BUS Core is launched: deterministic inventory + manufacturing ledger (open source)

I just launched BUS Core — a deterministic microkernel ledger for inventory + manufacturing in small shops.

Core philosophy: no guessing. Explicit authority boundaries, invariant enforcement, fail-fast behavior. If the data can’t be trusted, nothing else matters.

I’m looking for sharp real-world input: what’s the single most painful inventory/manufacturing workflow you deal with today? (receiving, adjustments, BOMs, partial builds, scrap, costing, etc.)