fix(web): repair invalid ARIA and make search/tag pickers real comboboxes

apps/web/src/components/AppShell.tsx

@@ -11,7 +11,7 @@ export function AppShell() {
       {/* Skip to main content — must be the first focusable element */}
       <a
         href="#main-content"
-        className="sr-only focus:not-sr-only focus:fixed focus:top-2 focus:left-2 focus:z-[100] focus:px-4 focus:py-2 focus:bg-primary focus:text-primary-foreground focus:rounded focus:shadow-lg focus:outline-none"
+        className="sr-only focus:not-sr-only focus:fixed focus:top-2 focus:left-2 focus:z-[100] focus:px-4 focus:py-2 focus:bg-primary focus:text-primary-foreground focus:rounded focus:shadow-lg"
       >
         Skip to main content
       </a>

apps/web/src/components/ConnectGitHubBanner.tsx

@@ -53,7 +53,6 @@ export function ConnectGitHubBanner() {
           variant="ghost"
           size="sm"
           onClick={() => setDismissed(true)}
-          aria-label="Dismiss"
         >
           Dismiss
         </Button>

apps/web/src/components/MarkdownEditor.tsx

@@ -53,6 +53,7 @@ export function MarkdownEditor({
   required,
 }: MarkdownEditorProps) {
   const id = useId();
+  const errorId = `${id}-error`;
   const textareaRef = useRef<HTMLTextAreaElement>(null);
   const [previewHtml, setPreviewHtml] = useState<string>('');
   const [previewLoading, setPreviewLoading] = useState(false);
@@ -170,11 +171,14 @@ export function MarkdownEditor({
             className="rounded-none border-0 focus-visible:ring-0 font-mono text-sm resize-y"
             style={{ minHeight }}
             aria-invalid={error ? 'true' : 'false'}
+            aria-describedby={error ? errorId : undefined}
           />
+          {/* Deliberately not a live region: the preview is the whole document
+              re-rendered on every debounce, so announcing it would read the
+              entire text back on each pause in typing. */}
           <div
             className="p-3 bg-background text-sm overflow-auto"
             style={{ minHeight }}
-            aria-live="polite"
           >
             {previewError ? (
               <p className="text-xs text-destructive">{previewError}</p>
@@ -192,7 +196,9 @@ export function MarkdownEditor({
       </div>
       <div className="flex items-center justify-between text-xs">
         {error ? (
-          <span className="text-destructive">{error}</span>
+          <span id={errorId} className="text-destructive">
+            {error}
+          </span>
         ) : (
           <span className="text-muted-foreground">Markdown · supports GFM</span>
         )}

apps/web/src/components/NetworkErrorBanner.tsx

@@ -7,17 +7,26 @@ import {
 } from 'react';
 
 interface NetworkErrorContextValue {
-  showError: (message?: string) => void;
+  /**
+   * Show the banner. Pass `retry` when the failed work can be re-issued; the
+   * button then reads "Retry" and runs it. Without one it reads "Dismiss".
+   */
+  showError: (message?: string, retry?: () => void) => void;
   clearError: () => void;
 }
 
+interface NetworkErrorState {
+  message: string;
+  retry?: () => void;
+}
+
 const NetworkErrorContext = createContext<NetworkErrorContextValue | null>(null);
 
 export function NetworkErrorProvider({ children }: { children: ReactNode }) {
-  const [error, setError] = useState<string | null>(null);
+  const [error, setError] = useState<NetworkErrorState | null>(null);
 
-  const showError = useCallback((message?: string) => {
-    setError(message ?? 'Something went wrong. We are looking at it.');
+  const showError = useCallback((message?: string, retry?: () => void) => {
+    setError({ message: message ?? 'Something went wrong. We are looking at it.', retry });
   }, []);
 
   const clearError = useCallback(() => {
@@ -32,13 +41,15 @@ export function NetworkErrorProvider({ children }: { children: ReactNode }) {
           className="bg-destructive text-destructive-foreground px-4 py-2 text-sm flex items-center justify-between"
           data-testid="network-error-banner"
         >
-          <span>{error}</span>
+          <span>{error.message}</span>
           <button
-            onClick={clearError}
+            onClick={() => {
+              error.retry?.();
+              clearError();
+            }}
             className="ml-4 underline hover:no-underline"
-            aria-label="Dismiss error"
           >
-            Retry
+            {error.retry ? 'Retry' : 'Dismiss'}
           </button>
         </div>
       )}

apps/web/src/components/Pagination.tsx

@@ -62,6 +62,7 @@ export function Pagination({ page, totalPages, onPageChange, siblingCount = 1, c
             variant={p === page ? 'default' : 'outline'}
             size="sm"
             onClick={() => onPageChange(p)}
+            aria-label={`Page ${p}`}
             aria-current={p === page ? 'page' : undefined}
           >
             {p}

apps/web/src/components/PersonAvatar.tsx

@@ -24,6 +24,7 @@ export function PersonAvatar({ person, size = 32, asLink = true, className, titl
     />
   ) : (
     <span
+      role="img"
       title={title ?? person.fullName}
       className={cn(
         'inline-flex items-center justify-center rounded-full font-medium',
@@ -43,7 +44,7 @@ export function PersonAvatar({ person, size = 32, asLink = true, className, titl
   if (!asLink || !person.slug || person.deactivated) return inner;
 
   return (
-    <Link to={`/members/${person.slug}`} aria-label={person.fullName}>
+    <Link to={`/members/${person.slug}`}>
       {inner}
     </Link>
   );