Bug fix for multi-ops with mod/rescale (#70)

* added current_rns into immediate naming to enable non-fresh multi-ops
* Fixed qiLastHalf to use current_rns in naming to avoid collisions in multi-ops

Author: christopherngutierrez

kerngen/pisa_generators/rescale.py

@@ -39,14 +39,17 @@ def to_pisa(self) -> list[PIsaOp]:
 
         # Immediates
         last_q = self.input0.rns - 1
-        one, r2, iq = common_immediates(r2_rns=last_q, iq_rns=last_q)
 
         one, r2, iq = common_immediates(
-            r2_rns=last_q, iq_rns=last_q, iq_suffix=self.var_suffix + f"_{self.context.current_rns}"
+            r2_rns=last_q,
+            iq_rns=last_q,
+            iq_suffix=self.var_suffix + f"_{self.context.current_rns}"
         )
 
         q_last_half = Polys("qLastHalf", 1, self.input0.rns)
-        q_i_last_half = Polys("qiLastHalf", 1, rns=last_q)
+        q_i_last_half = Polys(
+            "qiLastHalf" + f"_{self.context.current_rns}", 1, rns=last_q
+        )
 
         # split input
         input_last_rns, input_remaining_rns = split_last_rns_polys(