Update test workflow to use real APK file

- Copy real APK from hackernews project to test_artifacts/
- Update workflow to use app-debug.apk instead of creating fake file
- This provides more realistic testing for sentry-cli build upload

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: runningcode

.github/workflows/test-pr-head-sha.yml

@@ -63,12 +63,11 @@ jobs:
             echo ""
           fi
 
-          # Create a dummy APK file for testing
-          mkdir -p test_artifacts
-          echo "fake apk content" > test_artifacts/test.apk
+          # Use the real APK file that should already be in the repo
+          ls -la test_artifacts/ || echo "No test_artifacts directory found"
 
           echo "=== Running sentry-cli build upload with debug logging ==="
-          echo "Command: ./target/release/sentry-cli --log-level debug build upload test_artifacts/test.apk"
+          echo "Command: ./target/release/sentry-cli --log-level debug build upload test_artifacts/app-debug.apk"
           echo ""
           echo "🔍 WATCH FOR DEBUG LOGS BELOW:"
           echo "Expected debug log: 'Using GitHub Actions PR head SHA from event payload: ${{ github.event.pull_request.head.sha }}'"
@@ -77,7 +76,7 @@ jobs:
 
           # Test the CLI's head-sha detection with debug logging enabled
           # Using a dummy auth token to get past auth check and reach the head-sha detection logic
-          ./target/release/sentry-cli --log-level debug --auth-token dummy_token_for_testing build upload test_artifacts/test.apk || true
+          ./target/release/sentry-cli --log-level debug --auth-token dummy_token_for_testing build upload test_artifacts/app-debug.apk || true
 
           echo "--- CLI OUTPUT END ---"
 
@@ -97,7 +96,7 @@ jobs:
           unset GITHUB_EVENT_NAME
 
           echo "Running CLI without GitHub Actions context (with debug logging)..."
-          ./target/release/sentry-cli --log-level debug --auth-token dummy_token_for_testing build upload test_artifacts/test.apk || true
+          ./target/release/sentry-cli --log-level debug --auth-token dummy_token_for_testing build upload test_artifacts/app-debug.apk || true
 
           echo ""
           echo "Expected: Should fall back to 'git rev-parse HEAD'"