rdsh 0.8.0

Rust port/shim for dsh: fast launcher, token saver, zero behavior breakage via passthrough
{
  "name": "rustdsh",
  "image": "mcr.microsoft.com/devcontainers/rust:1-bookworm",
  "features": {
    "ghcr.io/devcontainers/features/node:1": { "version": "22" },
    "ghcr.io/devcontainers/features/github-cli:1": {}
  },
  "postCreateCommand": "sudo apt-get update && sudo apt-get install -y --no-install-recommends python3 zstd shellcheck && rustup component add rustfmt clippy && sh scripts/dev-setup.sh --with-node-deps",
  "customizations": {
    "vscode": {
      "extensions": [
        "rust-lang.rust-analyzer",
        "editorconfig.editorconfig",
        "tamasfe.even-better-toml",
        "davidanson.vscode-markdownlint",
        "timonwong.shellcheck"
      ]
    }
  }
}