v1.4.0

Signed with Developer ID and notarized by Apple — opens without Gatekeeper warnings.

What's Changed

• Landing page: redesigned features section by @devin-ai-integration[bot] in #9
• Stale 1.4: AI agents section by @devin-ai-integration[bot] in #10

Full Changelog: v1.3.2...v1.4.0