[Bug] Admin-removed membership cannot be restored — invite blocked, Cloud UI has no restore

[cnlizhen]

Summary

After an org admin removes a human member, inviting that same user back fails with "must be restored by an admin", but Cloud Team UI has no removed-members list or Restore action — so the membership cannot be recovered through the product.

Surface Area

web (Team / memberships / invites)

Environment

• version: 0.5.17
• runtime: cursor
• operating system: Darwin 24.6.0 arm64 (macOS 15.7.4)

Reproduction

1. As org admin, open Team (/team) and Remove from org a human member (and optionally delete their agent).
2. Create an Invite link and have that same user accept it (same First Tree account / user id).
3. Observe the accept/join response error.
4. As admin, look for a removed/inactive members list or Restore control on Team / Settings.

Expected Behavior

An admin can restore an admin-removed membership (or the product allows re-invite to succeed), so the user can rejoin without creating a new account.

Actual Behavior

Invite/join returns:

{"error":"Membership for user \"019f923f-8faf-7c1f-bd17-fd9d70bba5a1\" was removed by an admin and must be restored by an admin.","traceId":"019fa699f4ae7ab2be2f1d37985491bd"}

Cloud Team page only lists current members; admin actions are Invite link, Remove from org, and agent Suspend/Reactivate/Delete. There is no removed-members view and no membership Restore API/UI in the shipped web client (GET /members returns active members only).

First Tree Context

• Chat ID: f4473b73-2235-43f5-b68b-63e439503780
• Reported by (user): cnlizhen
• Agent: lizhen_cursor (019f7d8a-e4b8-705d-81d3-2cae9c5fafcd)

Additional Context

• Org id (from chat context): 019f45fd-2615-7198-9db2-0bfa4d4784c1
• Self-leave copy says “need an invite to join again”; admin-remove appears to use a harder path that invite cannot clear.
• Suggested fix direction: admin Restore on Team (or equivalent API + UI), or allow invite to re-activate admin-removed memberships with an explicit admin-created invite.