fix(datacopy): use pg_get_serial_sequence(text, text) overload — verified against local PG 18

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 needs a regclass (or table+column text); %I keeps
-            // the exact case EF used, and ::regclass resolves it unambiguously
+            // pg_get_serial_sequence(text, text) — verified signature. format('%I', ...)
+            // preserves the exact table case EF used; the column is passed as plain text.
             await target.Database.ExecuteSqlRawAsync(
-                $"SELECT setval(pg_get_serial_sequence(format('%I', '{table}')::regclass, '{pkName}'), {max})");
+                $"SELECT setval(pg_get_serial_sequence(format('%I', '{table}'), '{pkName}'), {max})");
         }
         Console.WriteLine($"\n[done ] {table}: copied={copied}, maxId={max}");
     }