chore: add automated release script (macOS → GitLab + iOS → TestFlight)
scripts/release.sh builds, notarizes and publishes the macOS app to a GitLab Release (notes from the CHANGELOG), and optionally archives + uploads the iOS build to TestFlight when App Store Connect API keys are configured. Secrets live in scripts/release.env (gitignored); never printed.
Co-Authored-By:
Claude <claude@anthropic.com>