## What's Changed
* docs(core): update generalist agent documentation by @abhipatel12 in https://github.com/google-gemini/gemini-cli/pull/25325
* chore(mcp): check MCP error code over brittle string match by @jackwotherspoon in https://github.com/google-gemini/gemini-cli/pull/25381
* feat(plan): update plan mode prompt to allow showing plan content by @ruomengz in https://github.com/google-gemini/gemini-cli/pull/25058
* test(core): improve sandbox integration test coverage and fix OS-specific failures by @ehedlund in https://github.com/google-gemini/gemini-cli/pull/25307
* fix(core): use debug level for keychain fallback logging by @ehedlund in https://github.com/google-gemini/gemini-cli/pull/25398
* feat(test): add a performance test in asian language by @cynthialong0-0 in https://github.com/google-gemini/gemini-cli/pull/25392
* feat(cli): enable mouse clicking for cursor positioning in AskUser multi-line answers by @Adib234 in https://github.com/google-gemini/gemini-cli/pull/24630
* fix(core): detect kmscon terminal as supporting true color by @claygeo in https://github.com/google-gemini/gemini-cli/pull/25282
* ci: add agent session drift check workflow by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/25389
* use macos-latest-large runner where applicable. by @scidomino in https://github.com/google-gemini/gemini-cli/pull/25413
* Changelog for v0.37.2 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/25336
* chore(release): bump version to 0.40.0-nightly.20260414.g5b1f7375a by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/25420
* Fix(core): retry additional OpenSSL 3.x SSL errors during streaming (#16075) by @rcleveng in https://github.com/google-gemini/gemini-cli/pull/25187
## New Contributors
* @claygeo made their first contribution in https://github.com/google-gemini/gemini-cli/pull/25282
* @rcleveng made their first contribution in https://github.com/google-gemini/gemini-cli/pull/25187
**Full Changelog**: https://github.com/google-gemini/gemini-cli/compare/v0.39.0-nightly.20260414.gdaf500623...v0.40.0-nightly.20260415.g06e7621b2