add ARIA labels and pressed states to board list and remaining components

src/components/board/AddCardInput.tsx

@@ -44,6 +44,7 @@ export function AddCardInput({ columnId, onClose }: AddCardInputProps) {
         onBlur={() => {
           if (!value.trim()) onClose();
         }}
+        aria-label="Card title"
         placeholder="Card title..."
         rows={2}
         className="w-full resize-none rounded-lg bg-pylon-surface p-3 text-sm text-pylon-text shadow-sm outline-none placeholder:text-pylon-text-secondary focus:ring-1 focus:ring-pylon-accent"