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>

index-2.php

@@ -82,32 +82,32 @@
                 </div>
                 
                 <div class="space-y-3">
-                    <a href="#" onclick="openurl('https://echart.doorcome.cn/stock_trend.php');" 
+                    <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/stock_trend.php');" 
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-arrow-trend-up text-primary w-6"></i>
                         <span>股价VS PE/PB/PS 趋势</span>
                     </a>
-                    <a href="#" onclick="openurl('https://echart.doorcome.cn/stockep.php');" 
+                    <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/stockep.php');" 
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-balance-scale text-secondary w-6"></i>
                         <span>股价VS EP</span>
                     </a>
-                    <a href="#" onclick="openurl('https://echart.doorcome.cn/stockmargin.php');" 
+                    <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/stockmargin.php');" 
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-money-bill-wave text-green-500 w-6"></i>
                         <span>股价VS 融资融券余额</span>
                     </a>
-                    <!--<a href="#" onclick="openurl('https://echart.doorcome.cn/hkholdbycode.php');" 
+                    <!--<a href="#" onclick="openurl('https://echart.doorcome.cn/charts/hkholdbycode.php');" 
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-globe-asia text-blue-500 w-6"></i>
                         <span>股价VS 北向资金持股</span>-->
                     </a>
-                    <a href="#" onclick="openurl('https://echart.doorcome.cn/stock_ih.php');" 
+                    <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/stock_ih.php');" 
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-building-columns text-purple-500 w-6"></i>
                         <span>股价VS 机构持仓趋势</span>
                     </a>
-                    <a href="#" onclick="openurl('https://echart.doorcome.cn/stockkeydata.php');" 
+                    <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/stockkeydata.php');" 
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-table text-yellow-500 w-6"></i>
                         <span>个股基本面数据</span>
@@ -117,27 +117,27 @@
                 <div class="mt-6 pt-6 border-t border-gray-200">
                     <h4 class="font-medium mb-3">指数分析</h4>
                     <div class="space-y-3">
-                        <a href="#" onclick="openurl('https://echart.doorcome.cn/index_trend.php');" 
+                        <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/index_trend.php');" 
                            class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                             <i class="fa-solid fa-chart-area text-indigo-500 w-6"></i>
                             <span>指数VS PE/PB/PS/市值 趋势</span>
                         </a>
-                        <a href="#" onclick="openurl('https://echart.doorcome.cn/index_ih.php');" 
+                        <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/index_ih.php');" 
                            class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                             <i class="fa-solid fa-institution text-teal-500 w-6"></i>
                             <span>指数VS 机构持仓趋势</span>
                         </a>
-                        <a href="#" onclick="openurl('https://echart.doorcome.cn/index_mv_all.php');" 
+                        <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/index_mv_all.php');" 
                            class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                             <i class="fa-solid fa-chart-pie text-orange-500 w-6"></i>
                             <span>指数VS 两市总市值</span>
                         </a>
-                        <a href="#" onclick="openurl('https://echart.doorcome.cn/index_margin.php');" 
+                        <a href="#" onclick="openurl('https://echart.doorcome.cn/charts/index_margin.php');" 
                            class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                             <i class="fa-solid fa-bank text-red-500 w-6"></i>
                             <span>指数VS 融资余额</span>
                         </a>
-                        <!--<a href="#" onclick="openurl('https://echart.doorcome.cn/moneyflow.php');" 
+                        <!--<a href="#" onclick="openurl('https://echart.doorcome.cn/charts/moneyflow.php');" 
                            class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                             <i class="fa-solid fa-exchange text-pink-500 w-6"></i>
                             <span>指数VS 沪深港通资金流向</span>
@@ -160,22 +160,22 @@
                 </div>
                 
                 <div class="space-y-3">
-                    <a href="https://echart.doorcome.cn/realestate.php" target="_blank"
+                    <a href="https://echart.doorcome.cn/charts/realestate.php" target="_blank"
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-building text-blue-500 w-6"></i>
                         <span>房地产挂牌数量趋势(宁波)</span>
                     </a>
-                    <a href="https://echart.doorcome.cn/estateNewTradeDaily.php" target="_blank"
+                    <a href="https://echart.doorcome.cn/charts/estateNewTradeDaily.php" target="_blank"
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-key text-green-500 w-6"></i>
                         <span>新房每日成交量(宁波)</span>
                     </a>
-                    <a href="https://echart.doorcome.cn/estateTradeDaily.php" target="_blank"
+                    <a href="https://echart.doorcome.cn/charts/estateTradeDaily.php" target="_blank"
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-exchange-alt text-yellow-500 w-6"></i>
                         <span>二手房每日成交量(宁波)</span>
                     </a>
-                    <a href="https://echart.doorcome.cn/estateListDaily.php" target="_blank"
+                    <a href="https://echart.doorcome.cn/charts/estateListDaily.php" target="_blank"
                        class="flex items-center p-3 border border-gray-200 rounded-lg hover:bg-gray-50 transition-all">
                         <i class="fa-solid fa-list-alt text-purple-500 w-6"></i>
                         <span>二手房每日挂牌量(宁波)</span>