Tonight's lightning demos

Nebenkostenabrechnung scanner — Claude reads my landlord's math

A tool that ingests the annual Nebenkostenabrechnung PDF from your landlord, extracts the line items, and has Claude sanity-check the allocations against typical rates and your contract. Want feedback on the prompt design for catching the sneaky stuff (Hausmeister hours, Verwaltungskosten passed through, allocation keys that don't match Wohnfläche).