Explanation

Understanding-oriented. These pages argue for the choices rather than describe them, so they carry more voice than the reference does.

• Why there is no model in this yet — what a parser establishes that a model cannot, and why 74 unresolved preparations are the finding rather than the failure.
• Why the layers, on a project this small — what four layers buy when the code is 900 lines, and what they cost.

Decisions with a date and a status live in Decisions.