fix build naming

.github/workflows/build.yml

@@ -147,9 +147,9 @@ jobs:
           IPTPROXY_SOURCE: ${{ runner.temp }}/IPtProxy
         run: melos run build-go-runtime --no-select
 
-      - name: Build APK (Alpha, Impeller)
+      - name: Build APK (Alpha)
         if: steps.build-type.outputs.is_prerelease == 'true'
-        run: melos run build-browser-alpha-impeller --no-select
+        run: melos run build-browser-alpha --no-select
 
       - name: Build APK (Alpha, Legacy renderer)
         if: steps.build-type.outputs.is_prerelease == 'true'
@@ -168,7 +168,7 @@ jobs:
         if: steps.build-type.outputs.is_prerelease == 'true'
         uses: ncipollo/release-action@v1.17.0
         with:
-          artifacts: "apps/weblibre/build/app/outputs/apk/alphaImpeller/release/*.apk,apps/weblibre/build/app/outputs/apk/alphaLegacy/release/*.apk"
+          artifacts: "apps/weblibre/build/app/outputs/apk/alpha/release/*.apk,apps/weblibre/build/app/outputs/apk/alphaLegacy/release/*.apk"
           prerelease: true
 
       - name: Create github artifact release (Full)

apps/weblibre/android/app/build.gradle

@@ -55,12 +55,13 @@ android {
             dimension "track"
             manifestPlaceholders = [appName: "WebLibre"]
         }
-        // Same alpha release slot (applicationId/versionName suffix), split into
-        // two variants so Impeller and the legacy Skia renderer can be compared
-        // side by side. The renderer is chosen at Flutter engine startup via a
-        // manifest meta-data flag and cannot be switched at runtime, hence two
-        // separate builds rather than a single toggle.
-        alphaImpeller {
+        // "alpha" stays the default alpha build (Impeller, as before this split) so
+        // existing tooling/filters keyed on the "alpha" name keep working.
+        // alphaLegacy is an additional variant using the legacy Skia renderer, for
+        // side-by-side comparison. The renderer is chosen at Flutter engine
+        // startup via a manifest meta-data flag and cannot be switched at
+        // runtime, hence a separate build rather than a single toggle.
+        alpha {
             dimension "track"
             applicationIdSuffix ".alpha"
             versionNameSuffix "-alpha"
@@ -75,10 +76,7 @@ android {
     }
 
     sourceSets {
-        // Both alpha variants share the existing alpha launcher icon/branding.
-        alphaImpeller {
-            res.srcDirs += 'src/alpha/res'
-        }
+        // alphaLegacy shares the existing alpha launcher icon/branding.
         alphaLegacy {
             res.srcDirs += 'src/alpha/res'
         }

pubspec.yaml

@@ -94,12 +94,12 @@ melos:
         set -e
         cd apps/weblibre
         flutter build apk --release --flavor stable --target-platform android-arm,android-arm64 --split-per-abi --no-tree-shake-icons
-    build-browser-alpha-impeller:
+    build-browser-alpha:
       description: Build arm64 alpha release APK with Impeller enabled (side-by-side installable with stable)
       run: |
         set -e
         cd apps/weblibre
-        flutter build apk --release --flavor alphaImpeller --target-platform android-arm64 --no-tree-shake-icons
+        flutter build apk --release --flavor alpha --target-platform android-arm64 --no-tree-shake-icons
     build-browser-alpha-legacy:
       description: Build arm64 alpha release APK with the legacy Skia renderer (side-by-side installable with stable)
       run: |