vcpkg(mfx-dispatch): rewrite AC_PROG_LIBTOOL → LT_INIT for autotools 1.17+

ci/runners/linux/provision.sh

@@ -79,6 +79,7 @@ export DEBIAN_FRONTEND=noninteractive
 apt-get update -qq
 apt-get install -y --no-install-recommends \
     build-essential clang gcc g++ cmake ninja-build pkg-config nasm yasm \
+    autoconf automake libtool \
     libgtk-3-dev libayatana-appindicator3-dev \
     libasound2-dev libpulse-dev libpam0g-dev libssl-dev \
     libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
@@ -173,6 +174,11 @@ chown -R "$SERVICE_USER:$SERVICE_USER" "$FLUTTER_DIR"
 chown -R "$SERVICE_USER:$SERVICE_USER" "$VCPKG_DIR"
 # LLVM: read+execute is enough; we never write here at build time.
 chown -R "$SERVICE_USER:$SERVICE_USER" "$LLVM_DIR"
+# /opt/cargo-tools: workflow installs cargo-expand and flutter_rust_bridge_codegen
+# here via `cargo install --root`. Pre-create with the right owner so the first
+# job doesn't try to mkdir under root-owned /opt.
+mkdir -p /opt/cargo-tools
+chown -R "$SERVICE_USER:$SERVICE_USER" /opt/cargo-tools
 
 # git "dubious ownership": same fix as Windows. Trust system-wide.
 git config --system --add safe.directory '*' || true