List Excluded Chats

List the excluded (blacklisted) chats this member can see in the current workspace, across all accounts. Scoped like the inbox (src/lib/visibility.py): a teammate's exclusion on a shared channel shows up here, so it can be undone.

Returns threads where is_included=false, meaning they are excluded from:

• Thread listing
• RAG search results
• Sync operations

Args: limit: Maximum threads to return offset: Pagination offset channel: Optional filter by channel type (telegram, whatsapp, email)

Returns: List of excluded threads with account info