web routing is POG now

web/templates/pages/admin/table_definition/feedback.html

@@ -0,0 +1,24 @@
+{#
+  The outcome of the last write, reported the way every page here reports it:
+  inline as an alert, as a modal that has to be dismissed, and — on success —
+  as a toast that outlives the swap.
+
+  Included at the top of each page's panel fragment, because the fragment is
+  what a write swaps, so this is the markup that has to carry the reason.
+#}
+{% import "ui/alert.html" as feedback_alert %}
+{% import "ui/dialog.html" as feedback_dialog %}
+{% import "ui/toast.html" as feedback_toast %}
+
+{%- if let Some(message) = page.error %}{% call feedback_alert::error("Could not continue", message) %}{% endcall %}{% endif -%}
+{%- if let Some(message) = page.status %}{% call feedback_toast::success("Done", message) %}{% endcall %}{% endif -%}
+{%- if let Some(message) = page.error %}{% call feedback_dialog::error("Could not continue", message) %}{% endcall %}{% endif -%}
+
+{% if let Some(sql) = page.sql %}
+  {% if !sql.is_empty() %}
+    <section class="panel">
+      <h2>SQL the backend ran</h2>
+      <pre class="sql-preview">{{ sql }}</pre>
+    </section>
+  {% endif %}
+{% endif %}