Jun 28 - Update tenant self-service signup, trial period enforcement

app/templates/billing/_billing_banner.html

@@ -9,4 +9,19 @@
   </div>
   <button type="button" class="btn-close ms-auto" data-bs-dismiss="alert" aria-label="Close"></button>
 </div>
+{% elif billing_warning == 'trial_ending' %}
+<div class="alert alert-info alert-dismissible fade show d-flex align-items-center gap-2 mb-3" role="alert">
+  <i class="bi bi-hourglass-split flex-shrink-0 fs-5"></i>
+  <div>
+    <strong>Trial ending soon.</strong>
+    {% if trial_days_remaining is not none and trial_days_remaining <= 1 %}
+      Your free trial expires <strong>today</strong>.
+    {% else %}
+      Your free trial expires in <strong>{{ trial_days_remaining }} day{{ 's' if trial_days_remaining != 1 }}</strong>.
+    {% endif %}
+    Subscribe now to keep your workspace active.
+    <a href="{{ url_for('billing.subscribe') }}" class="alert-link ms-1">Subscribe &rsaquo;</a>
+  </div>
+  <button type="button" class="btn-close ms-auto" data-bs-dismiss="alert" aria-label="Close"></button>
+</div>
 {% endif %}