Add Homebrew and Debian/Ubuntu packaging with verification tests

[Copilot]

Adds packaging support for macOS Homebrew and Debian/Ubuntu apt, complementing the existing RPM and Nix packaging.

Homebrew — Formula/tarzst.rb

• Installs tarzst binary + zstar symlink via bin.install_symlink
• Declares runtime deps: bash, zstd, gnupg, coreutils; recommends pv
• Downloads from GitHub release tag v3.1

brew tap 8r4n/zstar https://github.com/8r4n/zstar
brew install tarzst

Debian — tarzst-project/debian/

• control: Architecture: all, depends on bash (>= 4.0), tar, zstd, coreutils, gnupg2
• rules: debhelper-based, override_dh_auto_install handles rename from tarzst.sh → tarzst and zstar symlink
• source/format: 3.0 (native)
• Standard changelog, copyright (DEP-5/MIT)

cd tarzst-project
dpkg-buildpackage -us -uc -b
sudo dpkg -i ../tarzst_3.1_all.deb

README

• Added TOC entries and documentation sections for both packaging methods

Packaging Verification Tests — test/test_packaging.bats

Added 56 BATS tests to verify packaging correctness:

• Homebrew formula validation (16 tests): Ruby syntax, metadata (version, license, homepage), dependency declarations, install paths, test block
• Debian packaging validation (23 tests): File structure, control fields (package name, architecture, dependencies), rules install logic, changelog format, copyright (DEP-5/MIT), source format
• Simulated install tests (2 tests): Executes the install commands from debian/rules into a temp directory, verifies binary exists, is executable, symlink points correctly, and --help produces expected output
• Cross-format consistency tests (7 tests): Verifies version, dependencies, and license match across Homebrew, Debian, and RPM spec

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[8r4n]

@copilot implement testing to verify the successful packaging

[8r4n]

@copilot add guidance on how to submit bugs and pull requests via github issues. add a contributor guide

[Copilot]

@copilot implement testing to verify the successful packaging

Added test/test_packaging.bats with 56 tests covering:

• Homebrew formula (16 tests): Ruby syntax validation, metadata (version, license, homepage), all dependency declarations, install paths, test block
• Debian packaging (23 tests): File structure (control, rules, changelog, copyright, source/format), control fields (package name, architecture, dependencies), rules install logic
• Simulated install (2 tests): Runs the actual install commands from debian/rules into a temp dir, verifies binary + symlink + help output
• Cross-format consistency (7 tests): Verifies version, dependencies, and license match across Homebrew, Debian, and RPM spec

All 56 tests pass. See commit aeef40c.