Set up Gitea TestFlight deployment

README.md

@@ -4,6 +4,27 @@ QueueCube is a web frontend for [mpv](https://github.com/mpv-player/mpv).
 
 It allows you to remotely manage mpv's playqueue as well as the ability to search YouTube via a locally running [Invidious](https://github.com/iv-org/invidious) instance. 
 
+## iOS TestFlight releases
+
+Gitea Actions builds and uploads the iOS app when a version tag is pushed. The
+workflow accepts the repository's existing numeric tags (for example `3.2`),
+`v3.2`, and `release/ios/v3.2`; it can also be started manually.
+
+Configure these Gitea Actions secrets before the first run:
+
+- `APP_STORE_CONNECT_KEY_ID`
+- `APP_STORE_CONNECT_ISSUER_ID`
+- `APP_STORE_CONNECT_KEY_CONTENT`
+- `MATCH_GIT_URL`
+- `MATCH_PASSWORD`
+- `MATCH_GIT_BASIC_AUTHORIZATION`
+
+For local Fastlane use, copy `.env.example` to `.env` and fill in the same
+values. Run `bundle exec fastlane ios setup_signing` only when the match signing
+assets need to be created or updated. `bundle exec fastlane ios build` creates
+a signed IPA without uploading it, while `bundle exec fastlane ios beta`
+performs the release.
+
 ![queuecube user interface](screenshots/queuecube.png)
 
 ## Running