Release v0.19.0-preview.0

What's Changed

• Use lenient MCP output schema validator by @cornmander in https://github.com/google-gemini/gemini-cli/pull/13521
• Update persistence state to track counts of messages instead of times banner has been displayed by @Adib234 in https://github.com/google-gemini/gemini-cli/pull/13428
• update docs for http proxy by @scidomino in https://github.com/google-gemini/gemini-cli/pull/13538
• move stdio by @jacob314 in https://github.com/google-gemini/gemini-cli/pull/13528
• chore(release): bump version to 0.19.0-nightly.20251120.8e531dc02 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/13540
• Skip pre-commit hooks for shadow repo (#13331) by @vishvananda in https://github.com/google-gemini/gemini-cli/pull/13488
• fix(ui): Correct mouse click cursor positioning for wide characters by @SandyTao520 in https://github.com/google-gemini/gemini-cli/pull/13537
• fix(core): correct bash @P prompt transformation detection by @pyrytakala in https://github.com/google-gemini/gemini-cli/pull/13544
• Optimize and improve test coverage for cli/src/config by @megha1188 in https://github.com/google-gemini/gemini-cli/pull/13485
• Improve code coverage for cli/src/ui/privacy package by @megha1188 in https://github.com/google-gemini/gemini-cli/pull/13493
• docs: fix typos in source code and documentation by @fancive in https://github.com/google-gemini/gemini-cli/pull/13577
• Improved code coverage for cli/src/zed-integration by @megha1188 in https://github.com/google-gemini/gemini-cli/pull/13570
• feat(ui): build interactive session browser component by @bl-ue in https://github.com/google-gemini/gemini-cli/pull/13351
• Fix multiple bugs with auth flow including using the implemented but unused restart support. by @jacob314 in https://github.com/google-gemini/gemini-cli/pull/13565
• feat(core): add modelAvailabilityService for managing and tracking model health by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/13426
• docs: fix grammar typo "a MCP" to "an MCP" by @noahacgn in https://github.com/google-gemini/gemini-cli/pull/13595
• feat: custom loading phrase when interactive shell requires input by @jackwotherspoon in https://github.com/google-gemini/gemini-cli/pull/12535
• docs: Update uninstall command to reflect multiple extension support by @JayadityaGit in https://github.com/google-gemini/gemini-cli/pull/13582
• bug(core): Ensure we use thinking budget on fallback to 2.5 by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/13596
• Remove useModelRouter experimental flag by @Adib234 in https://github.com/google-gemini/gemini-cli/pull/13593
• feat(docs): Ensure multiline JS objects are rendered properly. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/13535
• Fix exp id logging by @owenofbrien in https://github.com/google-gemini/gemini-cli/pull/13430
• Moved client id logging into createBasicLogEvent by @owenofbrien in https://github.com/google-gemini/gemini-cli/pull/13607
• Restore bracketed paste mode after external editor exit by @scidomino in https://github.com/google-gemini/gemini-cli/pull/13606
• feat(core): Add support for custom aliases for model configs. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/13546
• feat(core): Add BaseLlmClient.generateContent. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/13591
• Turn off alternate buffer mode by default. by @jacob314 in https://github.com/google-gemini/gemini-cli/pull/13623
• fix(cli): Prevent stdout/stderr patching for extension commands by @chrstnb in https://github.com/google-gemini/gemini-cli/pull/13600
• Improve test coverage for cli/src/ui/components by @megha1188 in https://github.com/google-gemini/gemini-cli/pull/13598
• Update ink version to 6.4.6 by @jacob314 in https://github.com/google-gemini/gemini-cli/pull/13631
• chore/release: bump version to 0.19.0-nightly.20251122.42c2e1b21 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/13637
• chore/release: bump version to 0.19.0-nightly.20251123.dadd606c0 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/13675
• chore/release: bump version to 0.19.0-nightly.20251124.e177314a4 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/13713
• fix(core): Fix context window overflow warning for PDF files by @kkitase in https://github.com/google-gemini/gemini-cli/pull/13548
• feat :rephrasing the extension logging messages to run the explore command when there are no extensions installed by @JayadityaGit in https://github.com/google-gemini/gemini-cli/pull/13740
• Improve code coverage for cli package by @megha1188 in https://github.com/google-gemini/gemini-cli/pull/13724
• Add session subtask in /stats command by @Adib234 in https://github.com/google-gemini/gemini-cli/pull/13750
• feat(core): Migrate chatCompressionService to model configs. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/12863
• feat(hooks): Hook Telemetry Infrastructure by @Edilmo in https://github.com/google-gemini/gemini-cli/pull/9082
• fix: (some minor improvements to configs and getPackageJson return behaviour) by @grMLEqomlkkU5Eeinz4brIrOVCUCkJuN in https://github.com/google-gemini/gemini-cli/pull/12510
• feat(hooks): Hook Event Handling by @Edilmo in https://github.com/google-gemini/gemini-cli/pull/9097
• feat(hooks): Hook Agent Lifecycle Integration by @Edilmo in https://github.com/google-gemini/gemini-cli/pull/9105
• feat(core): Land bool for alternate system prompt. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/13764
• bug(core): Add default chat compression config. by @joshualitt in https://github.com/google-gemini/gemini-cli/pull/13766
• feat(model-availability): introduce ModelPolicy and PolicyCatalog by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/13751
• feat(hooks): Hook System Orchestration by @Edilmo in https://github.com/google-gemini/gemini-cli/pull/9102
• feat(config): add isModelAvailabilityServiceEnabled setting by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/13777
• chore/release: bump version to 0.19.0-nightly.20251125.f6d97d448 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/13782
• chore: remove console.error by @adamfweidman in https://github.com/google-gemini/gemini-cli/pull/13779
• fix: Add $schema property to settings.schema.json by @sacrosanctic in https://github.com/google-gemini/gemini-cli/pull/12763
• fix(cli): allow non-GitHub SCP-styled URLs for extension installation by @m0ps in https://github.com/google-gemini/gemini-cli/pull/13800
• fix(resume): allow passing a prompt via stdin while resuming using --resume by @bl-ue in https://github.com/google-gemini/gemini-cli/pull/13520
• feat(sessions): add /resume slash command to open the session browser by @bl-ue in https://github.com/google-gemini/gemini-cli/pull/13621
• docs(sessions): add documentation for chat recording and session management by @bl-ue in https://github.com/google-gemini/gemini-cli/pull/13667
• Fix TypeError: "URL.parse is not a function" for Node.js < v22 by @macarronesc in https://github.com/google-gemini/gemini-cli/pull/13698
• fallback to flash for TerminalQuota errors by @sehoon38 in https://github.com/google-gemini/gemini-cli/pull/13791
• Update Code Wiki README badge by @PatoBeltran in https://github.com/google-gemini/gemini-cli/pull/13768
• Add Databricks auth support and custom header option to gemini cli by @AarushiShah in https://github.com/google-gemini/gemini-cli/pull/11893
• Update dependency for modelcontextprotocol/sdk to 1.23.0 by @bbiggs in https://github.com/google-gemini/gemini-cli/pull/13827

New Contributors

• @vishvananda made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13488
• @pyrytakala made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13544
• @fancive made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13577
• @noahacgn made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13595
• @kkitase made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13548
• @grMLEqomlkkU5Eeinz4brIrOVCUCkJuN made their first contribution in https://github.com/google-gemini/gemini-cli/pull/12510
• @sacrosanctic made their first contribution in https://github.com/google-gemini/gemini-cli/pull/12763
• @m0ps made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13800
• @macarronesc made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13698
• @PatoBeltran made their first contribution in https://github.com/google-gemini/gemini-cli/pull/13768
• @AarushiShah made their first contribution in https://github.com/google-gemini/gemini-cli/pull/11893

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.18.0-preview.4...v0.19.0-preview.0