Software-Engineering

17 RDR postmortems, 208 drift instances, one meta-lesson: specify interfaces not implementations, verify APIs against source code, and plan for the full scope including Day 2 ops.

Building Arcaneum using specification-first LLM development with RDRs, writing dozens of specs before a single line of Python code.

Introducing RDRs - specification documents that evolve during planning to prevent purpose drift and wasted implementation effort.