New env vars override model capability detection for Bedrock/Vertex/Foundry; Windows gains PowerShell preview; 13 fixes address 3 hangs, 2 leaks, and a cold-start race condition.
ANTHROPIC_DEFAULT_{OPUS,SONNET,HAIKU}_MODEL_SUPPORTS env vars to override effort/thinking capability detection for pinned default models for 3p (Bedrock, Vertex, Foundry), and _MODEL_NAME/_DESCRIPTION to customize the /model picker labelCLAUDE_STREAM_IDLE_TIMEOUT_MS env var to configure the streaming idle watchdog threshold (default 90s)TaskCreated hook that fires when a task is created via TaskCreateWorktreeCreate hook support for type: "http" — return the created worktree path via hookSpecificOutput.worktreePath in the response JSONallowedChannelPlugins managed setting for team/enterprise admins to define a channel plugin allowlistx-client-request-id header to API requests for debugging timeouts/clear, reducing unnecessary token re-caching on stale sessionsC:\, C:\Windows, etc.)setup() in parallel with slash command and agent loadingclaude "prompt" with MCP servers — the REPL now renders immediately instead of blocking until all servers connectCtrl+U (kill-to-line-start) being a no-op at line boundaries in multiline input, so repeated Ctrl+U now clears across lines"ctrl+x ctrl+k": null) still entering chord-wait mode instead of freeing the prefix key--json-schema and the subagent also specifies a schemaEdit(.claude) allow rulesowner/repo#123 — bare #123 is no longer auto-linkedclaude-cli://) now open in your preferred terminal instead of whichever terminal happens to be first in the detection listpaths: frontmatter now accepts a YAML list of globsToolSearch is enabled, including for users with MCP tools configured/voice, /mobile, /chrome, /upgrade, etc.) are now hidden instead of shown