Vibe coded prototype.

.devcontainer/Dockerfile

@@ -0,0 +1,8 @@
+FROM mcr.microsoft.com/devcontainers/rust:1-bookworm
+
+# [Optional] Install additional packages
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends libssl-dev pkg-config
+
+# Ensure the cargo target directory is owned by the vscode user
+RUN mkdir -p /workspaces/target && chown vscode:vscode /workspaces/target