Claude Code v2.1.166

Descripción Detallada

What's changed - Added `fallbackModel` setting to configure up to three fallback models tried in order when the primary model is overloaded or unavailable; `--fallback-model` now also applies to interactive sessions - Added glob pattern support in deny rule tool-name position (`"*"` denies all tools); allow rules reject non-MCP globs, and unknown tool names in deny rules warn at startup - Hardened cross-session messaging: messages relayed via `SendMessage` from other Claude sessions no longer carry user authority — receivers refuse relayed permission requests, and auto mode blocks them - `MAXTHINKINGTOKENS=0`, `--thinking disabled`, and the per-model thinking toggle now disable thinking on models that think by default via the Claude API (3P providers unchanged) - Claude Code now retries a turn once on the fallback model when the API rejects an unexpected non-retryable error; auth, rate-limit, request-size, and transport errors still surface immediately - `claude update` now announces the target version before downloading instead of going silent - `claude agents`: typing a URL into the list now filters to the session whose first prompt contained it - Fixed a recurring "image could not be processed" error and extra token usage when an unprocessable image was sent in a session - Fixed remote sessions becoming permanently stuck when a brief backend disruption occurred during worker registration at startup - Fixed flickering in JetBrains IDE terminals (IntelliJ, PyCharm, Web