[#25494] Added DDSRecordReplay dependencies

Signed-off-by: danipiza <dpizarrogallego@gmail.com>

Author: Danipiza

.github/workflows/downstream-ci.yml

@@ -85,6 +85,22 @@ jobs:
         with:
           cmake_build_type: ${{ matrix.cmake_build_type }}
 
+      # DDS Record Replay needs lz4 and zstd for MCAP compression (installed via
+      # apt on Linux and vcpkg on Windows). No other downstream tool requires them.
+      - name: Install MCAP dependencies (lz4, zstd)
+        if: matrix.tool.name == 'ddsrecordreplay'
+        uses: ./src/ddsrecordreplay/.github/actions/install_mcap_dependencies
+        with:
+          cmake_build_type: ${{ matrix.cmake_build_type }}
+
+      # On Windows the mcap action installs lz4/zstd through vcpkg; expose that
+      # prefix so CMake's find_package(lz4)/find_package(zstd) can locate them.
+      - name: Expose vcpkg packages to CMake (Windows)
+        if: matrix.tool.name == 'ddsrecordreplay' && runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          "CMAKE_PREFIX_PATH=$env:vcpkg_install_path;$env:CMAKE_PREFIX_PATH" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+
       # Prebuilt Fast DDS + dev-utils. DDS Pipe itself is built from source (checked out above),
       # so this run reflects the DDS Pipe changes, not the nightly artifact
       - name: Download Fast DDS + dev-utils artifact