30eb40c184
Custom folder names (e.g. "DKV" or "INBOX/DKV") now resolved by calling EWS FindFolder deep-search under inbox. Well-known names still map to DistinguishedFolderId directly. Falls back to inbox with a warning log when the subfolder cannot be found. IMAP already supported subfolder paths natively via ImapFlow. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>