domainaware/parsedmarc 9.11.0 on GitHub

Mailbox backends now live in mailsuite>=2.0.0. The IMAPConnection, MSGraphConnection, GmailConnection, MaildirConnection, and MailboxConnection implementations were extracted into mailsuite 2.0.0 so other projects can reuse the same provider-agnostic interface. parsedmarc's parsedmarc.mail package is now a thin re-export of mailsuite.mailbox; existing imports (from parsedmarc.mail import IMAPConnection, etc.) continue to work unchanged. The CLI passes token_cache_name="parsedmarc" and forwards the existing [msgraph] graph_url config knob so cached AuthenticationRecords and tokens carry over without re-prompting.
MSGraph backend rewritten on msgraph-sdk (kiota-based). mailsuite 2.0 replaces the retired msgraph-core==0.2.2 REST wrapper with the supported msgraph-sdk client. End-user behavior is unchanged.
Direct dependencies on msgraph-core, imapclient, google-api-core, google-api-python-client, google-auth-httplib2, google-auth-oauthlib, and google-auth removed. They are now installed transitively via mailsuite[gmail,msgraph]>=2.0.0, which is included as a non-optional dependency so Gmail and Microsoft Graph support remain available out of the box.