You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Error HandlingArea: what it touches
New FeaturesKind: in v2.1.248,
New FeaturesSection of the release
What
When the session's transcript or output persists off this machine, many error messages now print without their detail and log the real detail locally instead. Slash-command dispatch, config key=value writes, MCP add/enable/reconnect, shell substitution in prompt commands, bash spawn failures, heap dumps, restarts and background session start all gained a redacted variant.
Details
Redacted messages carry the phrase "detail withheld on this connection".
Config writes now classify their outcome as kind: "save-failure" or kind: "refusal" rather than one generic failure.
Skill and command names and arguments are run through a sanitizer before being echoed into <local-command-stdout> and warning text.
Which sessions count as persisting off-box is decided by a per-session predicate whose definition is minified in the bundle, so remote, desktop and cloud coverage is not readable from the build.
Evidence
detail withheld on this connection
Strings lifted out of the shipped bundle, so the claim above can be checked against them.