fix: revert to artifact zip download, PR comment only

Use upload-artifact with artifact-id for direct zip download URL.
Remove prerelease approach and commit comments.

https://claude.ai/code/session_0138kUcZaPQoQcAc7nA1KDbf

.github/workflows/build-benchmark-apk.yml

@@ -36,68 +36,20 @@ jobs:
       - name: Build Benchmark APK
         run: ./gradlew assemblePlayBenchmark
 
-      - name: Upload APK to prerelease
+      - name: Upload Play Benchmark APK
         id: upload
-        uses: actions/github-script@v7
+        uses: actions/upload-artifact@v6
         with:
-          script: |
-            const fs = require('fs');
-            const apkPath = 'amethyst/build/outputs/apk/play/benchmark/amethyst-play-universal-benchmark.apk';
-            const sha = context.sha.substring(0, 7);
-            const tag = `benchmark-${sha}`;
-
-            // Delete existing release with this tag if it exists
-            try {
-              const { data: existing } = await github.rest.repos.getReleaseByTag({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                tag
-              });
-              await github.rest.repos.deleteRelease({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                release_id: existing.id
-              });
-              await github.rest.git.deleteRef({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                ref: `tags/${tag}`
-              });
-            } catch (e) {
-              // Release doesn't exist yet, that's fine
-            }
-
-            const { data: release } = await github.rest.repos.createRelease({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              tag_name: tag,
-              target_commitish: context.sha,
-              name: `Benchmark APK (${sha})`,
-              body: `Auto-generated benchmark APK for commit ${context.sha}`,
-              prerelease: true
-            });
-
-            const apkData = fs.readFileSync(apkPath);
-            const { data: asset } = await github.rest.repos.uploadReleaseAsset({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              release_id: release.id,
-              name: 'amethyst-play-universal-benchmark.apk',
-              data: apkData,
-              headers: {
-                'content-type': 'application/vnd.android.package-archive',
-                'content-length': apkData.length
-              }
-            });
-
-            core.setOutput('apk-url', asset.browser_download_url);
+          name: Play Benchmark APK
+          path: amethyst/build/outputs/apk/play/benchmark/amethyst-play-universal-benchmark.apk
 
       - name: Comment on PR with APK link
         uses: actions/github-script@v7
         with:
           script: |
-            const apkUrl = `${{ steps.upload.outputs.apk-url }}`;
-            const body = `📦 **Benchmark APK ready!**\n\nDownload: [Play Benchmark APK](${apkUrl})`;
+            const artifactId = `${{ steps.upload.outputs.artifact-id }}`;
+            const downloadUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}/artifacts/${artifactId}`;
+            const body = `📦 **Benchmark APK ready!**\n\nDownload: [Play Benchmark APK](${downloadUrl})`;
 
             const branch = context.ref.replace('refs/heads/', '');
             const { data: prs } = await github.rest.pulls.list({