add-decision

name	add-decision
description	Record an architectural or statistical decision as an ADR. Use when a non-trivial modeling or API choice is made, or the maintainer says "record this decision".
allowed-tools	Read, Edit

Instructions

Append a filled ADR to project/DECISIONS.md using the house format, with the next sequential number:

## ADR-00N: <title>
- Date: <yyyy-mm-dd>
- Status: proposed | accepted | superseded
- Context: <why this came up>
- Decision: <what we chose>
- Consequences: <tradeoffs, what it rules out>
- References: <paper + equation / issue / package>

Keep it factual and specific. For a statistical decision, cite the source (paper + equation where possible) per PRINCIPLES.md #12, and note any oracle or live check that backs it. If the decision changes a principle or the public API, say so explicitly (PRINCIPLES.md #6 breaking changes require an ADR). If a Fable review informed the decision, record that it was used (PRINCIPLES.md #19).