[loganj]

Summary

• The relay will refuse to make a private channel or Solo chat open when it has, or had, a member other than you and your own agents (Refuse opening a private channel that has other members buzz#9307). Before this change the app offered Public and View only anyway, and the change failed after you picked one.
• Now, when the app can tell that such a member is present, it greys out Public and View only with the reason "Has other members. Create a new public channel instead." This covers General access in Manage members (channels and Solo chats) and in Convert to channel.
• Sharing a Solo chat that has another person in it now stops with "This chat has other members, so it can't be shared. Create a new channel instead." It no longer saves an access change the relay would refuse.
• Private chats and channels that hold only you and your agents can still be opened, as before.

Details

• The relay decides. The app only predicts what the relay will do, and it greys out the options only when it has evidence:
  • A member that is in your agent list is yours.
  • A member whose verified owner is someone else blocks.
  • A member whose profile has loaded with no agent tag counts as a person and blocks, but only once your agent list has fully loaded.
  • A member whose profile has not loaded, or an agent with no verified owner, does not block. If the relay refuses, the existing error appears.
• Known limitation: if one of your own agents has a profile with no agent tag and is missing from your agent list, the app greys out opening even though the relay would allow it. You can still create a new channel.
• The app sees only current members. If a removed member makes the relay refuse, the options stay enabled and the relay's error appears.
• The check re-runs when profiles, owner verification or your agent list change. An owner can be verified after the profile loads, and that does not create a new profile snapshot.
• docs/buzz-help.md explains the rule.

Screenshots

A private channel with another person, in Manage members:

A private Solo chat with another person: Share, then General access:

The same chat in Convert to channel:

Testing

• Unit tests for the prediction, including an unloaded profile, an unverified agent, an agent list still loading, and owner verification that arrives after the profile.
• Component tests for General access, Convert to channel and Share.

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