Gen Devcontainer

Generate a `.devcontainer/devcontainer.json` keyed to the project's primary language so `gh codespace create` (or VS Code's "Reopen in Container") gives anyone on the team a ready-to-go env with the right runtime, GH CLI, git-lfs, and language-tier VS Code extensions pre-installed. Preview-by-default; idempotent on apply (no-op on identical bytes, diff-and-refuse on divergence unless `--force-overwrite`). TRIGGER when the user says "add a devcontainer", "set up codespaces", "scaffold devcontainer.json", "reopen in container", "configure dev environment", "containerized dev env", "make this work in codespaces", "add VS Code container", "wire up devcontainer", "/nyann:gen-devcontainer". Also trigger when a user asks "how do I run this in Codespaces" and there's no `.devcontainer/` directory yet. Do NOT trigger on "build a Docker image for production" — that's a Dockerfile concern outside devcontainer scope. Do NOT trigger on "fix my devcontainer build" — that's debugging an existing setup, not generating one (read the file with the user instead).

mkdir -p ~/.claude/skills/gen-devcontainer
curl -L https://claudskills.com/skills/gen-devcontainer/SKILL.md \
  -o ~/.claude/skills/gen-devcontainer/SKILL.md

@misc{gen-devcontainer-2026,
  author    = {thettwe},
  title     = {Gen Devcontainer [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/gen-devcontainer/}
}