fix: move templates to root directory for Flask discovery

app/templates/dashboard.html

@@ -1,34 +0,0 @@
-{% extends "base.html" %}
-{% block content %}
-<h2>Dashboard</h2>
-<a href="{{ url_for('company_create') }}" class="btn btn-primary">Neue Firma</a>
-{% if companies %}
-<table>
-    <thead>
-        <tr>
-            <th>Name</th>
-            <th>Telefon</th>
-            <th>Email</th>
-            <th>Aktionen</th>
-        </tr>
-    </thead>
-    <tbody>
-    {% for c in companies %}
-        <tr>
-            <td><a href="{{ url_for('contact_list', company_id=c.id) }}">{{ c.name }}</a></td>
-            <td>{{ c.phone or '-' }}</td>
-            <td>{{ c.email or '-' }}</td>
-            <td>
-                <a href="{{ url_for('company_edit', id=c.id) }}" class="btn btn-sm btn-secondary">Edit</a>
-                <form method="post" action="{{ url_for('company_delete', id=c.id) }}" style="display:inline;">
-                    <button type="submit" class="btn btn-sm btn-danger" onclick="return confirm('Wirklich löschen?')">Del</button>
-                </form>
-            </td>
-        </tr>
-    {% endfor %}
-    </tbody>
-</table>
-{% else %}
-<p>Noch keine Firmen erfasst.</p>
-{% endif %}
-{% endblock %}