feat: unify sync functionality with event-driven UI updates

- Refactored navbar sync button to dispatch 'sync-completed' event
- Configs page: removed duplicate 'Импорт с сервера' button, added auto-refresh on sync
- Projects page: wrapped initialization in DOMContentLoaded, added auto-refresh on sync
- Pricelists page: added auto-refresh on sync completion
- Consistent UX: all lists update automatically after 'Синхронизация' button click
- Removed code duplication: importConfigsFromServer() function no longer needed
- Event-driven architecture enables easy extension to other pages

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

web/templates/projects.html

@@ -385,40 +385,48 @@ async function copyProject(projectUUID, projectName) {
     loadProjects();
 }
 
-loadProjects();
-
-document.getElementById('projects-search').addEventListener('input', function(e) {
-    projectsSearch = (e.target.value || '').trim();
-    currentPage = 1;
+document.addEventListener('DOMContentLoaded', function() {
     loadProjects();
-});
 
-document.getElementById('create-project-code').addEventListener('input', function() {
-    updateCreateProjectTrackerURL();
-});
+    document.getElementById('projects-search').addEventListener('input', function(e) {
+        projectsSearch = (e.target.value || '').trim();
+        currentPage = 1;
+        loadProjects();
+    });
 
-document.getElementById('create-project-tracker-url').addEventListener('input', function(e) {
-    createProjectTrackerManuallyEdited = (e.target.value || '').trim() !== createProjectLastAutoTrackerURL;
-});
+    document.getElementById('create-project-code').addEventListener('input', function() {
+        updateCreateProjectTrackerURL();
+    });
 
-document.getElementById('create-project-code').addEventListener('keydown', function(e) {
-    if (e.key === 'Enter') {
-        e.preventDefault();
-        createProject();
-    }
-});
+    document.getElementById('create-project-tracker-url').addEventListener('input', function(e) {
+        createProjectTrackerManuallyEdited = (e.target.value || '').trim() !== createProjectLastAutoTrackerURL;
+    });
 
-document.getElementById('create-project-tracker-url').addEventListener('keydown', function(e) {
-    if (e.key === 'Enter') {
-        e.preventDefault();
-        createProject();
-    }
-});
+    document.getElementById('create-project-code').addEventListener('keydown', function(e) {
+        if (e.key === 'Enter') {
+            e.preventDefault();
+            createProject();
+        }
+    });
 
-document.getElementById('create-project-modal').addEventListener('click', function(e) {
-    if (e.target === this) {
-        closeCreateProjectModal();
-    }
+    document.getElementById('create-project-tracker-url').addEventListener('keydown', function(e) {
+        if (e.key === 'Enter') {
+            e.preventDefault();
+            createProject();
+        }
+    });
+
+    document.getElementById('create-project-modal').addEventListener('click', function(e) {
+        if (e.target === this) {
+            closeCreateProjectModal();
+        }
+    });
+
+    // Listen for sync completion events from navbar
+    window.addEventListener('sync-completed', function(e) {
+        // Reset pagination and reload projects list
+        loadProjects();
+    });
 });
 </script>
 {{end}}