feat: add bulk triage view component and related stories

- Exported BulkTriageViewComponent and its related types from findings module.
- Created a new accessibility test suite for score components using axe-core.
- Introduced design tokens for score components to standardize styling.
- Enhanced score breakdown popover for mobile responsiveness with drag handle.
- Added date range selector functionality to score history chart component.
- Implemented unit tests for date range selector in score history chart.
- Created Storybook stories for bulk triage view and score history chart with date range selector.

docs/ui/components/score-pill.md

@@ -0,0 +1,116 @@
+# ScorePillComponent
+
+Compact score display component with bucket-based color coding.
+
+## Overview
+
+The `ScorePillComponent` displays a 0-100 evidence-weighted score with automatic color coding based on priority bucket thresholds.
+
+## Selector
+
+```html
+<stella-score-pill />
+```
+
+## Inputs
+
+| Input | Type | Default | Description |
+|-------|------|---------|-------------|
+| `score` | `number` | `0` | Evidence-weighted score (0-100) |
+| `size` | `'sm' \| 'md' \| 'lg'` | `'md'` | Size variant |
+| `showTooltip` | `boolean` | `true` | Show bucket tooltip on hover |
+| `interactive` | `boolean` | `true` | Enable hover/click interactions |
+
+## Outputs
+
+| Output | Type | Description |
+|--------|------|-------------|
+| `scoreClick` | `EventEmitter<number>` | Emits when the pill is clicked |
+
+## Size Variants
+
+| Size | Dimensions | Font Size | Use Case |
+|------|------------|-----------|----------|
+| `sm` | 24x20px | 12px | Tables, compact lists |
+| `md` | 32x24px | 14px | Standard UI elements |
+| `lg` | 40x28px | 16px | Dashboard emphasis |
+
+## Color Mapping
+
+The pill automatically applies colors based on score:
+
+```typescript
+// Score -> Bucket -> Color
+score >= 90  // ActNow       -> #DC2626 (red)
+score >= 70  // ScheduleNext -> #D97706 (amber)
+score >= 40  // Investigate  -> #2563EB (blue)
+score < 40   // Watchlist    -> #6B7280 (gray)
+```
+
+## Usage Examples
+
+### Basic Usage
+
+```html
+<stella-score-pill [score]="78" />
+```
+
+### In a Table
+
+```html
+<td>
+  <stella-score-pill [score]="finding.score" size="sm" />
+</td>
+```
+
+### All Sizes
+
+```html
+<stella-score-pill [score]="78" size="sm" />
+<stella-score-pill [score]="78" size="md" />
+<stella-score-pill [score]="78" size="lg" />
+```
+
+### Non-Interactive
+
+```html
+<stella-score-pill [score]="78" [interactive]="false" />
+```
+
+### With Click Handler
+
+```html
+<stella-score-pill
+  [score]="78"
+  (scoreClick)="openScoreDetails($event)"
+/>
+```
+
+```typescript
+openScoreDetails(score: number): void {
+  // Handle click - typically opens breakdown popover
+}
+```
+
+## Accessibility
+
+- Uses `role="status"` for screen reader announcements
+- `aria-label` includes bucket name: "Score 78: Schedule Next"
+- Focusable when interactive
+- Supports keyboard activation (Enter/Space)
+
+## Styling
+
+The component uses Shadow DOM encapsulation. Override styles using CSS custom properties:
+
+```css
+stella-score-pill {
+  --score-pill-border-radius: 4px;
+  --score-pill-font-weight: 600;
+}
+```
+
+## Related Components
+
+- [ScoreBreakdownPopover](./score-breakdown-popover.md) - Detailed breakdown on click
+- [ScoreBadge](./score-badge.md) - Evidence flag badges