chore: add brew

[tianzhou]

For #74

[Copilot]

Pull Request Overview

This PR adds Homebrew package distribution support to the release workflow, enabling automatic formula updates for macOS users when new releases are published.

• Introduces a new homebrew job that runs after the main release job completes
• Downloads the Darwin ARM64 binary and calculates its SHA256 hash for the Homebrew formula
• Uses the mislav/bump-homebrew-formula-action to automatically update the formula in the pgschema/homebrew-pgschema tap

---

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[Copilot]

The download URL is hardcoded to only support Darwin ARM64 architecture. This limits Homebrew support to Apple Silicon Macs and excludes Intel-based Macs. Consider adding support for both architectures or using a universal binary.

Suggested change

	- name: Calculate SHA256
	id: sha256
	run: |
	SHA256=$(shasum -a 256 ./dist/pgschema-darwin-arm64 | cut -d ' ' -f 1)
	echo "sha256=${SHA256}" >> $GITHUB_OUTPUT
	- name: Update Homebrew formula
	uses: mislav/bump-homebrew-formula-action@v3
	with:
	formula-name: pgschema
	formula-path: Formula/pgschema.rb
	homebrew-tap: pgschema/homebrew-pgschema
	download-url: https://github.com/pgschema/pgschema/releases/download/v${{ steps.version.outputs.version }}/pgschema-darwin-arm64
	- name: Download Darwin AMD64 binary
	uses: actions/download-artifact@v4
	with:
	name: pgschema-darwin-amd64
	path: ./dist
	- name: Calculate SHA256 (ARM64)
	id: sha256_arm64
	run: |
	SHA256=$(shasum -a 256 ./dist/pgschema-darwin-arm64 | cut -d ' ' -f 1)
	echo "sha256=${SHA256}" >> $GITHUB_OUTPUT
	- name: Calculate SHA256 (AMD64)
	id: sha256_amd64
	run: |
	SHA256=$(shasum -a 256 ./dist/pgschema-darwin-amd64 | cut -d ' ' -f 1)
	echo "sha256=${SHA256}" >> $GITHUB_OUTPUT
	- name: Update Homebrew formula
	uses: mislav/bump-homebrew-formula-action@v3
	with:
	formula-name: pgschema
	formula-path: Formula/pgschema.rb
	homebrew-tap: pgschema/homebrew-pgschema
	download-url-arm64: https://github.com/pgschema/pgschema/releases/download/v${{ steps.version.outputs.version }}/pgschema-darwin-arm64
	sha256-arm64: ${{ steps.sha256_arm64.outputs.sha256 }}
	download-url-amd64: https://github.com/pgschema/pgschema/releases/download/v${{ steps.version.outputs.version }}/pgschema-darwin-amd64
	sha256-amd64: ${{ steps.sha256_amd64.outputs.sha256 }}

[tianzhou]

Only apple silicon

[Copilot]

The SHA256 calculation is computed but the sha256 output is not used in the homebrew formula update action. The action likely calculates the hash automatically from the download URL, making this step redundant.

Suggested change

	- name: Calculate SHA256
	id: sha256
	run: |
	SHA256=$(shasum -a 256 ./dist/pgschema-darwin-arm64 | cut -d ' ' -f 1)
	echo "sha256=${SHA256}" >> $GITHUB_OUTPUT