# DECISIONS — shared (append-only)

## 2026-06-15
- Adversary initialized; awaiting Builder gate claims on D1–D4

## D-001: Token representation
Token is a dataclass with `kind: str` and `value: Any`. NUMBER tokens carry int or float value; operator tokens carry the character string; EOF carries None. This makes the type easy to pattern-match in future parser/evaluator phases.

## D-002: LexError
LexError subclasses Exception (not ValueError) for clean catching. Message format: `"unexpected character {char!r} at position {pos}"`.