fix(release): include mobile package in release smoke scaffold

The release smoke test creates a temp workspace to validate the
version bump script. It was missing apps/mobile/package.json after
mobile was added to the release package list.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: BunsDev

scripts/release-smoke.ts

@@ -12,6 +12,7 @@ const workspaceFiles = [
   "apps/server/package.json",
   "apps/desktop/package.json",
   "apps/web/package.json",
+  "apps/mobile/package.json",
   "apps/marketing/package.json",
   "packages/contracts/package.json",
   "packages/shared/package.json",