Merged in bugfix/default_ind_postprocess (pull request #887)

Bugfix/default ind postprocess

* Add logic to standardize UNIT_OF_MEASURE for flat-rate reimbursement methods

- Implemented functionality in `standardize_reimb_method_and_fee_schedule` to set UNIT_OF_MEASURE to blank for rows where DEFAULT_IND is 'Y' and AARETE_DERIVED_REIMB_METHOD is 'flat rate'.
- Added unit tests to verify behavior for various scenarios, including case insensitivity and non-default conditions.
- Ensured that UNIT_OF_MEASURE remains unchanged for non-flat rate methods.

* Enhance child rank handling and ensure column consistency in parent-child mapping

- Added initialization for the `child_rank` column in both parents and children DataFrames to prevent KeyError during concatenation when no children exist.
- Updated `cols_to_keep` in `parent_child_mapping` to filter out columns not present in `pc_df`, ensuring robustness in data processing.

* Ran Black

* made a small change in code_last_check, fixed so it returns string and not single char

* Made changes to make sure that default_ind postprocess only happens to the cc output and not dashboard

* Merged DEV into bugfix/default_ind_postprocess

* Restore deleted AARETE_DERIVED_PAYER_NAME functions

Functions were removed during previous commit. Restored from DEV to fix
AttributeError in prompt_calls.py.

* Simplify code_last_check return logic and add error logging

- Simplified return to single line with fallback
- Added error logging for failed LLM response parsing


Approved-by: Siddhant Medar

src/codes/code_funcs.py

@@ -489,11 +489,13 @@ def code_last_check(service, filename):
     )
     try:
         llm_answer_final = _parser(llm_answer_raw)
-        return llm_answer_final[0]
-    except:
+        return llm_answer_final if llm_answer_final else "Generic"
+    except Exception:
+        logging.error(
+            "Failed to parse LLM response in code_last_check: %s", llm_answer_raw
+        )
         return "Generic"
 
-
 def fill_bill_type(
     service,
     answer_dict,