Less release-workflow wrestling

This release cleans up the path around cached GhosttyKit artifacts and makes the Homebrew cask update step safer when tap credentials are unavailable.

A few release attempts were needed here. The final result is less dramatic, which is exactly what you want from release automation.

• Used cached GhosttyKit in the release workflow
• Skipped cask updates safely when the tap token is missing
• Published the corrected Droid 0.0.14 package