Remove merge error returning code

frontend/src/pages/HomePage.tsx

@@ -42,100 +42,9 @@ export default function HomePage() {
   const [pageEditorFunctions, setPageEditorFunctions] = useState<any>(null);
   const [previewFile, setPreviewFile] = useState<File | null>(null);
 
-  // Tool registry
-  const toolRegistry: ToolRegistry = {
-    split: { ...baseToolRegistry.split, name: t("home.split.title", "Split PDF") },
-    compress: { ...baseToolRegistry.compress, name: t("home.compressPdfs.title", "Compress PDF") },
-    merge: { ...baseToolRegistry.merge, name: t("home.merge.title", "Merge PDFs") },
-  };
-
-  // Tool parameters with state management
-  const getToolParams = (toolKey: string | null) => {
-    if (!toolKey) return {};
-
-    // Get stored params for this tool, or use defaults
-    const storedParams = toolParams[toolKey] || {};
-
-    const defaultParams = (() => {
-      switch (toolKey) {
-        case 'split':
-          return {
-            mode: '',
-            pages: '',
-            hDiv: '2',
-            vDiv: '2',
-            merge: false,
-            splitType: 'size',
-            splitValue: '',
-            bookmarkLevel: '1',
-            includeMetadata: false,
-            allowDuplicates: false,
-          };
-        case 'compress':
-          return {
-            quality: 80,
-            imageCompression: true,
-            removeMetadata: false
-          };
-        case 'merge':
-          return {
-            sortOrder: 'name',
-            includeMetadata: true
-          };
-        default:
-          return {};
-      }
-    })();
-
-    return { ...defaultParams, ...storedParams };
-  };
-
-  const updateToolParams = useCallback((toolKey: string, newParams: any) => {
-    setToolParams(prev => ({
-      ...prev,
-      [toolKey]: {
-        ...prev[toolKey],
-        ...newParams
-      }
-    }));
-  }, []);
 
 
-  useEffect(() => {
-    const activeFileData = activeFiles.map(file => ({
-      name: file.name,
-      size: file.size,
-      type: file.type,
-      lastModified: file.lastModified
-    }));
-    localStorage.setItem('activeFiles', JSON.stringify(activeFileData));
-  }, [activeFiles]);
 
-  useEffect(() => {
-    const loadStoredFiles = async () => {
-      try {
-        const files = await fileStorage.getAllFiles();
-        setStoredFiles(files);
-      } catch (error) {
-        console.warn('Failed to load stored files:', error);
-      }
-    };
-    loadStoredFiles();
-  }, []);
-
-  useEffect(() => {
-    const restoreActiveFiles = async () => {
-      try {
-        const savedFileData = JSON.parse(localStorage.getItem('activeFiles') || '[]');
-        if (savedFileData.length > 0) {
-          // File restoration handled by FileContext
-        }
-      } catch (error) {
-        console.warn('Failed to restore active files:', error);
-      }
-    };
-    restoreActiveFiles();
-  }, []);
 
   const handleToolSelect = useCallback(
     (id: string) => {