refactor: 全面代码重构与项目结构整理

安全性:
- 所有SQL查询改用参数化查询(db_query)，防止SQL注入
- TUSHARE_API_TOKEN集中到config.php常量，移除硬编码和多份拷贝
- getBasic.inc.php中$_REQUEST输出到JS时添加htmlspecialchars转义

代码组织:
- 21个页面文件移至charts/子目录，根目录仅保留入口文件
- ajax.inc.php拆分：esfTradeDaily/esfListDaily迁至getEstate.inc.php
- getBasic.inc.php拆分：HTML组件函数迁至新建的widgets.inc.php
- 前端依赖去重：移除lib/echarts.min.js、libai/3.4.16.js、research/js/3.4.16.js

规范化:
- AJAX响应格式统一为jsonResponse()标准封装
- 前端全局变量统一为window.chartConfig对象模式
- 修复PHP 8.4 Deprecated警告(getEstateData、getStockHistoryDataByTS参数顺序)
- html/head.php中jQuery/CSS路径改为绝对路径，修复charts/子目录加载问题

Co-Authored-By: Claude Code <noreply@anthropic.com>

charts/chartThree.php

@@ -0,0 +1,119 @@
+<?php
+include_once "../inc/getData.inc.php";
+include_once "../html/headChart.php"; //required after $ts_code and $ts_name,maybe doesn't matter
+$day_st=$_REQUEST['s']?$_REQUEST['s']:'2006-01-01';
+$day_end=$_REQUEST['e']?$_REQUEST['e']:date('Y-m-d');
+#$day_st_='2006-01-01';
+#$day_end_=date('Y-m-d');
+$lx=isset($lx)?$lx:$_REQUEST['lx'];
+$share =$_REQUEST['share'];
+$share = ($share)?$share:'ShareHDNum';
+if($share=='ShareHDNum') $unit = '(亿股)';
+elseif($share=='vPosition') $unit = '(亿元)';
+elseif($share=='VSRatio') $unit = '(元)';
+#var_dump($lx);
+$data=getIndexData('000001.SH',$day_st,$day_end);
+#$data1=getIndexData('399001.SZ',$day_st,$day_end);
+$data2=getIhData($lx,$share,$day_st,$day_end);
+$legend=array('上证综指','深证成指',lxDefine($lx));
+#$value=json_encode($data['data']);
+?>
+       <script type="text/javascript">
+var dom = document.getElementById("container");
+var myChart = echarts.init(dom,'dark');
+var app = {};
+option = null;
+window.chartConfig = {
+    legend: <?php echo json_encode($legend); ?>,
+    unit: '<?php echo $unit; ?>'
+};
+var cfg = window.chartConfig;
+
+option = {
+    title: {
+        text: cfg.legend[0]+" V.S "+cfg.legend[2],
+        //subtext:"双轴显示",
+        textAlign:'center',
+        left:'50%'
+    },
+    tooltip: {
+        trigger: 'axis'
+    },
+    legend: {
+        data: cfg.legend,
+        right:'20'
+    },
+    grid: {
+        left: '3%',
+        right: '4%',
+        bottom: '3%',
+        containLabel: true
+    },
+    toolbox: {
+        feature: {
+            saveAsImage: {}
+        }
+    },
+    xAxis: {
+        //type: 'category',
+        type: 'time',
+        boundaryGap: false
+    },
+    yAxis: [{
+        type: 'value',
+        name:legend[0], //图列
+        show:true
+    },
+    {
+        type:'value',
+        name: cfg.legend[2]+cfg.unit,  //图例
+        //scale:true,
+        boundaryGap:false,
+        show:true,
+        splitLine:{
+            show:false, //Y2 坐标刻度横线
+        },
+    }
+    ],
+    dataZoom: [{
+        type: 'slider',   //or slider 
+        start: 0,
+        end: 100
+    }, {
+        start: 0,
+        end: 100,
+        handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
+        handleSize: '80%',
+        handleStyle: {
+            color: '#fff',
+            shadowBlur: 3,
+            shadowColor: 'rgba(0, 0, 0, 0.6)',
+            shadowOffsetX: 2,
+            shadowOffsetY: 2
+        }
+    }],
+    series: [
+        {
+            name:legend[0],
+            type:'line',
+            yAxisIndex:0,
+            symbol:'none',
+            data:<?php echo json_encode($data['data']); ?>
+        },
+        {
+            name:legend[2],
+            type:'line',
+            yAxisIndex:1,
+            //symbol:'none',
+            smooth:false,
+            data:<?php echo json_encode($data2['data']); ?>
+        }
+    ]
+};
+
+if (option && typeof option === "object") {
+    myChart.setOption(option, true);
+}
+       </script>
+   </body>
+</html>