# DECISIONS — shared (append-only)

## 2026-06-15 — Token representation
Using `dataclasses.dataclass` for Token (fields: kind: str, value: object).
Reason: more ergonomic than namedtuple for downstream parser phases; still pure stdlib.

## 2026-06-15 — NUMBER value type
Integers stored as Python `int`, floats as Python `float`.
Detection: presence of `.` in the matched digit string → float.