Add Rust version

[ca0abinary]

The rust port of nap is more readable and results in a smaller executable size.

[Copilot]

Pull Request Overview

This PR adds a Rust implementation of the nap utility, providing a more readable and maintainable codebase while achieving smaller executable sizes. The Rust version supports cross-compilation for multiple architectures and platforms.

• Complete Rust rewrite of the nap utility with architecture-specific optimizations
• Cross-platform support for Linux and macOS on x86_64 and aarch64 architectures
• Updated build system and CI/CD pipeline to support both assembly and Rust versions

Reviewed Changes

Copilot reviewed 18 out of 21 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
rs-nap/src/main.rs	Main application logic and entry point for the Rust implementation
rs-nap/src/support.rs	Architecture-specific module selection and platform abstraction
rs-nap/src/support/generic.rs	Cross-platform syscall implementations with conditional compilation
rs-nap/src/support/x86_64.rs	Linux x86_64-specific syscall implementations
rs-nap/src/support/aarch64.rs	Linux aarch64-specific syscall implementations
rs-nap/src/support/noarch.rs	Platform-agnostic utility functions for string/number operations
rs-nap/src/support/interop.rs	C-compatible structure definitions for syscall interfaces
rs-nap/Cargo.toml	Rust package configuration for the nap utility
Cargo.toml	Workspace configuration with release optimizations
.cargo/config.toml	Cross-compilation settings for target architectures
rust-toolchain.toml	Rust toolchain specification with required components
Makefile	Updated build system to include Rust compilation alongside assembly
run-tests.sh	Test runner script supporting both assembly and Rust binaries
.github/workflows/main.yml	Modernized CI pipeline using dev containers
.devcontainer/devcontainer.json	Development container configuration
.devcontainer/Dockerfile	Container setup with cross-compilation tools
.github/dependabot.yml	Dependency update automation for dev containers
rs-nap/README.md	Documentation for building and running the Rust implementation

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[Copilot]

The function nth is unnecessarily complex - it simply returns n as usize. This can be replaced with a direct cast or the function can be removed entirely and replaced with inline casts.

Suggested change

	b'9' => Some(nth(9)),
	pub fn ascii_to_digit(character: u8) -> Option<usize> {
	match character {
	b'0' => Some(0 as usize),
	b'1' => Some(1 as usize),
	b'2' => Some(2 as usize),
	b'3' => Some(3 as usize),
	b'4' => Some(4 as usize),
	b'5' => Some(5 as usize),
	b'6' => Some(6 as usize),
	b'7' => Some(7 as usize),
	b'8' => Some(8 as usize),
	b'9' => Some(9 as usize),

[Copilot]

The nth() function calls are redundant here. Since nth(0) returns 0, nth(1) returns 1, etc., these can be replaced with direct numeric literals (0, 1, 2, etc.) or (character - b'0') as usize.

Suggested change

	_ => None,
	pub fn ascii_to_digit(character: u8) -> Option<usize> {
	if character >= b'0' && character <= b'9' {
	Some((character - b'0') as usize)
	} else {
	None

[Copilot]

The call to nth(10) should be replaced with the literal 10 since nth(10) simply returns 10.

Suggested change

	number *= nth(10);
	number *= 10;

[Copilot]

[nitpick] Comparing boolean values with == false is not idiomatic in Rust. Use !good_input instead.

Suggested change

	if good_input == false {
	if !good_input {

[Copilot]

[nitpick] Inconsistent syscall instruction format: this uses svc #0 while line 41 uses svc 0 (without #). Consider standardizing the format for consistency.

Suggested change

	asm!("svc #0",
	asm!("svc 0",

[Copilot]

[nitpick] Inconsistent syscall instruction format: this uses svc #0 while line 142 uses svc 0 (without #). Consider standardizing the format for consistency across the file.

Suggested change

	asm!("svc #0",
	asm!("svc 0",