Initialize Rust CLI template with CI/CD, dev tooling, and security best practices

[Copilot]

Bootstraps a production-ready template for Rust CLI applications with modern tooling, multi-platform testing, and security hardening.

Project Structure

• CLI Application: clap v4 with derive API, anyhow error handling, integration tests via assert_cmd
• Build Tooling: Makefile with 12 tasks (build, test, lint, format, audit, ci), cargo config with incremental compilation
• Code Quality: rustfmt, clippy, editorconfig for cross-editor consistency

CI/CD

• Testing: Matrix across Ubuntu/Windows/macOS × stable/beta Rust with caching
• Security: rustsec audit, explicit GITHUB_TOKEN permissions (contents:read/write), patched actions/download-artifact@v4.1.3
• Releases: Cross-platform binaries via softprops/action-gh-release@v2 on tag push

Development Environment

• Dev Container: Debian Bookworm with rust-analyzer, format-on-save, clippy integration
• Documentation: README with quick start, CONTRIBUTING.md with guidelines, CHANGELOG.md following Keep a Changelog

Example Usage

make ci          # Run all checks (format, lint, test)
make build       # Release build
cargo run -- --name "User" --verbose

All security scans pass (CodeQL: 0 alerts, no vulnerable dependencies).

Original prompt

Set up this template repository for creating Rust CLI applications. Include dev container, GitHub actions, makefile, change log, and any other common elements for Rust CLI development

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.