fix: enforce semantic contrast across admin

src/app/admin/photos/page.tsx

@@ -69,11 +69,11 @@ export default async function AdminPhotos() {
                     }}
                   >
                     <strong>#{String(p.id)}</strong>
-                    <span className="text-sm text-gray-500 dark:text-gray-400">
+                    <span className="text-sm theme-text-muted dark:theme-text-muted">
                       {t("colRoom")} {p.roomId}
                     </span>
                   </div>
-                  <p className="text-xs text-gray-500 dark:text-gray-400" style={{ margin: "0.3rem 0 0" }}>
+                  <p className="text-xs theme-text-muted dark:theme-text-muted" style={{ margin: "0.3rem 0 0" }}>
                     {t("colUser")} {p.userId} ·{" "}
                     {new Date(p.timestamp * 1000).toISOString().slice(0, 16).replace("T", " ")}
                   </p>