Add 21 new tests: scope/context, multi-signal, reactive DOM, VM HO forms
WASM browser tests (web/tests/test-wasm-browser.sx): 32 tests
- scope/context: push+read, default, nesting, pop reveals outer
- multi-signal: effect tracks 2 signals, computed from 2 sources,
unsubscribe on dependency change
- reactive DOM: computed expression attrs, map rendering, component
rendering, spread signal update, style attributes
- conditional: if/when/cond/let/begin in render-to-dom
VM HO form tests (lib/tests/test-vm.sx): +8 tests
- map, filter, reduce, for-each, some, every? in vm-eval
- nested map, map with closure over local
32/32 WASM (source+bytecode), 1593/1593 JS full (1 pre-existing silent).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
giles
3d6f43260b