## What's Changed
* fix(core): preserve system PATH in Git environment to fix ENOENT (#25034) by @cocosheng-g in https://github.com/google-gemini/gemini-cli/pull/26587
* fix(routing): fix resolveClassifierModel argument mismatch in ApprovalModeStrategy by @danielweis in https://github.com/google-gemini/gemini-cli/pull/26658
* docs: add vi mode shortcuts and clarify MCP/custom sandbox setup by @chrisjcthomas in https://github.com/google-gemini/gemini-cli/pull/23853
* fix(ux): fixed issue with transcribed text not showing after releasing space by @devr0306 in https://github.com/google-gemini/gemini-cli/pull/26609
* ci: fix json parsing in scheduled triage workflow by @cocosheng-g in https://github.com/google-gemini/gemini-cli/pull/26656
* fix(cli): hide /memory add subcommand when memoryV2 is enabled by @SandyTao520 in https://github.com/google-gemini/gemini-cli/pull/26605
* fix: prevent false command conflicts when launching from home directory by @Br1an67 in https://github.com/google-gemini/gemini-cli/pull/23069
* fix(core): cache model routing decision in LocalAgentExecutor by @akh64bit in https://github.com/google-gemini/gemini-cli/pull/26548
* Changelog for v0.42.0-preview.2 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/26597
* skip broken test by @scidomino in https://github.com/google-gemini/gemini-cli/pull/26705
* feat: export session to file and import via flag by @cocosheng-g in https://github.com/google-gemini/gemini-cli/pull/26514
* Feat: Add Machine Hostname to CLI interface by @M-DEV-1 in https://github.com/google-gemini/gemini-cli/pull/25637
* docs(extensions): refactor releasing guide and add update mechanisms by @ruomengz in https://github.com/google-gemini/gemini-cli/pull/26595
* fix(ci): fix maintainer identification in lifecycle manager by @gundermanc in https://github.com/google-gemini/gemini-cli/pull/26706
* fix(ui): added quotes around session id in resume tip by @devr0306 in https://github.com/google-gemini/gemini-cli/pull/26669
* Changelog for v0.41.0 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/26670
* refactor(core): agent session protocol changes by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/26661
* fix(context): implement loose boundary policy for gc backstop. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/26594
* fix(core): throw explicit error on dropped tool responses by @aishaneeshah in https://github.com/google-gemini/gemini-cli/pull/26668
* fix: resolve "function response turn must come immediately after function call" error by @danielweis in https://github.com/google-gemini/gemini-cli/pull/26691
* fix(core): resolve parallel tool call streaming ID collision by @aishaneeshah in https://github.com/google-gemini/gemini-cli/pull/26646
* feat(core): add LocalSubagentProtocol behind AgentProtocol by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/25302
* fix(cli): remove noisy theme registration logs from terminal by @JayadityaGit in https://github.com/google-gemini/gemini-cli/pull/25858
* ci: implement codebase-aware effort level triage by @cocosheng-g in https://github.com/google-gemini/gemini-cli/pull/26666
* feat(acp/core): prefix tool call IDs with tool names to support tool rendering in ACP compliant IDEs. by @sripasg in https://github.com/google-gemini/gemini-cli/pull/26676
* fix(mcp): treat GET 404 as 405 in StreamableHTTPClientTransport by @krishdef7 in https://github.com/google-gemini/gemini-cli/pull/24847
* feat(core): add RemoteSubagentProtocol behind AgentProtocol by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/25303
* feat(context): Improvements to the snapshotter. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/26655
## New Contributors
* @danielweis made their first contribution in https://github.com/google-gemini/gemini-cli/pull/26658
* @Br1an67 made their first contribution in https://github.com/google-gemini/gemini-cli/pull/23069
* @M-DEV-1 made their first contribution in https://github.com/google-gemini/gemini-cli/pull/25637
**Full Changelog**: https://github.com/google-gemini/gemini-cli/compare/v0.42.0-nightly.20260507.ga809bc7c5...v0.42.0-nightly.20260511.g1a894c18e