Engine requirement (full spec)
The full engine specification is at doc/ChainAPI - Engine Requirement.md in the source tree.
Sections:
- §3 Functional acceptance criteria (40+ AC items)
- §4 State machines (operation step, session, resource extraction, run, schema load)
- §5 Error taxonomy
- §6 Concurrency and cancellation
- §7 Edge cases
- §8 Test scenarios (QA-ready)
This page will eventually inline the spec for offline reading. For now the source markdown is canonical.