feat(frontend): integrate tailwind pipeline and update templates

templates/scouting/partials/save_search_feedback.html

@@ -1,3 +1,5 @@
-<div class="message {% if ok %}success{% else %}error{% endif %}">
-  {{ message }}
-</div>
+{% if ok %}
+  <div class="rounded-md border border-emerald-200 bg-emerald-50 px-3 py-2 text-sm text-emerald-800" role="status">{{ message }}</div>
+{% else %}
+  <div class="rounded-md border border-rose-200 bg-rose-50 px-3 py-2 text-sm text-rose-800" role="alert">{{ message }}</div>
+{% endif %}