himalaya/cairn/changes/managesieve-support/tasks.md

cairn	id	status
change-tasks	managesieve-support	landed

• Add the optional Sieve account configuration and feature gate.
• Implement ManageSieve transport, authentication, literals, and status handling.
• Add Himalaya-style protocol commands and JSON schemas.
• Add configuration and command documentation.
• Add local parser and fake-server tests.
• Run formatting, feature-matrix builds, and the full test suite.
• Fold the change into current Cairn specs and write a landing log.