agent-orchestrator-benchmark/calculators/builder-adversary-deferred/run-01/machine-docs/BACKLOG-lex.md

BACKLOG — phase lex

Build backlog

All items completed.

• D1: Implement NUMBER token (int + float, including .5 and 10.)
• D2: Implement operator and paren tokens (PLUS, MINUS, STAR, SLASH, LPAREN, RPAREN)
• D3: Skip whitespace; raise LexError for invalid characters
• D4: Write calc/test_lexer.py with unittest coverage for D1–D3