giles f1ba7177e7 Step 18 (part 3): Expand parser — expressions, commands, features ...

Tokenizer:
  * and % now emit as operators (were silently swallowed)
  Added keywords: install, measure, behavior, called
  5 new arithmetic operator tests

Parser — expression layer:
  Arithmetic (+, -, *, /, %) via parse-arith
  Unary not, no, unary minus
  the X of Y possessive (parse-the-expr)
  as Type conversion, X in Y membership, array literals [...]
  fetch URL parsing fixed — no longer consumes "as" meant for fetch

Parser — 8 new commands:
  return, throw, append...to, tell...end, for...in...end,
  make a Type, install Behavior, measure

Parser — 2 new features:
  def name(params)...end, behavior Name(params)...end

Parser — enhanced:
  wait for event [from target], on every event modifier

33 new parser tests (16 suites), 5 tokenizer tests.
3043/3043 full build, zero regressions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-06 08:21:02 +00:00

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