Release v0.66.0-preview.0

What's Changed

Update ROADMAP.md to no longer reference outdated 2025 roadmap by @DavidAPierce in #29723
Changelog for v0.65.0-preview.0 by @gemini-cli-robot in #29739
chore(release): bump version to 0.66.0-nightly.20261013.g204db94ae by @gemini-cli-robot in #29740
Changelog for v0.64.0 by @gemini-cli-robot in #29741
fix(ui): implement synchronized output and isolate spinner rendering by @diegogodinezr in #29725
fix(ui): fix debug console height calculation and terminalBuffer flickering by @ugorla-dev in #29695
fix(cli): prevent right-hand border bleed in scrollable tool containers by @villahernandez-coder in #29742
refactor(core,cli): emit tool call groups from the scheduler and drop the UI lookahead by @jesussamuel-byte in #29736
fix(core): format and quote Windows diff command arguments in openDiff by @jvargassanchez-dot in #29753
fix(cli): round before selecting units in formatDuration by @diegogodinezr in #29766
fix(core): disable interactive credential and SSH prompts in getSafeGitEnv by @villahernandez-coder in #29760
fix(cli): resolve settings placeholders after loading .env files by @elberthc-byte in #29750
fix(core): harden SKILL.md frontmatter parsing for single-line descriptions by @jesussamuel-byte in #29769
Add Banner about Gemini CLI not being optimized for Gemini 4 by @srithreepo in #29774
Update README to remove obsolete content by @srithreepo in #29775
fix(ci): remove unsupported members permission in unassign-inactive-assignees workflow by @ugorla-dev in #29770
fix(cli): reset slash-command conflict dedupe when conflicts reappear by @jvargassanchez-dot in #29768
fix(cli): verify active binary update to prevent PATH shadowing false success by @urielefrenvirtusa in #29757
fix(cli): support 'keys' array in keybindings.json by @urielefrenvirtusa in #29773
fix(cli): forward termination signals from bootstrap parent to child process by @villahernandez-coder in #29790
fix(ui): preserve terminal scrollback during viewport refreshes by @diegogodinezr in #29792
fix(cli): decode streamed Node HTTP activity chunks with StringDecoder by @jesussamuel-byte in #29827
chore: migrate gsutil usage to gcloud storage by @gurusai-voleti in #29839
fix(core): preserve user-level ~/.gitconfig in shell and git environments by @jesussamuel-byte in #29832
fix(core): prevent false positive matches in isAuthenticationError by @urielefrenvirtusa in #29835
fix(core): support opt-in private network endpoints for MCP OAuth flows by @luisfelipe-alt in #29844

New Contributors

@gurusai-voleti made their first contribution in #29839

Full Changelog: v0.65.0-preview.0...v0.66.0-preview.0