feat(release): add automated binary distribution via GitHub

[pmarsceill]

Summary

• Add --version flag to CLI with build-time version injection via -ldflags
• Add GitHub Actions release workflow triggered on version tags (v*)
• Build cross-platform binaries for linux/darwin on amd64/arm64
• Create install.sh script for curl-pipe-bash installation
• Add tests for version flag and install script validation

Changes

File	Description
internal/cli/root.go	Add Version variable and set on root command
.github/workflows/release.yml	New release workflow for building and publishing binaries
install.sh	Installation script for end users
internal/cli/root_test.go	Tests for version flag functionality
install_test.go	Tests for install script validation

Usage

Create a release:

git tag v0.1.0
git push origin v0.1.0

Install via script:

curl -fsSL https://raw.githubusercontent.com/pmarsceill/mapcli/main/install.sh | bash

Test plan

• All existing tests pass
• New version tests pass (go test -v ./internal/cli -run "Test.*Version")
• Install script tests pass (go test -v ./... -run "TestInstallScript")
• Linter passes with 0 issues
• map --version outputs correct version when built with ldflags
• Create test tag to verify release workflow
• Test install script on macOS after first release

🤖 Generated with Claude Code