ci: reduce duplicated runner work

Author: thymikee

.github/workflows/ci.yml

@@ -78,7 +78,7 @@ jobs:
 
   coverage:
     name: Coverage
-    runs-on: macos-26
+    runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
       - name: Checkout
@@ -104,44 +104,9 @@ jobs:
       - name: Run typecheck
         run: pnpm typecheck
 
-  android-helpers:
-    name: Android Helper Packages
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    steps:
-      - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-
-      - name: Setup toolchain
-        uses: ./.github/actions/setup-node-pnpm
-
-      - name: Install Android SDK packages
-        run: |
-          SDK_ROOT="${ANDROID_HOME:-${ANDROID_SDK_ROOT:-/usr/local/lib/android/sdk}}"
-          SDKMANAGER="$SDK_ROOT/cmdline-tools/latest/bin/sdkmanager"
-          if [ ! -x "$SDKMANAGER" ]; then
-            SDKMANAGER="$SDK_ROOT/cmdline-tools/bin/sdkmanager"
-          fi
-          if [ ! -x "$SDKMANAGER" ]; then
-            echo "sdkmanager not found under $SDK_ROOT" >&2
-            exit 1
-          fi
-          yes | "$SDKMANAGER" --licenses >/dev/null
-          "$SDKMANAGER" "platforms;android-36" "build-tools;36.0.0"
-
-      - name: Check Java toolchain
-        run: |
-          javac --version
-          java --version
-
-      - name: Package npm-bundled Android helpers
-        run: |
-          pnpm package:android-snapshot-helper:npm
-          pnpm package:android-multitouch-helper:npm
-
   integration:
     name: Integration Tests
-    runs-on: macos-26
+    runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
       - name: Checkout