The onSwap migration turned filter_bar.js, range_slider.js, and
search_select.js into ES modules that register via htmx.onLoad. The five
filter synthetic e2e pages still loaded them as classic `<script defer>`
with no htmx present, so the `import { onSwap }` line was a SyntaxError and
no widget ever initialized — 18 failing tests.
Load htmx.min.js first (classic) and the three widgets as `type="module"`,
mirroring how Page() serves them in the real app. date_range_picker.js
stays a classic defer script (it is an IIFE, not a module).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
lukas
