feat: sexo history

frontend/src/pages/Config.tsx

@@ -547,7 +547,9 @@ function SaxoConnectionCard() {
           return (
             <span key={sym} className={clsx('badge flex items-center gap-1.5',
               check ? (check.valid ? 'badge-green' : 'badge-red') : 'badge-blue')}
-              title={check && !check.valid ? check.error ?? 'Symbole non résolu par Saxo' : undefined}
+              title={check ? (check.valid
+                ? `Résolu: ${check.matched_symbol ?? '?'} — ${check.description ?? ''} (${check.asset_type ?? '?'}, Uic ${check.uic})`
+                : check.error ?? 'Symbole non résolu par Saxo') : undefined}
             >
               {sym}
               {check && (check.valid ? <CheckCircle className="w-3 h-3" /> : <XCircle className="w-3 h-3" />)}