Gemini CLI is deprecated in favour of Antigravity

[rrobbes]

According to https://developers.googleblog.com/an-important-update-transitioning-gemini-cli-to-antigravity-cli/ , Gemini CLI will stop working on June 18, 2026. Users should migrate to Google's antigravity.

Tentative heuristics to find Antigravity users:

• initial search https://github.com/search?q=path%3A.antigravity&type=code
• .antigravity/ directory
• .antigravityrules
• .antigravityignore
• .antigravityrc