fix(datacopy): cast format('%I') result to regclass for pg_get_serial_sequence

src/GreenHome.DataCopy/Program.cs

@@ -169,10 +169,10 @@ internal static class Program
         if (max > 0)
         {
             // Keep the identity sequence above the copied max so new rows don't collide.
-            // pg_get_serial_sequence takes one regclass; %I keeps the exact case EF
-            // used (unquoted literals fold to lowercase -> 42P01)
+            // pg_get_serial_sequence needs a regclass (or table+column text); %I keeps
+            // the exact case EF used, and ::regclass resolves it unambiguously
             await target.Database.ExecuteSqlRawAsync(
-                $"SELECT setval(pg_get_serial_sequence(format('%I', '{table}')), {max})");
+                $"SELECT setval(pg_get_serial_sequence(format('%I', '{table}')::regclass, '{pkName}'), {max})");
         }
         Console.WriteLine($"\n[done ] {table}: copied={copied}, maxId={max}");
     }