diff --git a/preload.js b/preload.js
index a2aa0ae..6a05fc1 100644
--- a/preload.js
+++ b/preload.js
@@ -20,6 +20,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
 
   // Gitea Datei-Operationen
   listGiteaRepos: (data) => ipcRenderer.invoke('list-gitea-repos', data),
+  getGiteaUserHeatmap: (data) => ipcRenderer.invoke('get-gitea-user-heatmap', data),
   getGiteaRepoContents: (data) => ipcRenderer.invoke('get-gitea-repo-contents', data),
   getGiteaFileContent: (data) => ipcRenderer.invoke('get-gitea-file-content', data),
   readGiteaFile: (data) => ipcRenderer.invoke('read-gitea-file', data),
@@ -40,6 +41,8 @@ contextBridge.exposeInMainWorld('electronAPI', {
   uploadAndPush: (data) => ipcRenderer.invoke('upload-and-push', data),
   deleteGiteaRepo: (data) => ipcRenderer.invoke('delete-gitea-repo', data),
   runBatchRepoAction: (data) => ipcRenderer.invoke('run-batch-repo-action', data),
+  validateRepoName: (data) => ipcRenderer.invoke('validate-repo-name', data),
+  checkCloneTargetCollisions: (data) => ipcRenderer.invoke('check-clone-target-collisions', data),
 
   // Offline/Retry Queue
   getRetryQueue: () => ipcRenderer.invoke('get-retry-queue'),
@@ -129,5 +132,18 @@ contextBridge.exposeInMainWorld('electronAPI', {
     const listener = (event, payload) => { try { cb(payload); } catch (_) {} };
     ipcRenderer.on('batch-action-progress', listener);
     return () => ipcRenderer.removeListener('batch-action-progress', listener);
-  }
+  },
+
+  // Window Controls
+  windowMinimize: () => ipcRenderer.send('window-minimize'),
+  windowMaximize: () => ipcRenderer.send('window-maximize'),
+  windowClose: () => ipcRenderer.send('window-close'),
+
+  // Autostart
+  setAutostart: (enable) => ipcRenderer.invoke('set-autostart', enable),
+  getAutostart: () => ipcRenderer.invoke('get-autostart'),
+
+  // Utility
+  copyToClipboard: (text) => ipcRenderer.invoke('copy-to-clipboard', text),
+  openExternalUrl: (url) => ipcRenderer.invoke('open-external-url', url)
 });
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