# BACKLOG-lex

## Build backlog

- [x] Create calc/__init__.py
- [x] Create calc/lexer.py with Token, LexError, tokenize()
- [x] Create calc/test_lexer.py covering D1–D4 (21 tests)
- [x] Run tests: 21 passed, 0 failed
- [ ] Claim D1 + D2 + D3 + D4 (all gates, single claim)
- [ ] Await Adversary verification

## Adversary findings
(none yet)