Mosttly Ghostty 0.1.10

macOS build for Mosttly Ghostty 0.1.10.

What's Changed

• Improve release workflow safety by @agentmt in #3
• Gate milestone workflow to upstream by @agentmt in #4
• Remove upstream-only workflows by @agentmt in #5
• Simplify GitHub workflows by @agentmt in #6

Full Changelog: mosttly-v0.1.9...mosttly-v0.1.10