Fix bugs from BUGHUNT.md: restore race conditions, infra backup, DR wiring, docker-setup.sh, restore.html

controller/internal/web/templates/restore.html

@@ -255,10 +255,15 @@
         pollStatus();
     }
 
+    var pollErrors = 0;
     function pollStatus() {
         fetch('/api/restore/status')
-            .then(function(resp) { return resp.json(); })
+            .then(function(resp) {
+                if (!resp.ok) throw new Error('HTTP ' + resp.status);
+                return resp.json();
+            })
             .then(function(data) {
+                pollErrors = 0;
                 if (!data.ok) return;
                 updateTable(data.apps || []);
                 updateProgress(data.apps || []);
@@ -270,23 +275,41 @@
                     updateActions();
                 }
             })
-            .catch(function() {});
+            .catch(function(err) {
+                pollErrors++;
+                console.error('Poll error:', err);
+                if (pollErrors >= 10) {
+                    clearInterval(polling);
+                    polling = null;
+                    var actions = document.getElementById('dr-actions');
+                    if (actions) {
+                        actions.innerHTML = '<p style="color:var(--danger)">Kapcsolat megszakadt. <a href="/restore">Oldal frissítése</a></p>';
+                    }
+                }
+            });
     }
 
     function updateTable(apps) {
         apps.forEach(function(app) {
             var cells = document.querySelectorAll('.app-status[data-app="' + app.name + '"]');
             cells.forEach(function(cell) {
-                var html = '<span class="status-' + app.status + '">';
+                var span = document.createElement('span');
+                span.className = 'status-' + app.status;
                 if (app.status === 'restoring') {
-                    html += '<span class="spinner"></span> ';
+                    var spinner = document.createElement('span');
+                    spinner.className = 'spinner';
+                    span.appendChild(spinner);
+                    span.appendChild(document.createTextNode(' '));
                 }
-                html += statusText(app.status);
+                span.appendChild(document.createTextNode(statusText(app.status)));
                 if (app.error) {
-                    html += ' <span style="font-size:.8rem;color:var(--danger)">(' + app.error.substring(0, 60) + ')</span>';
+                    var errSpan = document.createElement('span');
+                    errSpan.style.cssText = 'font-size:.8rem;color:var(--danger)';
+                    errSpan.textContent = ' (' + app.error.substring(0, 60) + ')';
+                    span.appendChild(errSpan);
                 }
-                html += '</span>';
-                cell.innerHTML = html;
+                cell.innerHTML = '';
+                cell.appendChild(span);
             });
         });
     }