Upgrading Docker to include newer node, so front-end builds

docker/Dockerfile

@@ -7,7 +7,7 @@
 #
 # Tested with: OrbStack (recommended on macOS), Docker Desktop (slower bind mounts)
 
-FROM rust:1.93-bookworm AS base
+FROM rust:1.94-bookworm AS base
 
 # Clippy and rustfmt are needed at runtime for acceptance gates
 RUN rustup component add clippy rustfmt

docker/stacks/rust/Dockerfile.fragment

@@ -14,10 +14,14 @@
 USER root
 
 # Build tools required by rustup and many Rust crates.
+# libudev-dev: serial/USB device crates (libudev-sys, serialport).
+# libclang-dev: bindgen-based crates; cargo test is skipped when absent.
 RUN apt-get update && apt-get install -y --no-install-recommends \
         build-essential \
         pkg-config \
         libssl-dev \
+        libudev-dev \
+        libclang-dev \
     && rm -rf /var/lib/apt/lists/*
 
 ENV RUSTUP_HOME="/home/huskies/.rustup" \