Claude Code 2.1.318 stops installing the IDE extension from IDE terminals and warns before a claude.ai sign-in expires

Claude Code v2.1.318, released November 3, 2026, per its release notes:

• Sign-in expiry: claude auth status shows the date a stored claude.ai sign-in ends (loginExpiresAt), and claude -p JSON results carry credential_expires_at. claude -p text output prints a one-line stderr warning starting 10 days before the sign-in ends, and the failure message once it has ended names claude auth login and claude setup-token.
• Mods: Claude Code keeps a record of your answer when it asks to turn on the mods it writes in a session; a mod's $.model.fork takes an effort option so a quick side job can run at low effort; what a mod attaches at prompt.submit now stays in the user's turn instead of going out as a system message.
• Claude apps gateway: assume_role on mantle upstreams, for a role in another AWS account and per-developer AWS cost attribution.
• Behavior changes: Claude Code no longer installs or updates the IDE extension when started in an IDE terminal (use /ide from an outside terminal or the editor's extensions view). Subagents stop, rather than switch models, when "Switch models when a message is flagged" is set to "Ask each time". Background subagents move a shell command to the background after 3 minutes on all providers, so the prompt cache does not expire while it runs. deniedMcpServers URL entries also block Anthropic-provided servers whose upstream URL matches, and connectors in cloud sessions and on self-hosted runners.
• Managed agents: /claude-api managed-agents-onboard gives a new agent's built-in tools and a quickstart template's MCP tools the "Judge risky actions" auto permission policy by default, matching the Claude Console; saying "run without asking" opts out.
• Cloud sessions: a "No repository" option lets a session on an Anthropic-hosted environment start without picking a repository.
• Notable fixes: a regression from 2.1.314 that could make --continue lose the earlier conversation; macOS sessions with many running Bash commands stalling; many fixes for ~/.claude.json, settings and stored logins on shared network home directories; every connection failing when the NODE_EXTRA_CA_CERTS file is empty or damaged.

The release also carries many smaller fixes for the VS Code extension, self-hosted runners, cloud sessions, Remote Control and the gateway.