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

cairn	id	status	created
change	managesieve-support	landed	2026-08-24

ManageSieve support

Himalaya accounts that use Dovecot or another RFC 5804 ManageSieve server should be able to inspect and maintain their server-side Sieve scripts through the same account-scoped CLI style as the existing protocol modules.

This change adds an optional sieve account transport and a protocol module covering capability discovery, script listing and retrieval, upload and validation, activation/deactivation, deletion, and a diagnostic raw command. The wire framing stays isolated from the CLI so literal strings, CRLFs, and server status responses can be tested with a local fake server first.