fix: 查询结果单元格不再截断,完整显示内容

去掉 max-w-[200px] truncate 限制，改为 whitespace-pre-wrap break-words
自然换行，LRANGE 等长文本完整展示

frontend/src/pages/QueriesPage.tsx

@@ -552,7 +552,7 @@ export default function QueriesPage() {
                               const cellValue = row[col] ?? '';
                               const { text: displayText, isJson } = formatCellValue(cellValue);
                               return (
-                                <td key={col} className={`px-3 py-2 text-xs ${isJson ? 'max-w-[400px] whitespace-pre-wrap break-all font-mono text-[11px] leading-relaxed' : 'max-w-[200px] truncate'}`} title={String(cellValue)}>
+                                <td key={col} className={`px-3 py-2 text-xs ${isJson ? 'max-w-[500px] whitespace-pre-wrap break-all font-mono text-[11px] leading-relaxed' : 'whitespace-pre-wrap break-words'}`} title={String(cellValue)}>
                                   {isSensitive ? <span className="text-yellow-400 italic">{maskData(String(cellValue))}</span> :
                                    isJson ? <span className="text-blue-300">{displayText}</span> :
                                    String(cellValue)}