feat: add admin panel

src/beaver_gateway/frontends/admin/templates/audit.html

@@ -0,0 +1,37 @@
+{% extends "_layout.html" %}
+{% set active = "audit" %}
+{% block title %}beaver-gateway · audit{% endblock %}
+{% block content %}
+  <h2>Audit log</h2>
+  <div class="card">
+    {% if audit %}
+    <table>
+      <thead>
+        <tr>
+          <th>Time</th><th>Actor</th><th>Kind</th><th>Agent</th><th>Detail</th>
+        </tr>
+      </thead>
+      <tbody>
+        {% for row in audit %}
+        <tr>
+          <td><code>{{ row.ts | fmt_dt }}</code></td>
+          <td>{{ row.actor }}</td>
+          <td><span class="pill">{{ row.kind }}</span></td>
+          <td>{{ row.agent_name or "—" }}</td>
+          <td><code>{{ row.detail_json | fmt_detail }}</code></td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+    <p class="muted" style="margin-top:1rem;">
+      {% if next_before %}
+        <a href="/audit?before={{ next_before }}">Older entries →</a>
+      {% else %}
+        End of log.
+      {% endif %}
+    </p>
+    {% else %}
+      <p class="muted">Nothing logged yet.</p>
+    {% endif %}
+  </div>
+{% endblock %}