feat(solo): BatchEnqueueBlockerDialog component

Nieuw dialoogvenster dat gebruiker waarschuwt bij gedetecteerde blocker: toont blockerReason in NL, prefixCount taken vóór blokkade, confirm-knop (disabled met tooltip bij count=0) en annuleer-knop. 7 tests voor rendering, click-handlers en disabled-state.

__tests__/components/solo/batch-enqueue-blocker-dialog.test.tsx

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+// @vitest-environment jsdom
+import '@testing-library/jest-dom'
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { render, screen, fireEvent } from '@testing-library/react'
+
+vi.mock('@/components/ui/dialog', () => ({
+  Dialog: ({ open, children }: { open: boolean; onOpenChange?: (v: boolean) => void; children: React.ReactNode }) =>
+    open ? <div data-testid="dialog">{children}</div> : null,
+  DialogContent: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+  DialogHeader: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+  DialogTitle: ({ children }: { children: React.ReactNode }) => <h2>{children}</h2>,
+}))
+vi.mock('@/components/ui/button', () => ({
+  Button: ({
+    children,
+    onClick,
+    disabled,
+    variant,
+  }: {
+    children?: React.ReactNode
+    onClick?: () => void
+    disabled?: boolean
+    variant?: string
+  }) => (
+    <button onClick={onClick} disabled={disabled} data-variant={variant}>
+      {children}
+    </button>
+  ),
+}))
+vi.mock('@/components/ui/tooltip', () => ({
+  TooltipProvider: ({ children }: { children: React.ReactNode }) => <>{children}</>,
+  Tooltip: ({ children }: { children: React.ReactNode }) => <>{children}</>,
+  TooltipTrigger: ({ render: r, children }: { render?: React.ReactElement; children?: React.ReactNode }) =>
+    r ? <>{r}</> : <>{children}</>,
+  TooltipContent: ({ children }: { children: React.ReactNode }) => (
+    <span data-testid="tooltip-content">{children}</span>
+  ),
+}))
+
+import { BatchEnqueueBlockerDialog } from '@/components/solo/batch-enqueue-blocker-dialog'
+
+const DEFAULT_PROPS = {
+  open: true,
+  onOpenChange: vi.fn(),
+  prefixCount: 3,
+  blockerReason: 'task-review' as const,
+  blockerLabel: 'Story X — Task Y (in review)',
+  onConfirm: vi.fn(),
+  onCancel: vi.fn(),
+}
+
+beforeEach(() => {
+  vi.clearAllMocks()
+})
+
+describe('BatchEnqueueBlockerDialog', () => {
+  it('renders title and blocker info for task-review', () => {
+    render(<BatchEnqueueBlockerDialog {...DEFAULT_PROPS} />)
+
+    expect(screen.getByRole('heading')).toHaveTextContent('Blokkade gedetecteerd')
+    expect(screen.getByText(/Een taak staat op 'review'/)).toBeInTheDocument()
+    expect(screen.getByText(/Story X — Task Y/)).toBeInTheDocument()
+  })
+
+  it('renders correct blocker label for pbi-blocked', () => {
+    render(
+      <BatchEnqueueBlockerDialog
+        {...DEFAULT_PROPS}
+        blockerReason="pbi-blocked"
+        blockerLabel="PBI Z — geblokkeerd"
+      />
+    )
+
+    expect(screen.getByText(/De PBI is geblokkeerd/)).toBeInTheDocument()
+    expect(screen.getByText(/PBI Z/)).toBeInTheDocument()
+  })
+
+  it('calls onConfirm when primary button is clicked', () => {
+    render(<BatchEnqueueBlockerDialog {...DEFAULT_PROPS} />)
+
+    fireEvent.click(screen.getByText(/Stuur 3 taken tot aan blokkade/))
+
+    expect(DEFAULT_PROPS.onConfirm).toHaveBeenCalledTimes(1)
+  })
+
+  it('calls onCancel when cancel button is clicked', () => {
+    render(<BatchEnqueueBlockerDialog {...DEFAULT_PROPS} />)
+
+    fireEvent.click(screen.getByText('Annuleer'))
+
+    expect(DEFAULT_PROPS.onCancel).toHaveBeenCalledTimes(1)
+  })
+
+  it('disables confirm button and shows tooltip when prefixCount is 0', () => {
+    render(<BatchEnqueueBlockerDialog {...DEFAULT_PROPS} prefixCount={0} />)
+
+    const confirmBtn = screen.getByText(/Stuur 0/).closest('button')
+    expect(confirmBtn).toBeDisabled()
+    expect(screen.getByTestId('tooltip-content')).toHaveTextContent('Geen taken vóór blokkade')
+  })
+
+  it('does not render when open is false', () => {
+    render(<BatchEnqueueBlockerDialog {...DEFAULT_PROPS} open={false} />)
+
+    expect(screen.queryByTestId('dialog')).not.toBeInTheDocument()
+  })
+
+  it('uses singular taak when prefixCount is 1', () => {
+    render(<BatchEnqueueBlockerDialog {...DEFAULT_PROPS} prefixCount={1} />)
+
+    expect(screen.getByText(/Stuur 1 taak tot aan blokkade/)).toBeInTheDocument()
+    expect(screen.getByText(/1 taak vóór de blokkade/)).toBeInTheDocument()
+  })
+})