Under the hood
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Artifact handover reads now return unread-line info that nothing currently consumes.
The artifact-handover-read function now returns a remaining field alongside artifactRead and commit, populated with unread-line info (path, slug, ver, lines, unterminated, unread) whenever a handover exists, the reader hasn't met the required-lines threshold, and the artifact was handed to that agent. No in-bundle call site currently reads this new field.
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Anthropic's release notes agree
Fixed Edit/Write/Read permission rules whose path contains parentheses being dropped as invalid or ignored by the Bash sandbox, which left…