Create custom Nix package for Claude Code CLI that fetches directly from
Anthropic's Google Cloud Storage distribution instead of npm registry,
working around Block's Cloudflare Teams dependency confusion protection.
- Add claude-cli package with platform-specific binaries
- Include comprehensive README with update instructions
- Enable development role on work machine
- Switch from unstable.claude-code to custom.claude-cli
- Add google-cloud-sdk to work machine packages
