# Architectural decisions

Each decision is recorded in the standard *Context / Decision / Consequences / Status* form.
**An ADR is immutable once accepted.** Superseding one means writing a new ADR that
references it, never editing the old one — the reasoning that was wrong is part of the
record, and ADR-001 is the worked example of why.

The full list, including decisions whose records are still to be written up, is PRD 12.4.

```{toctree}
:maxdepth: 1

0001-pure-stdlib-python
0013-dependency-vendoring-reaffirmed
0014-analytic-parameters-on-the-core-contract
0015-datum-from-geometry-not-parametric-window
0016-license-mpl-2.0
```