### Fixed - `slot(name, def)` now correctly warns if no slot or default is found. - Default slot fallback parsing now returns consistent `<template>` elements. - Internal devtools spy restored after each test for console warnings. ### Added - New test: `SlotWarning.test.js` to ensure slot warnings and fallback work. - Improved test suite coverage for `Computed`, `BusState`, `BoolAttrEffect`.