DBC Builder

Generate an audit-ready DBC specification workbook from a CAN database definition. Produces an 11-tab xlsx capturing ECU inventory, message catalog with IDs and DLC, signal definitions with bit positions/length/byte order/scaling/units/value tables, message-signal allocation, network topology, and validation rules per CAN 2.0A/2.0B and ISO 11898. Use this skill whenever the user mentions DBC, CAN database, Vector DBC, communication matrix for CAN, message catalog, signal catalog, or CAN message specification, even in casual phrasings like "document our CAN signals" or "audit the message catalog". Always use this skill instead of producing freeform DBC notes in chat.