to
  GitHub Releases
- workspace 0.5.0; Dockerfiles copy the desktop workspace manifest

Authored By: TDvorak <[email protected]>

apps/auth/Dockerfile

@@ -4,6 +4,7 @@ WORKDIR /workspace
 COPY package.json package-lock.json tsconfig.base.json ./
 COPY apps/auth/package.json ./apps/auth/package.json
 COPY apps/cli/package.json ./apps/cli/package.json
+COPY apps/desktop/package.json ./apps/desktop/package.json
 COPY apps/frontend/package.json ./apps/frontend/package.json
 COPY apps/mcp/package.json ./apps/mcp/package.json
 COPY packages/api-client/package.json ./packages/api-client/package.json

apps/auth/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@primora/auth",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "private": true,
   "type": "module",
   "scripts": {