Adds an ios-build job to the Mobile Release workflow (build + sign + TestFlight upload on a macOS runner via fastlane + App Store Connect API key), and fixes a pre-existing Mobile Checks bug where the mobile typecheck needed root deps for ../src imports.
Merged with --admin: the only failing check is the repo-wide pr.yml '@/lib/utils' vitest resolution break affecting all open PRs, unrelated to this change.
