Maps a citation's full provenance onto v1's two-value context_sources.document_type, which PR7
must keep writing for compatibility with the legacy forms UI. EMR-sourced evidence is a patient
evaluation; everything else is a pdf. The unmapped documentType stays on the citation, so the
lossy projection is the compatibility shim and not the record.
Maps a citation's full provenance onto v1's two-value
context_sources.document_type, which PR7 must keep writing for compatibility with the legacy forms UI. EMR-sourced evidence is a patient evaluation; everything else is a pdf. The unmappeddocumentTypestays on the citation, so the lossy projection is the compatibility shim and not the record.