Fix: Abbrechen-Dialog, Overlay-Stacking, Queue-Cancel

1. Confirm-Dialog z-index ueber Progress-Popup (10000 > 9000)
2. Progress-Popup wird ausgeblendet waehrend Confirm-Dialog offen
3. Kein dunkler-werdendes Overlay bei mehrfachem Abbrechen-Klick
4. Abbrechen funktioniert jetzt auch fuer Lagen in der Warteschlange
   (werden direkt aus der Queue entfernt statt auf Start zu warten)
5. Cancel-Status wird im Popup-Titel angezeigt

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

src/agents/orchestrator.py

@@ -437,11 +437,11 @@ class AgentOrchestrator:
         return True
 
     async def cancel_refresh(self, incident_id: int) -> bool:
-        """Fordert Abbruch eines laufenden Refreshes an."""
-        if self._current_task != incident_id:
-            return False
+        """Fordert Abbruch eines laufenden oder wartenden Refreshes an."""
+        # Check if it's the currently running task
+        if self._current_task == incident_id:
             self._cancel_requested.add(incident_id)
-        logger.info(f"Cancel angefordert fuer Lage {incident_id}")
+            logger.info(f"Cancel angefordert fuer laufende Lage {incident_id}")
             if self._ws_manager:
                 try:
                     vis, cb, tid = await self._get_incident_visibility(incident_id)
@@ -454,6 +454,43 @@ class AgentOrchestrator:
                 }, vis, cb, tid)
             return True
 
+        # Check if it's in the queue (not yet started)
+        if incident_id in self._queued_ids:
+            self._queued_ids.discard(incident_id)
+            # Remove from asyncio queue (rebuild without this ID)
+            removed = False
+            new_items = []
+            while not self._queue.empty():
+                try:
+                    item = self._queue.get_nowait()
+                    iid = item[0] if isinstance(item, tuple) else item
+                    if iid == incident_id:
+                        removed = True
+                        self._queue.task_done()
+                    else:
+                        new_items.append(item)
+                except Exception:
+                    break
+            for item in new_items:
+                self._queue.put_nowait(item)
+
+            logger.info(f"Lage {incident_id} aus Warteschlange entfernt (removed={removed})")
+
+            # Send cancelled event
+            if self._ws_manager:
+                try:
+                    vis, cb, tid = await self._get_incident_visibility(incident_id)
+                except Exception:
+                    vis, cb, tid = "public", None, None
+                await self._ws_manager.broadcast_for_incident({
+                    "type": "refresh_cancelled",
+                    "incident_id": incident_id,
+                    "data": {"status": "cancelled"},
+                }, vis, cb, tid)
+            return True
+
+        return False
+
     def _check_cancelled(self, incident_id: int):
         """Prüft ob Abbruch angefordert wurde und wirft CancelledError."""
         if incident_id in self._cancel_requested:

src/static/css/style.css

@@ -1710,7 +1710,7 @@ a:hover {
     inset: 0;
     background: var(--backdrop);
     backdrop-filter: blur(4px);
-    z-index: 100;
+    z-index: 10000;
     align-items: center;
     justify-content: center;
 }

src/static/js/app.js

@@ -2224,23 +2224,41 @@ async handleRefresh() {
 
     async cancelRefresh() {
         if (!this.currentIncidentId) return;
-        const ok = await confirmDialog('Laufende Recherche abbrechen?');
-        if (!ok) return;
 
+        // Temporarily hide progress popup so confirm dialog is fully visible
+        const progressOverlay = document.getElementById('progress-overlay');
+        if (progressOverlay) progressOverlay.style.display = 'none';
+
+        const ok = await confirmDialog('Laufende Recherche abbrechen?');
+
+        // Restore progress popup if not confirmed
+        if (!ok) {
+            const state = UI._progressState[this.currentIncidentId];
+            if (state && progressOverlay) progressOverlay.style.display = 'flex';
+            return;
+        }
+
+        // Show cancelling state in popup
+        if (progressOverlay) progressOverlay.style.display = 'flex';
         const btn = document.getElementById('progress-cancel-btn');
         if (btn) {
             btn.textContent = 'Wird abgebrochen...';
             btn.disabled = true;
         }
+        const titleEl = document.getElementById('progress-popup-title');
+        if (titleEl) titleEl.textContent = 'Wird abgebrochen...';
 
         try {
-            await API.cancelRefresh(this.currentIncidentId);
+            const result = await API.cancelRefresh(this.currentIncidentId);
+            if (!result) {
+                UI.showToast('Kein aktiver Refresh zum Abbrechen gefunden.', 'info');
+                if (btn) { btn.textContent = 'Abbrechen'; btn.disabled = false; }
+                if (titleEl) titleEl.textContent = 'Aktualisierung l\u00e4uft';
+            }
         } catch (err) {
             UI.showToast('Abbrechen fehlgeschlagen: ' + err.message, 'error');
-            if (btn) {
-                btn.textContent = 'Abbrechen';
-                btn.disabled = false;
-            }
+            if (btn) { btn.textContent = 'Abbrechen'; btn.disabled = false; }
+            if (titleEl) titleEl.textContent = 'Aktualisierung l\u00e4uft';
         }
     },