feat: add ReconConfig API and UI for managing configurations

- Added a new API endpoint for managing ReconConfigs at /api/configs, including GET, POST, PUT, and a test URL feature.
- Implemented a new configuration editor UI at /configs for creating and editing ReconConfigs.
- Introduced a new configs list page at /configs to display existing configurations with options to edit.
- Updated base HTML template to include a link to the new configs page.
- Created stub configuration and authentication models for workspace development.
- Added a stub configuration module to handle database configuration without a real database.

data/templates/configs_list.html

@@ -0,0 +1,54 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="dashboard-container dashboard-stack">
+
+  <div class="detail-header">
+    <div class="detail-crumbs">
+      <a href="/">Dashboard</a> › Configs
+    </div>
+    <h1 style="display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px;">
+      Recon Configs
+      <a href="/configs/new" class="btn btn-primary">+ New Config</a>
+    </h1>
+  </div>
+
+  <div class="table-scroll" style="flex:1">
+    <table class="data-table">
+      <thead>
+        <tr>
+          <th>Reference</th>
+          <th>Name</th>
+          <th>Business Process</th>
+          <th>Frequency</th>
+          <th>Status</th>
+          <th></th>
+        </tr>
+      </thead>
+      <tbody>
+        {% for c in configs %}
+        <tr>
+          <td><code>{{ c.reference }}</code></td>
+          <td>{{ c.name }}</td>
+          <td>{{ c.business_process }}</td>
+          <td>{{ c.frequency }}</td>
+          <td>
+            <span class="badge badge-config-{{ c.status }}">{{ c.status }}</span>
+          </td>
+          <td style="text-align:right">
+            <a href="/configs/{{ c.reference }}/edit" class="btn btn-secondary btn-sm">Edit</a>
+          </td>
+        </tr>
+        {% else %}
+        <tr>
+          <td colspan="6" style="text-align:center; padding:40px; color:#64748b">
+            No configs yet. <a href="/configs/new" style="color:var(--asb-yellow)">Create one.</a>
+          </td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+  </div>
+
+</div>
+{% endblock %}