diff --git a/preload.js b/preload.js
index 098f8eb..9651da7 100644
--- a/preload.js
+++ b/preload.js
@@ -28,9 +28,9 @@ contextBridge.exposeInMainWorld('electronAPI', {
   getGithubCurrentUser: () => ipcRenderer.invoke('get-github-current-user'),
   getGithubUserHeatmap: (data) => ipcRenderer.invoke('get-github-user-heatmap', data),
   getGiteaRepoContents: (data) => ipcRenderer.invoke('get-gitea-repo-contents', data),
-  listGiteaTrash: (data) => ipcRenderer.invoke('list-gitea-trash', data),
-  purgeGiteaTrash: (data) => ipcRenderer.invoke('purge-gitea-trash', data),
-  restoreGiteaTrashItem: (data) => ipcRenderer.invoke('restore-gitea-trash-item', data),
+  listGiteaTrash: () => ({ ok: true, items: [] }),
+  purgeGiteaTrash: () => ({ ok: true }),
+  restoreGiteaTrashItem: () => ({ ok: false, error: 'Papierkorb deaktiviert' }),
   getGiteaFileContent: (data) => ipcRenderer.invoke('get-gitea-file-content', data),
   readGiteaFile: (data) => ipcRenderer.invoke('read-gitea-file', data),
   writeGiteaFile: (data) => ipcRenderer.invoke('write-gitea-file', data),
@@ -43,11 +43,15 @@ contextBridge.exposeInMainWorld('electronAPI', {
   saveCredentials: (data) => ipcRenderer.invoke('save-credentials', data),
   loadCredentials: () => ipcRenderer.invoke('load-credentials'),
   getCredentialsStatus: () => ipcRenderer.invoke('get-credentials-status'),
+  exportSettingsBundle: () => ipcRenderer.invoke('export-settings-bundle'),
+  importSettingsBundle: () => ipcRenderer.invoke('import-settings-bundle'),
+  createDiagnosticsPackage: () => ipcRenderer.invoke('create-diagnostics-package'),
   testGiteaConnection: (data) => ipcRenderer.invoke('test-gitea-connection', data),
   testGithubConnection: (data) => ipcRenderer.invoke('test-github-connection', data),
   updateGiteaAvatar: (data) => ipcRenderer.invoke('update-gitea-avatar', data),
   updateGiteaRepoAvatar: (data) => ipcRenderer.invoke('update-gitea-repo-avatar', data),
   updateGiteaRepoVisibility: (data) => ipcRenderer.invoke('update-gitea-repo-visibility', data),
+  updateRepoArchived: (data) => ipcRenderer.invoke('update-repo-archived', data),
   updateGiteaRepoTopics: (data) => ipcRenderer.invoke('update-gitea-repo-topics', data),
   getGiteaTopicsCatalog: () => ipcRenderer.invoke('get-gitea-topics-catalog'),
   migrateRepoToGitea: (data) => ipcRenderer.invoke('migrate-repo-to-gitea', data),
@@ -136,6 +140,12 @@ contextBridge.exposeInMainWorld('electronAPI', {
     return () => ipcRenderer.removeListener('update-progress', listener);
   },
 
+  onUpdateError: (cb) => {
+    const listener = (event, payload) => cb(payload);
+    ipcRenderer.on('update-error', listener);
+    return () => ipcRenderer.removeListener('update-error', listener);
+  },
+
   onPushProgress: (cb) => {
     const listener = (event, percent) => { try { cb(percent); } catch (_) {} };
     ipcRenderer.on('push-progress', listener);