fix: Update upload-artifact action to v4 and ensure proper summary formatting

Author: jsonify

.github/workflows/ci.yml

@@ -92,7 +92,7 @@ jobs:
     
     - name: 📦 Upload Build Artifacts
       if: matrix.build_mode == 'release'
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: "${{ env.APP_NAME }}-${{ matrix.build_system }}-${{ github.sha }}"
         path: |
@@ -179,4 +179,4 @@ jobs:
         echo "" >> $GITHUB_STEP_SUMMARY
         echo "### 🚀 Next Steps" >> $GITHUB_STEP_SUMMARY
         echo "- **For Release**: Create a version tag (e.g., \`git tag v1.3.0 && git push origin v1.3.0\`)" >> $GITHUB_STEP_SUMMARY
-        echo "- **For Development**: Merge to main branch when ready" >> $GITHUB_STEP_SUMMARY
+        echo "- **For Development**: Merge to main branch when ready" >> $GITHUB_STEP_SUMMARY