LiveAnnouncerProvider (shared/LiveAnnouncer.tsx)

React context provider for announcing screen reader updates via aria-live regions

// Source: https://github.com/BradGroux/veritas-kanban | License: MIT | Copyright 2026 Digital Meld
// Provided via justclaw.it.com; keep this notice with the code.
import { createContext, useContext, useState, useCallback, type ReactNode } from 'react';

/**
 * LiveAnnouncer — Provides an aria-live region for announcing dynamic changes
 * to screen reader users (e.g., task moved to a new column, filters applied).
 *
 * WCAG 2.1 Success Criterion 4.1.3 — Status Messages
 */

interface LiveAnnouncerContextValue {
  announce: (message: string, priority?: 'polite' | 'assertive') => void;
}

const LiveAnnouncerContext = createContext<LiveAnnouncerContextValue | null>(null);

export function LiveAnnouncerProvider({ children }: { children: ReactNode }) {
  const [politeMessage, setPoliteMessage]

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