Implements automated workflows for monthly Android SDK updates and continuous deployment to Google Play Store when version numbers change.

Changes

Monthly SDK Bump Workflow (sdk-bump.yml)

• Runs 1st of each month at 00:00 UTC
• Fetches latest Android SDK from Google's repository with fallback
• Updates compileSdkVersion, targetSdkVersion, versionCode, versionName
• Verifies build before creating PR
• Robust version parsing: handles major.minor.patch with fallback for edge cases

Google Play Publishing Workflow (publish-play-store.yml)

• Triggers on app/build.gradle changes in main/master
• Compares versionCode between commits to detect new versions
• Builds signed AAB and publishes to Google Play production track
• Creates GitHub release with version tag
• Requires secrets: ANDROID_KEYSTORE_BASE64, SIGNING_KEY_ALIAS, SIGNING_KEY_PASSWORD, SIGNING_STORE_PASSWORD, GOOGLE_PLAY_SERVICE_ACCOUNT_JSON

Build Configuration

Added conditional signing to app/build.gradle:

signingConfigs {
    release {
        if (System.getenv("SIGNING_KEY_ALIAS")) {
            def keystorePath = System.getenv("GITHUB_WORKSPACE") 
                ? "${System.getenv('GITHUB_WORKSPACE')}/release.keystore"
                : "release.keystore"
            storeFile file(keystorePath)
            storePassword System.getenv("SIGNING_STORE_PASSWORD")
            keyAlias System.getenv("SIGNING_KEY_ALIAS")
            keyPassword System.getenv("SIGNING_KEY_PASSWORD")
        }
    }
}

Documentation

• .github/workflows/README.md: Setup instructions, required secrets, troubleshooting
• Updated main README.md with automation overview

Both workflows support manual triggering via workflow_dispatch. Signing configuration is optional and doesn't break local builds.

• Fixes Automate SDK bump and Play store publish #1

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