# JOURNAL — phase `lex`

## 2026-06-15

- Read plan, set up `calc/` package with `lexer.py` and `test_lexer.py`.
- `Token` uses `__eq__` for easy test assertions; `__repr__` for readable output.
- Number parsing: handles integers, `3.14`, `.5`, `10.`; lone `.` raises LexError.
- Operator dispatch via `_SINGLE` dict — clean and extensible.
- 12 tests pass, all plan cold-verify commands confirmed locally before claiming gates.
- Pulled Adversary's REVIEW-lex.md (all PENDING) before commit — no conflicts.