Release v0.8.0-nightly.20250930.ae51bbda

What's Changed

• Add extension name auto-complete to /extensions update by @jakemac53 in https://github.com/google-gemini/gemini-cli/pull/10198

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.8.0-nightly.20250929.ae387b61...v0.8.0-nightly.20250930.ae51bbda