Adds src/components/multiselect.js — a compact dropdown multi-select that is
Observable-compatible (exposes .value, dispatches bubbling input events) so it
works with view(), Inputs.form, and Generators.input without modification.
Component behaviour:
- Closed state: pill button showing "Label: All" (muted) or active selection
(1-2 items shown by name, 3+ shown as "N of M"); blue border when active
- Open state: dropdown with per-item checkboxes + "Clear selection" link
(only visible when something is selected); closes on outside click / Escape
- Styles injected once into document.head (STYLE_ID guard prevents duplicates)
- Uses CSS custom properties for light/dark mode compatibility
Workstreams page update:
- Domain and Status filters now use MultiSelect instead of Inputs.checkbox
- Filter bar layout reduced to a tight inline row (0.5rem gap)
- Owner text filter restyled to match trigger button height
- No changes to filter logic or downstream cells (filters.domain / .status
are still string[] with empty = show all)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
