Fix ESLint errors for successful deployment

- Fixed mixed operators in contentExtractor.js with proper parentheses
- Removed unused variables and imports across all components
- Fixed useCallback dependencies in ObjectEditor.js
- Corrected == to === comparisons in TableEditor.js
- Fixed undefined variable references
- Wrapped serializeToPhp in useCallback to resolve dependency warning
- Updated table column width styling from min-w to w for consistent layout

Build now passes successfully with only non-blocking warnings remaining.

src/pages/TextLengthTool.js

@@ -1,5 +1,5 @@
 import React, { useState, useEffect } from 'react';
-import { Type, Copy, RotateCcw, Globe, Download, AlertCircle, CheckCircle, Clock, X } from 'lucide-react';
+import { Type, Copy, RotateCcw, Globe, Download, AlertCircle, Clock, X } from 'lucide-react';
 import ToolLayout from '../components/ToolLayout';
 import CopyButton from '../components/CopyButton';
 import { extractContentFromUrl, CONTENT_TYPE_INFO } from '../utils/contentExtractor';