Agent session invocations wired in; Sublime Text and Emacs editors added

What's Changed

• fix(core): enforce compile-time exhaustiveness in content-utils by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/27207
• feat(skills): add agent-tui and tui-tester skills by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/27121
• fix(context): Fix snapshot recovery across sessions. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/26939
• fix(core): add unit tests for stableStringify by @devr0306 in https://github.com/google-gemini/gemini-cli/pull/27212
• fix(core): prefer pwsh.exe over Windows PowerShell 5.1 (#25859) by @kaluchi in https://github.com/google-gemini/gemini-cli/pull/25900
• feat(core): add LocalSessionInvocation by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/26665
• refactor: decouple auto model description and configuration from releaseChannel by @danielweis in https://github.com/google-gemini/gemini-cli/pull/27227
• fix(core): prevent isBinary false-positive on Windows PTY streams by @TirthNaik-99 in https://github.com/google-gemini/gemini-cli/pull/26565
• fix(cli): Prevent unmapped keys in Vim Normal mode from inserting text into prompt Input. by @Rajeshpatel07 in https://github.com/google-gemini/gemini-cli/pull/25139
• fix(a2a-server): Implement default policy loading for parity with CLI by @kschaab in https://github.com/google-gemini/gemini-cli/pull/27073
• feat(core): add RemoteSessionInvocation by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/26937
• fix: allow configured MCP servers in non-interactive mode by @cocosheng-g in https://github.com/google-gemini/gemini-cli/pull/27215
• fix(core): add exception handling to migrateFromFileStorage by @devr0306 in https://github.com/google-gemini/gemini-cli/pull/27229
• fix(cli): bundle ink worker-entry.js by @rmedranollamas in https://github.com/google-gemini/gemini-cli/pull/27249
• feat(core): wire AgentSession invocations into agent-tool by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/26948
• fix(core): prevent path traversal in custome command file injection by @ompatel-aiml in https://github.com/google-gemini/gemini-cli/pull/27234
• fix(core): respect NO_PROXY in global fetch dispatcher by @cocosheng-g in https://github.com/google-gemini/gemini-cli/pull/27216
• fix(core): correctly handle nullable array types in MCP tools by @devr0306 in https://github.com/google-gemini/gemini-cli/pull/27228
• fix(cli): preserve proxy-agent named exports in ESM bundle by @ashishch432 in https://github.com/google-gemini/gemini-cli/pull/27145
• Proposal: deterministic encoding for child-process I/O by @kaluchi in https://github.com/google-gemini/gemini-cli/pull/27247
• feat(cli): add Sublime Text and Emacs Client editors, improve error messages and documentation by @alberti42 in https://github.com/google-gemini/gemini-cli/pull/21090

New Contributors

• @kaluchi made their first contribution in https://github.com/google-gemini/gemini-cli/pull/25900
• @Rajeshpatel07 made their first contribution in https://github.com/google-gemini/gemini-cli/pull/25139
• @ompatel-aiml made their first contribution in https://github.com/google-gemini/gemini-cli/pull/27234
• @ashishch432 made their first contribution in https://github.com/google-gemini/gemini-cli/pull/27145
• @alberti42 made their first contribution in https://github.com/google-gemini/gemini-cli/pull/21090

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.44.0-nightly.20260518.g5611ff40e...v0.44.0-nightly.20260521.g57c42a5c4