fix: use linux-x86_64 runner label

fastlane metadata, CI workflow

.github/workflows/release.yml

@@ -0,0 +1,55 @@
+name: Release APK
+
+on:
+  push:
+    tags: ["v*"]
+
+jobs:
+  build:
+    runs-on: linux-x86_64
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "17"
+
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: "stable"
+          cache: true
+
+      - name: Extract version code from pubspec
+        run: |
+          VERSION=$(grep '^version:' pubspec.yaml | sed 's/version: //')
+          VERSION_CODE=$(echo "$VERSION" | grep -oP '(?<=\+)\d+')
+          VERSION_NAME=$(echo "$VERSION" | grep -oP '^[^+]+')
+          echo "VERSION_CODE=$VERSION_CODE" >> $GITHUB_ENV
+          echo "VERSION_NAME=$VERSION_NAME" >> $GITHUB_ENV
+
+      - name: Decode keystore
+        run: |
+          echo "${{ secrets.KEYSTORE_BASE64 }}" | base64 -d > android/app/kirakira-release.jks
+          echo "KEYSTORE_PATH=$GITHUB_WORKSPACE/android/app/kirakira-release.jks" >> $GITHUB_ENV
+
+      - name: Build release APK (prod flavor)
+        env:
+          STORE_PASSWORD: ${{ secrets.STORE_PASSWORD }}
+          KEY_ALIAS:      ${{ secrets.KEY_ALIAS }}
+          KEY_PASSWORD:   ${{ secrets.KEY_PASSWORD }}
+        run: flutter build apk --release --flavor prod
+
+      - name: Rename APK
+        run: |
+          cp build/app/outputs/flutter-apk/app-prod-release.apk \
+             "kirakira-${{ env.VERSION_NAME }}.apk"
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: kirakira-*.apk
+          body_path: fastlane/metadata/android/en-US/changelogs/${{ env.VERSION_CODE }}.txt
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

android/app/build.gradle.kts

@@ -19,6 +19,15 @@ android {
         jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
+    signingConfigs {
+        create("release") {
+            storeFile     = file(System.getenv("KEYSTORE_PATH") ?: "debug.jks")
+            storePassword = System.getenv("STORE_PASSWORD") ?: ""
+            keyAlias      = System.getenv("KEY_ALIAS")      ?: ""
+            keyPassword   = System.getenv("KEY_PASSWORD")   ?: ""
+        }
+    }
+
     defaultConfig {
         applicationId = "com.app.smol_mail"
         minSdk = flutter.minSdkVersion
@@ -55,8 +64,11 @@ android {
 
     buildTypes {
         release {
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig = signingConfigs.getByName("debug")
+            signingConfig = signingConfigs.getByName(
+                if (System.getenv("KEYSTORE_PATH") != null) "release" else "debug"
+            )
+            isMinifyEnabled = true
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
         }
     }
 }

fastlane/Fastfile

@@ -0,0 +1 @@
+default_platform(:android)

fastlane/metadata/android/en-US/changelogs/1.txt

@@ -0,0 +1 @@
+Initial release.

fastlane/metadata/android/en-US/full_description.txt

@@ -0,0 +1,8 @@
+kirakira is a client for the smol:// mail protocol — a minimalist, end-to-end encrypted messaging system designed for simplicity and privacy.
+
+Features:
+• End-to-end encryption via the smolmail protocol
+• QR code identity sharing
+• Deep link support for smol:// URIs
+• Dark mode support
+• No accounts, no servers you don't control

fastlane/metadata/android/en-US/short_description.txt

@@ -0,0 +1 @@
+Smol Mail client — minimalist end-to-end encrypted messaging

fastlane/metadata/android/en-US/title.txt

@@ -0,0 +1 @@
+kirakira