Sub-domains with different accounts

Description:
Website sporting.pt and lojaverde.sporting.pt hace different accounts and passwords but iCloud Passwords is basically merging them as one so I can't store password for one of them since I can't manually separate them or create individual ones for each.

Suggestion: sub-domains where password doesn't seem to match could get a prompt to "create new entry or merge?" Something along those lines.

No files, tests, or entry points are identified in the issue. Start by reviewing how the repository represents password-manager behavior for subdomains, then determine where the proposed choice between creating a new entry and merging would belong; done means the separate-account behavior and its expected prompt are documented clearly enough to implement.

Written by the indexing model from the issue text.