add sendToChat button to SourcesTab for mobile usage

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/UnifiedDataBar/SourcesTab.tsx

@@ -15,7 +15,9 @@
 import React, { useCallback, useMemo, useState } from 'react';
 import type { UdbContext } from './UnifiedDataBar';
 import { FormGeneratorTree } from '../FormGenerator/FormGeneratorTree';
+import type { TreeNode } from '../FormGenerator/FormGeneratorTree';
 import { createUdbSourcesProvider } from './UdbSourcesProvider';
+import type { UdbBackendNode } from './UdbSourcesProvider';
 import { DataSourceSettingsModal } from './DataSourceSettingsModal';
 import { useLanguage } from '../../providers/language/LanguageContext';
 
@@ -29,7 +31,11 @@ interface SourcesTabProps {
   onAttachDataSource?: (dsId: string) => void;
 }
 
-const SourcesTab: React.FC<SourcesTabProps> = ({ context }) => {
+const SourcesTab: React.FC<SourcesTabProps> = ({
+  context,
+  onSendToChat_FeatureSource,
+  onAttachDataSource,
+}) => {
   const { t } = useLanguage();
   const instanceId = context.instanceId;
 
@@ -42,6 +48,27 @@ const SourcesTab: React.FC<SourcesTabProps> = ({ context }) => {
     setSettingsModal({ dataSourceId, title: label });
   }, []);
 
+  const _handleSendToChat = useCallback((node: TreeNode<UdbBackendNode>) => {
+    const data = node.data;
+    if (!data) return;
+
+    if (data.kind === 'featureNode' || data.kind === 'fdsTable' || data.kind === 'fdsRecord') {
+      const tableName = data.tableName || (data.kind === 'featureNode' ? '*' : '');
+      const objectKey = data.objectKey
+        || (data.kind === 'featureNode' ? `data.feature.${data.featureCode}.*` : '');
+      onSendToChat_FeatureSource?.({
+        featureInstanceId: data.featureInstanceId || '',
+        featureCode: data.featureCode || '',
+        tableName,
+        objectKey,
+        label: data.label,
+      });
+    } else if (data.kind === 'connection' || data.kind === 'service'
+      || data.kind === 'folder' || data.kind === 'file') {
+      onAttachDataSource?.(data.connectionId || data.key);
+    }
+  }, [onSendToChat_FeatureSource, onAttachDataSource]);
+
   const provider = useMemo(
     () => instanceId
       ? createUdbSourcesProvider(instanceId, _handleOpenSettings)
@@ -68,6 +95,7 @@ const SourcesTab: React.FC<SourcesTabProps> = ({ context }) => {
           selectable={false}
           allowCreateFolder={false}
           emptyMessage={t('Keine Datenquellen.')}
+          onSendToChat={_handleSendToChat}
         />
       </div>
       <DataSourceSettingsModal