App Store Connect requires CFBundleVersion to be unique and strictly
increasing app-wide. latest_testflight_build_number could return a stale
value (it missed an existing build 13) and produced colliding build
numbers, 409-ing every upload. Use the monotonic Gitea run number
(github.run_number -> SYBIL_BUILD_NUMBER) instead.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Replace the old testflight-release workflow with a single
`testflight.yml` Gitea Actions workflow and rework the fastlane `beta`
lane: match-based app-store signing into a disposable CI keychain,
XcodeGen project generation, version/build-number bumping, and upload
to TestFlight. Pin Ruby to 3.1.7 for the runner.
Squashes the iterative CI signing debugging history into one commit.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
