Gemini CLI 0.20.0

What's Changed

• Update error codes when process exiting the gemini cli
• chore(release): bump version to 0.20.0-nightly.20251126.d2a6cff4d
• feat(core): Improve request token calculation accuracy
• Changes in system instruction to adapt to gemini 3.0 to ensure that the CLI explains its actions before calling tools
• feat(hooks): Hook Tool Execution Integration
• Add support for MCP server instructions behind config option
• Update System Instructions for interactive vs non-interactive mode.
• Add consent flag to Link command
• feat(mcp): Inject GoogleCredentialProvider headers in McpClient
• feat(core): implement towards policy-driven model fallback mechanism
• feat(core): Add configurable inactivity timeout for shell commands
• fix(auth): improve API key authentication flow
• feat(hooks): Hook LLM Request/Response Integration
• feat(ui): Show waiting MCP servers in ConfigInitDisplay
• Add usage limit remaining in /stats
• feat(shell): Standardize pager to 'cat' for shell execution by model
• chore/release: bump version to 0.20.0-nightly.20251127.5bed97064
• Revert to default LICENSE (Revert #13449)
• update(telemetry): OTel API response event with finish reasons
• feat(hooks): Hooks Comprehensive Integration Testing
• chore: fix session browser test and skip hook system tests
• feat(telemetry): Add Semantic logging for to ApiRequestEvents
• test: Add verification for $schema property in settings schema
• Fixes /clear command to preserve input history for up-arrow navigation while still clearing the context window and screen
• fix(core): handle EPIPE error in hook runner when writing to stdin
• fix: Exclude web-fetch tool from executing in default non-interactive mode to avoid CLI hang.
• Always use MCP server instructions
• feat: auto-execute simple slash commands on Enter
• chore/release: bump version to 0.20.0-nightly.20251201.2fe609cb6
• feat: Add startup profiler to measure and record application initialization phases.
• bug(core): Avoid stateful tool use in executor.
• feat(themes): add built-in holiday theme 🎁
• Updated ToC on docs intro; updated title casing to match Google style
• feat(a2a): Urgent fix - Process modelInfo agent message
• feat(core): enhance availability routing with wrapped fallback and single-model policies
• chore(logging): log the problematic event for #12122
• fix: remove invalid type key in bug_report.yml
• update screenshot
• docs: Fix grammar error in Release Cadence (Nightly section)
• fix(async): prevent missed async errors from bypassing catch handlers
• fix(zed-integration): remove extra field from acp auth request
• feat(cli): Documentation for model configs.
• fix(ui): misaligned markdown table rendering
• docs: Update 4 files
• fix: Conditionally add set -eEuo pipefail in setup-github command
• fix(cli): fix issue updating a component while rendering a different component
• Increase flakey test timeout
• Remove references to deleted kind/bug label
• Don't fail test if we can't cleanup
• feat(core): Implement JIT context manager and setting
• Use polling for extensions-reload integration test
• Add docs directive to GEMINI.md
• Hide sessions that don't have user messages
• chore(ci): mark GitHub release as pre-release if not on "latest" npm channel
• fix(patch): cherry-pick d284fa6 to release/v0.20.0-preview.0-pr-14545 [CONFLICTS]
• fix(patch): cherry-pick 828afe1 to release/v0.20.0-preview.1-pr-14159 to patch version v0.20.0-preview.1 and create version 0.20.0-preview.2
• fix(patch): cherry-pick 171103a to release/v0.20.0-preview.2-pr-14742 to patch version v0.20.0-preview.2 and create version 0.20.0-preview.5