feat: automatically update latest tag for cli releases

[cabljac]

Summary

Updates CLI installation to use GitHub releases with automatic "latest" tag management and manual workflow triggers.

Changes

Install Script (bin/install_cli)

• Updates download URL to use GitHub releases: https://github.com/firebase/genkit/releases/download/latest/genkit-$MACHINE
• Maintains existing platform detection logic

Build Workflow (.github/workflows/build-cli-binaries.yml)

• Manual trigger only: Removes push trigger, adds workflow inputs
• New inputs: version (required) and upload_to_release (optional)
• New jobs:
  • create-release: Creates GitHub release with download links
  • upload-assets: Uploads binaries as release assets
  • update-latest-tag: Updates "latest" tag to point to new release

Benefits

• Static install URL that always points to latest version
• Manual control over when releases happen
• Maintains specific version tags for rollback capability

Usage

• Test: Run workflow with upload_to_release unchecked
• Release: Run workflow with upload_to_release checked and specify version

[Copilot]

Pull Request Overview

This PR enhances the CLI build workflow to automate release management with a "latest" tag system. The changes enable manual release creation through GitHub Actions with automatic latest tag updates for simplified CLI installation.

• Adds manual workflow inputs for version specification and optional release upload
• Implements automated GitHub release creation with changelog generation
• Creates a "latest" tag management system for consistent download URLs

[Copilot]

The actions/create-release@v1 action is deprecated. Consider using softprops/action-gh-release@v1 or the GitHub CLI (gh release create) for better maintenance and security.

Suggested change

	uses: actions/create-release@v1
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	with:
	tag_name: ${{ inputs.version }}
	release_name: Genkit CLI ${{ inputs.version }}
	uses: softprops/action-gh-release@v1
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	with:
	tag_name: ${{ inputs.version }}
	name: Genkit CLI ${{ inputs.version }}

[Copilot]

The actions/upload-release-asset@v1 action is deprecated. Consider using softprops/action-gh-release@v1 which can handle both release creation and asset uploads in a single step.

[Copilot]

The create-release job doesn't expose upload_url as an output. You need to add outputs: upload_url: ${{ steps.create_release.outputs.upload_url }} to the create-release job.

[Copilot]

The asset name should include the file extension for Windows binaries. Use genkit-${{ matrix.target }}${{ steps.binary.outputs.ext }} to ensure consistent naming with the actual file.

Suggested change

	asset_name: genkit-${{ matrix.target }}
	asset_name: genkit-${{ matrix.target }}${{ steps.binary.outputs.ext }}

[Copilot]

The installation instructions placeholder should be replaced with actual installation commands before merging to production.

Suggested change

	TODO: Add installation instructions
	# For Linux (x64 or ARM64)
	curl -LO https://github.com/firebase/genkit/releases/download/${{ inputs.version }}/genkit-linux-x64
	chmod +x genkit-linux-x64
	sudo mv genkit-linux-x64 /usr/local/bin/genkit
	# For macOS (x64 or ARM64)
	curl -LO https://github.com/firebase/genkit/releases/download/${{ inputs.version }}/genkit-darwin-x64
	chmod +x genkit-darwin-x64
	sudo mv genkit-darwin-x64 /usr/local/bin/genkit
	# For Windows (x64)
	curl -LO https://github.com/firebase/genkit/releases/download/${{ inputs.version }}/genkit-win32-x64.exe
	move genkit-win32-x64.exe C:\Windows\System32\genkit.exe