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>

js/chartSix.js

@@ -1,3 +1,4 @@
+var cfg = window.chartConfig;
 $(function (){
     var dom = document.getElementById("container");
     var myChart = echarts.init(dom,'dark');
@@ -5,9 +6,9 @@ $(function (){
     var option = null;
     option = {
         title: {
-            //text: legend[0]+' V.S '+legend[2],
-            text: headtxt,
-            subtext: subtxt,
+            //text: cfg.legend[0]+' V.S '+cfg.legend[2],
+            text: cfg.title,
+            subtext: cfg.subtitle,
             textAlign:'center',
             left:'50%'
         },
@@ -15,7 +16,7 @@ $(function (){
             trigger: 'axis'
         },
         legend: {
-            data:legend,
+            data: cfg.legend,
             right:'20'
         },
         grid: {
@@ -36,12 +37,12 @@ $(function (){
         },
         yAxis: [{
             type: 'value',
-            name:legend[0], //图列
+            name: cfg.legend[0], //图列
             show:true
         },
             {
                 type:'value',
-                name:legend[2]+unit,  //图例
+                name: cfg.legend[2]+cfg.unit,  //图例
                 //scale:true,
                 boundaryGap:false,
                 show:true,
@@ -69,19 +70,19 @@ $(function (){
         }],
         series: [
             {
-                name:legend[0],
+                name: cfg.legend[0],
                 type:'line',
                 yAxisIndex:0,
                 symbol:'none',
-                data:data1
+                data: cfg.data
             },
             {
-                name:legend[2],
+                name: cfg.legend[2],
                 type:'line',
                 yAxisIndex:1,
                 symbol:'none',  //数据圆点
                 smooth:false,
-                data: data2
+                data: cfg.data2
             }
         ]
     };