fix: GitHub actions disk space usage

.github/actions/disk-cleanup/action.yml

@@ -0,0 +1,37 @@
+name: Disk cleanup
+description: Clean up disk space by removing unnecessary files
+runs:
+  using: 'composite'
+  steps:
+    - name: Clean up unnecessary files
+      shell: bash
+      run: |
+        # Remove Java JDKs
+        sudo rm -rf /usr/lib/jvm
+
+        # Remove .NET SDKs
+        sudo rm -rf /usr/share/dotnet
+
+        # Remove Swift toolchain
+        sudo rm -rf /usr/share/swift
+
+        # Remove Haskell (GHC)
+        sudo rm -rf /usr/local/.ghcup
+
+        # Remove Julia
+        sudo rm -rf /usr/local/julia*
+
+        # Remove Chromium (optional if not using for browser tests)
+        sudo rm -rf /usr/local/share/chromium
+
+        # Remove Microsoft/Edge and Google Chrome builds
+        sudo rm -rf /opt/microsoft /opt/google
+
+        # Remove Azure CLI
+        sudo rm -rf /opt/az
+
+        # Remove PowerShell
+        sudo rm -rf /usr/local/share/powershell
+
+        # Remove toolcaches
+        sudo rm -rf /opt/hostedtoolcache

.github/actions/disk-usage/action.yml

@@ -0,0 +1,24 @@
+name: Disk usage
+description: Show disk usage
+runs:
+  using: 'composite'
+  steps:
+    - name: Total runner disk usage
+      shell: bash
+      run: df -h /
+
+    - name: Workspace usage
+      shell: bash
+      run: du -sh $GITHUB_WORKSPACE || true
+
+    - name: Gradle user home usage
+      shell: bash
+      run: du -sh ~/.gradle || true
+
+    - name: Gradle cache usage
+      shell: bash
+      run: du -sh ~/.gradle/caches || true
+
+    - name: Build outputs usage
+      shell: bash
+      run: du -sh build app-*/build || true

.github/actions/setup-gradle/action.yml

@@ -0,0 +1,34 @@
+name: Set up Gradle build environment
+description: Prepares environment for building with JDK and Gradle
+inputs:
+  run-release:
+    description: 'Whether to run in release mode (true/false). In release mode, Gradle cache is not used.'
+    required: false
+    default: 'false'
+  add-job-summary:
+    description: 'Whether to add a job summary (always, never, on-failure).'
+    required: false
+    default: 'always'
+  write-cache:
+    description: 'Whether to write to the cache (true/false).'
+    required: false
+    default: 'false'
+runs:
+  using: 'composite'
+  steps:
+    - name: Copy CI gradle.properties
+      shell: bash
+      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties
+
+    - name: Set up JDK
+      uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5.0.0
+      with:
+        distribution: 'temurin'
+        java-version: '21'
+
+    - name: Set up Gradle without cache
+      uses: gradle/actions/setup-gradle@748248ddd2a24f49513d8f472f81c3a07d4d50e1 # v4.4.4
+      with:
+        cache-disabled: ${{ inputs.run-release }}
+        add-job-summary: ${{ inputs.add-job-summary }}
+        cache-read-only: ${{ inputs.write-cache == 'false' || inputs.run-release == 'true' }}

.github/ci-gradle.properties

@@ -1,7 +1,10 @@
-org.gradle.daemon=false
+org.gradle.daemon=true
 org.gradle.parallel=true
+org.gradle.caching=true
+org.gradle.configuration-cache=true
+org.gradle.configuration-cache.parallel=true
 org.gradle.workers.max=4
-org.gradle.jvmargs=-Xmx10g -XX:MaxMetaspaceSize=2g -Dfile.encoding=UTF-8 -XX:+UseParallelGC -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx10g -XX:MaxMetaspaceSize=4g -Dfile.encoding=UTF-8 -XX:+UseParallelGC
 
 kotlin.incremental=true
 kotlin.compiler.execution.strategy=in-process

.github/dependabot.yml

@@ -1,7 +1,11 @@
 version: 2
 updates:
+  # Dependabot does not support GitHub composite actions by default (.github/actions)
+  # so we need to add the folder by hand to the directories entry.
   - package-ecosystem: "github-actions"
-    directory: "/"
+    directories:
+      - "/"
+      - "/.github/actions/*"
     schedule:
       interval: "weekly"
     labels:

.github/workflows/android-pr.yml

@@ -30,8 +30,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Build K9 application
         run: ./gradlew :app-k9mail:assemble
@@ -44,8 +44,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Build Thunderbird application
         run: ./gradlew :app-thunderbird:assemble
@@ -58,8 +58,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Build App UI-catalog application in Debug mode
         run: ./gradlew :app-ui-catalog:assembleDebug
@@ -81,9 +81,9 @@ jobs:
         if: steps.changes.outputs.cli_tools_changed == 'true'
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
+      - name: Setup Gradle environment
         if: steps.changes.outputs.cli_tools_changed == 'true'
-        uses: ./.github/actions/setup
+        uses: ./.github/actions/setup-gradle
 
       - name: Build CLI tools
         # run only if CLI tools were changed
@@ -98,8 +98,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Running Android lint
         run: ./gradlew lint
@@ -112,8 +112,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Running spotless check
         run: ./gradlew spotlessCheck
@@ -126,8 +126,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Running Detekt
         run: ./gradlew detekt
@@ -149,8 +149,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Running unit tests
         run: ./gradlew testsOnCi --parallel
@@ -163,8 +163,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Running Dependency Guard
         run: ./gradlew dependencyGuard
@@ -177,8 +177,8 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
-      - name: Prepares environment
-        uses: ./.github/actions/setup
+      - name: Setup Gradle environment
+        uses: ./.github/actions/setup-gradle
 
       - name: Running K9 Badging
         run: |