adding static connection

app/templates/admin/static_connections.html

@@ -0,0 +1,19 @@
+{% extends "base.html" %}
+{% block title %}Static Connections · {{ app_name }}{% endblock %}
+{% block body %}
+{% include "_nav.html" %}
+<main class="container">
+  <h1>Static Connections</h1>
+
+  <div class="card">
+    <h2>Add connection</h2>
+    <form hx-post="/admin/static-connections" hx-target="#static-connection-list" hx-swap="outerHTML" class="form-grid">
+      <label>OD (mm) <input type="number" name="od_mm" step="0.001" min="0" placeholder="e.g. 30.0" required></label>
+      <label>OD (in) <input type="number" name="od_in" step="0.0001" min="0" placeholder="e.g. 1.1811" required></label>
+      <button type="submit" class="btn btn-primary">Add</button>
+    </form>
+  </div>
+
+  {% include "admin/_static_connections_table.html" %}
+</main>
+{% endblock %}