- Remove Intel macOS from create-app-release.yml workflow triggers and verification
- Update platform count from 4 to 3 in release verification
- Remove Intel macOS artifact handling and download logic
- Remove Intel macOS from CLI release matrix and documentation
- Update CI matrix to only include ARM macOS builds
- Clean up release notes to remove Intel macOS references

Now only supports ARM macOS builds with Nix for consistency.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>