feat: add one-click git sync button

Combine fetch, pull with rebase, and push into one sync action
Keep remote dropdown focused on safe fetch actions
Block sync when uncommitted changes would conflict with rebase

packages/ui/src/components/views/git/GitEmptyState.tsx

@@ -1,20 +1,23 @@
 import React from 'react';
-import { RiGitCommitLine, RiArrowDownLine, RiLoader4Line } from '@remixicon/react';
+import { RiGitCommitLine, RiRefreshLine, RiLoader4Line } from '@remixicon/react';
 import { Button } from '@/components/ui/button';
 import { useI18n } from '@/lib/i18n';
 
 interface GitEmptyStateProps {
+  ahead: number;
   behind: number;
-  onPull: () => void;
-  isPulling: boolean;
+  onSync: () => void;
+  isSyncing: boolean;
 }
 
 export const GitEmptyState: React.FC<GitEmptyStateProps> = ({
+  ahead,
   behind,
-  onPull,
-  isPulling,
+  onSync,
+  isSyncing,
 }) => {
   const { t } = useI18n();
+  const hasSyncChanges = ahead > 0 || behind > 0;
   return (
     <div className="flex flex-col items-center justify-center py-10 px-4 text-center">
       <RiGitCommitLine className="size-10 text-muted-foreground/70 mb-4" />
@@ -25,20 +28,18 @@ export const GitEmptyState: React.FC<GitEmptyStateProps> = ({
         {t('gitView.empty.cleanDescription')}
       </p>
 
-      {behind > 0 && (
+      {hasSyncChanges && (
         <Button
-          variant="outline"
-          onClick={onPull}
-          disabled={isPulling}
+          variant="default"
+          onClick={onSync}
+          disabled={isSyncing}
         >
-          {isPulling ? (
+          {isSyncing ? (
             <RiLoader4Line className="size-4 animate-spin" />
           ) : (
-            <RiArrowDownLine className="size-4" />
+            <RiRefreshLine className="size-4" />
           )}
-          {behind === 1
-            ? t('gitView.empty.pullBehindSingle', { count: behind })
-            : t('gitView.empty.pullBehindPlural', { count: behind })}
+          {t('gitView.sync.syncCounts', { ahead, behind })}
         </Button>
       )}
     </div>