feat(hint): targets, automatic hints and formatting

Target fields on the admin hints page. The dashboard shows the four
automatic hints after admin hints when their condition is true, using
data Core already serves. HintText renders **bold** and safe links (app
path or https) as React elements, never HTML, in hints and news.
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for good.

src/components/NewsEntry.jsx

@@ -1,6 +1,7 @@
 import {useTranslation} from 'react-i18next';
 
 import {cn} from '@/lib/utils';
+import HintText from './HintText.jsx';
 import {formatDate} from '../utils/format.js';
 import {newsText, newsTitle} from '../utils/news.js';
 
@@ -11,7 +12,7 @@ export default function NewsEntry({entry, className}) {
         <article className={cn('space-y-1', className)}>
             <p className="text-xs text-muted-foreground">{formatDate(entry.publishedAt, i18n.language, {dateStyle: 'medium'})}</p>
             <h3 className="font-semibold">{newsTitle(entry, i18n.language)}</h3>
-            <p className="whitespace-pre-line break-words text-sm">{newsText(entry, i18n.language)}</p>
+            <p className="whitespace-pre-line break-words text-sm"><HintText text={newsText(entry, i18n.language)}/></p>
         </article>
     );
 }