Build 2602261523: live updates, invite cleanup and nuclear resync

backend/app/db.py

@@ -1991,6 +1991,29 @@ def clear_history() -> Dict[str, int]:
     return {"actions": actions, "snapshots": snapshots}
 
 
+def clear_user_objects_nuclear() -> Dict[str, int]:
+    with _connect() as conn:
+        # Preserve admin accounts, but remove invite/profile references so profile rows can be deleted safely.
+        admin_reset = conn.execute(
+            """
+            UPDATE users
+            SET profile_id = NULL,
+                invited_by_code = NULL,
+                invited_at = NULL
+            WHERE role = 'admin'
+            """
+        ).rowcount
+        users = conn.execute("DELETE FROM users WHERE role != 'admin'").rowcount
+        invites = conn.execute("DELETE FROM signup_invites").rowcount
+        profiles = conn.execute("DELETE FROM user_profiles").rowcount
+    return {
+        "users": users,
+        "invites": invites,
+        "profiles": profiles,
+        "adminsReset": admin_reset,
+    }
+
+
 def cleanup_history(days: int) -> Dict[str, int]:
     if days <= 0:
         return {"actions": 0, "snapshots": 0}