docs: rewrite README with Azure setup guide and troubleshooting

Also improve dashboard to show 'Warte auf Status...' instead of
gray bars when user is assigned but no polling result exists yet.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

templates/dashboard.html

@@ -38,11 +38,19 @@
                 <div class="mb-2">
                     <small class="text-muted d-block mb-1">Segment {{ seg.index }}</small>
                     {% if seg.user %}
+                    {% if seg.aida == '-' %}
+                    <div class="segment-bar" style="background: #f0f0f0; border-color: #ccc;">
+                        <span class="status-dot me-2" style="background: #ccc;"></span>
+                        {{ seg.user }}
+                    </div>
+                    <small class="text-muted"><i class="bi bi-hourglass-split"></i> Warte auf Status...</small>
+                    {% else %}
                     <div class="segment-bar" style="background: rgba({{ seg.r }}, {{ seg.g }}, {{ seg.b }}, 0.3); border-color: rgb({{ seg.r }}, {{ seg.g }}, {{ seg.b }});">
                         <span class="status-dot me-2" style="background: rgb({{ seg.r }}, {{ seg.g }}, {{ seg.b }});"></span>
                         {{ seg.user }}
                     </div>
                     <small class="text-muted">{{ seg.aida }} / {{ seg.teams }}</small>
+                    {% endif %}
                     {% else %}
                     <div class="segment-bar empty">
                         <i class="bi bi-dash-circle me-2"></i> Nicht zugeordnet