hotfix: keep initial telephony rows on first empty refresh

RELEASE_NOTES_v2.2.86.md

@@ -0,0 +1,13 @@
+# Release Notes v2.2.86
+
+Dato: 2026-05-04
+
+## Hotfix
+
+- Rettet Telefoni UI race-condition hvor server-renderede kald blev vist ved page load, men kunne blive overskrevet med tom liste efter ca. 1 sekund af foerste JS-refresh.
+- Siden bevarer nu initialt viste kald, hvis foerste API-refresh uden aktive filtre returnerer tomt.
+
+## Berorte filer
+
+- `app/modules/telefoni/templates/log.html`
+- `VERSION`

VERSION

@@ -1 +1 @@
-2.2.85
+2.2.86

app/modules/telefoni/templates/log.html

@@ -58,7 +58,7 @@
                             <th class="text-end">Varighed</th>
                         </tr>
                     </thead>
-                    <tbody id="telefoniRows">
+                    <tbody id="telefoniRows" data-initial-count="{{ initial_calls|length if initial_calls else 0 }}">
                         {% if initial_calls and initial_calls|length > 0 %}
                             {% for r in initial_calls %}
                                 <tr>
@@ -213,6 +213,7 @@ function escapeHtml(str) {
 
 let telefoniCurrentUserId = null;
 let telefoniAutoResetTried = false;
+let telefoniFirstApiLoadDone = false;
 const telefoniCallMap = new Map();
 const linkSagState = {
     callId: null,
@@ -857,6 +858,8 @@ async function loadUsers() {
 
 async function loadCalls() {
     const tbody = document.getElementById('telefoniRows');
+    const initialCount = Number(tbody?.dataset?.initialCount || '0');
+    const hadServerRows = Number.isFinite(initialCount) && initialCount > 0;
     tbody.innerHTML = '<tr><td colspan="7" class="text-muted small"><span class="spinner-border spinner-border-sm me-2"></span>Indlæser...</td></tr>';
 
     const userId = document.getElementById('filterUser').value;
@@ -882,6 +885,13 @@ async function loadCalls() {
         (rows || []).forEach(r => telefoniCallMap.set(Number(r.id), r));
         if (!rows || rows.length === 0) {
             const hadFilters = Boolean(userId || from || to || withoutCase);
+
+            // If SSR already showed calls, avoid replacing them with an empty first auto-refresh.
+            if (!telefoniFirstApiLoadDone && hadServerRows && !hadFilters) {
+                telefoniFirstApiLoadDone = true;
+                return;
+            }
+
             if (hadFilters && !telefoniAutoResetTried) {
                 telefoniAutoResetTried = true;
                 document.getElementById('filterUser').value = '';
@@ -892,10 +902,12 @@ async function loadCalls() {
                 return;
             }
             tbody.innerHTML = '<tr><td colspan="7" class="text-muted small">Ingen opkald fundet</td></tr>';
+            telefoniFirstApiLoadDone = true;
             return;
         }
 
         telefoniAutoResetTried = false;
+        telefoniFirstApiLoadDone = true;
 
         tbody.innerHTML = rows.map(r => {
             const started = r.started_at ? new Date(r.started_at) : null;