- Rewrite diagnosis/procedure pivots from 25-iteration progressive
joins to conditional aggregation (group_by + when/then/max),
eliminating deeply nested SQL that caused sqlglot RecursionError
- Fix clm_line_srvc_unit_qty column reference (no _rev suffix needed,
column is unique to right side of join)
- Move _nullify_sentinel into claim_start_date/admission_date aliases
instead of producing extra clm_from_dt column that broke nw.concat
schema alignment across institutional/physician/DME claim types
- All transpile known failures resolved: 0 remaining
16e006fb5e
