FNOL Normalizer

Normalize raw first-notice-of-loss (FNOL) intake into the standard claim schema — deterministically map free-text loss-type and cause values to the controlled vocabulary, validate required fields, check date sanity, and flag missing or unmappable values — producing a normalized record plus a cited exception list for a FNOL specialist to review. Use when an intake specialist asks to "normalize this FNOL", "standardize the loss codes", "clean up the intake record", or "check the FNOL for missing fields". HARD BOUNDARY: R3 decision-support only — it NEVER determines coverage, assigns liability or fault, sets a reserve, or opens/ routes a claim as an action; it only standardi…