feat: enhance Android emulator setup with disk space cleanup and dynamic disk size configuration

Author: YogendraShelke

.github/workflows/android.yml

@@ -8,6 +8,7 @@ env:
   DEVICE_ARCH: 'x86_64'
   DEVICE_TARGET: 'google_apis'
   AVD_NAME: 'Pixel_API_35'
+  EMULATOR_DISK_SIZE: '8G'
   ANDROID_SDK_ROOT: /usr/local/lib/android/sdk
   ANDROID_HOME: /usr/local/lib/android/sdk
   NDK_VERSION: '27.3.13750724'
@@ -50,6 +51,25 @@ jobs:
           sudo udevadm trigger --name-match=kvm
           ls /dev/kvm
 
+      - name: Free Disk Space
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          echo "Disk space before cleanup:"
+          df -h
+
+          # GitHub-hosted runners come with extra SDKs/toolchains preinstalled.
+          # Removing a few of the largest ones gives the Android emulator enough
+          # room to create its userdata partition.
+          sudo rm -rf /usr/share/dotnet || true
+          sudo rm -rf /opt/ghc || true
+          sudo rm -rf /usr/local/share/boost || true
+          sudo rm -rf /usr/share/swift || true
+
+          echo "Disk space after cleanup:"
+          df -h
+
       - name: Cache Gradle
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.2.0
         with:
@@ -70,22 +90,24 @@ jobs:
 
       - name: AVD cache
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.2.0
+        id: avd-cache
         with:
           path: |
             ~/.android/avd/*
             ~/.android/adb*
-          key: avd-${{ env.DEVICE_API_LEVEL }}-${{ env.DEVICE_ARCH }}
+          key: avd-${{ env.DEVICE_API_LEVEL }}-${{ env.DEVICE_TARGET }}-${{ env.DEVICE_ARCH }}-${{ env.EMULATOR_DISK_SIZE }}
 
       # Create AVD (only if not cached, runs after build)
       - name: Create AVD and generate snapshot for caching
+        if: steps.avd-cache.outputs.cache-hit != 'true'
         uses: reactivecircus/android-emulator-runner@b530d96654c385303d652368551fb075bc2f0b6b # v2.33.0
         with:
           api-level: ${{ env.DEVICE_API_LEVEL }}
           target: ${{ env.DEVICE_TARGET }}
           arch: ${{ env.DEVICE_ARCH }}
           ram-size: 4096M
-          disk-size: 6G
-          force-avd-creation: false
+          disk-size: ${{ env.EMULATOR_DISK_SIZE }}
+          force-avd-creation: true
           avd-name: ${{ env.AVD_NAME }}
           disable-animations: true
           emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none -memory 4096
@@ -100,6 +122,7 @@ jobs:
           target: ${{ env.DEVICE_TARGET }}
           arch: ${{ env.DEVICE_ARCH }}
           ram-size: 4096M
+          disk-size: ${{ env.EMULATOR_DISK_SIZE }}
           force-avd-creation: false
           avd-name: ${{ env.AVD_NAME }}
           disable-animations: true