Merge metadata from multiple parser outputs

Sources are applied in priority order: spss_mono > spss_split > sas_cards > lfs_csv > cpss_csv. For each variable / code, the highest-priority source provides the English label; French labels fill in from lower-priority sources when missing. Conflicting missing ranges or English code labels emit warnings.

Usage

merge_metadata(parsed_list)

Arguments

parsed_list

Named list of parser outputs (each a list with elements variables, codes, and layout).

Value

Single merged canonical metadata list.