feat: *= /= operators + 6 new array methods
New assignment operators (full pipeline: lexer → parser → analyzer → codegen):
- *= (MulAssign): count *= 2
- /= (DivAssign): count /= 2
New array methods in event handler (all flush signal + stream diff):
- .clear() → items = []
- .insert(i, v) → splice at index
- .sort() → immutable sort
- .reverse() → immutable reverse
- .filter(fn) → filter in place
- .map(fn) → map in place
New example: language-features.ds (65KB)
- Tests all assignment ops (+=, -=, *=, /=)
- Tests array methods (push, pop, sort, reverse, clear)
- Tests match expressions
- Tests comparison operators
- Tests derived signals (let doubled = count * 2)
- Browser-verified: zero console errors
All 11 examples pass.
f4e5ace37c