Add requirement HLR-20.107.010-024 for CEx-IE

Added requirement HLR-20.107.010-024 regarding CEx-IE behavior.

Author: CuriousOne23

thought_simulator/requirements_20/20.107.010_cex-ie_primitive.md

@@ -222,6 +222,9 @@ CEx‑IE SHALL emit all hint fields even when their value is `none` or `unknown`
 **HLR‑20.107.010‑023**  
 CEx‑IE SHALL NOT modify `TP.intake`, `TP.structure`, `TP.metadata.repair_annotations`, or any other upstream fields; it SHALL only read these fields and write to `TP.cex.ie`.
 
+**HLR‑20.107.010‑024**
+CEx-IE SHALL NOT emit pack_ids[] and SHALL NOT treat register_hint as a pack key.
+
 ---
 
 ## 7. Processing Summary *(Informative)*