Every budget is a different Excel
A regional film fund receives production cost calculations in every conceivable Excel format – exports from the industry's standard calculation software, hand-built sheets, bilingual layouts. The import pipeline works in three stages: an LLM reads only the layout of a masked digest and returns a machine-executable structure spec, deterministic code applies it to the real cells, and mapping onto the industry-standard account tree is done by recommenders – deterministic first, LLM last. In real-world testing, 20 of 22 projects were imported, with over 90% of positions auto-mapped.