Subagent forking is now on by default in Claude Code 2.1.232
Also: sessions @-message each other, GitLab joins plugin marketplaces, /code-review goes background, and DeepSeek-V4-Pro hits GA before its price hike.
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Forks inherit your whole session now
Subagent forking ships on by default: forks now inherit the full conversation and prompt cache, so you can split off a background agent mid-task without re-priming it. Non-teammate agents in interactive sessions spawn in the background automatically.
Sessions can @-mention each other
Type @ plus another session's name and Claude routes a message to it via SendMessage, so two terminals coordinate without copy-paste. New /config rows ('Messages from your other sessions' and 'Dialog expiry') let you accept, hold, or refuse inbound pings.
GitLab repos install like GitHub
Plugin marketplaces now accept bare gitlab.com URLs and clone them just like github.com, and the glab CLI gets the same sandbox treatment as gh. Secret redaction expands to GitLab token families (glrt-, gloas-, glptt- and more).
/code-review runs in the background
At high, xhigh, or max effort, /code-review now spawns as a background agent instead of blocking your session, so you can kick off a deep review and keep coding. Plugin installs also refresh marketplaces first, fixing 'not found' errors on freshly published packages.
Update: DeepSeek-V4-Pro hits GA
V4-Pro is now generally available with native OpenAI Responses API support, Codex integration, and low/high/max reasoning effort. The catch we flagged stands: the up-to-1,100% API price hike takes effect 16:00 UTC on Aug 16, with off-peak rates 50% below peak.
Patch Windows and Linux sandbox escapes
2.1.232 closes 19 bugs, including a PowerShell variable-overwrite permission bypass, Git Bash symlink traversal, and nested-repo trust inheritance on Windows, plus Linux sandbox hardening. If you run Claude Code on Windows, update now.