Gemini CLI 0.67.0-nightly.20261031.g6814e00d6

What's Changed

• fix(core): honor .git/info/exclude and core.excludesFile in shadow repo by @urielefrenvirtusa in #30034
• fix(core): flush pending SSE event buffer at stream EOF in CodeAssistServer by @tadipavan in #30050
• fix(core): handle Windows libuv zero-device stat reporting in readSecureFileBuffer by @jvargassanchez-dot in #30044
• fix(cli): serialize concurrent extension installs with per-extension lock (#29036) by @diegogodinezr in #30039
• fix(core): resolve symlinked paths canonically in GlobTool by @ugorla-dev in #30042
• fix(cli): add missing active and focus keys to custom theme ui schema by @villahernandez-coder in #30032
• fix(core,cli): preserve selected model across transient fallback, cancel, and rewind by @villahernandez-coder in #30059

Full Changelog: v0.67.0-nightly.20261030.gb633c0703...v0.67.0-nightly.20261031.g6814e00d6