Add release tooling and generated launcher icon

README.md

@@ -75,9 +75,28 @@ The project is a standard Gradle Android project:
 ./gradlew assembleDebug
 ```
 
-For local release builds, `build.sh` uses the Android SDK and JDK available on
-the machine, writes `local.properties`, builds a release APK, and copies it to a
-local sync folder if present.
+Release builds require local signing configuration:
+
+```bash
+./gradlew assembleRelease
+```
+
+## Releases
+
+Public releases use two-part versions such as `0.1`, `0.2`, and eventually
+`1.0`.
+
+Gitea automatically provides source archives for release tags, so the release
+assets only need the APK and its checksum. A release can be created with:
+
+```bash
+mkdir -p local
+printf '%s' 'your-gitea-token' > local/gitea-token
+
+GITEA_BASE_URL=git.ajpanton.se \
+GITEA_TOKEN_FILE=local/gitea-token \
+scripts/release-gitea.sh 0.1
+```
 
 ## Development Note