Expand WASM browser tests: 28 SX deftest forms
Added 13 new tests covering:
- Signal core: create, reset!, swap!, computed, effect re-run,
effect cleanup, batch
- DOM extended: nested elements, boolean attrs, nil attrs, multiple
children, HTML/DOM output match
- Reactive attrs: initial value, signal updates, nil removal,
multiple attrs on same element, multi-token spread
- Island scope: scope detection, disposer collection, context
visibility, defcomp rendering
- Conditional: if/when/cond/let/begin in render-to-dom
28/28 source, 28/28 bytecode.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
giles
e7fe6598c5