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/stockep.php

@@ -0,0 +1,91 @@
+<?php
+include_once "../inc/getBasic.inc.php";
+$_REQUEST['ts_code']=$_REQUEST['ts_code']?$_REQUEST['ts_code']:'000001';
+$_REQUEST['t_start']=$_REQUEST['t_start']?$_REQUEST['t_start']:'2020-01-01';
+$_REQUEST['t_end']=$_REQUEST['t_end']?$_REQUEST['t_end']:date('Y-m-d');
+$ts_name = tscodeToName(ts_code_conv($_REQUEST['ts_code']));
+$title="股价VS EP趋势:".$ts_name.'('.$_REQUEST['ts_code'].')';
+include_once "../html/head.php";
+?>
+<script src="../js/renderCharts.js"></script>
+<form name="main" id="main" method="get"> <div style="width:100%;text-align:center">
+股票代码: <input type='text' name='ts_code' id='ts_code' width="30px" value='<?=$_REQUEST['ts_code']?>' >
+开始时间: <input type='date' name='t_start' id='t_start' width='30px' value='<?=$_REQUEST['t_start']?>' >
+结束时间: <input type='date' name='t_end' id='t_end' width='30px' value='<?=$_REQUEST['t_end']?>' >
+ <button id="submitBtn" class="btn-submit"><span>查询数据</span></button>
+<div >&nbsp;</div>
+
+</div> </form>
+<div style="margin:0 auto;clear:both;left:100px;width:1000px;height:30px;text-align:left"><span style="color:grey">EP=100*TTM每股收益/股价。如：EP=5表示每股收益率5%</span></div>
+ <!-- 图表容器 -->
+  <div id="container" style="width: 1000px;height:400px; margin: 0 auto 20px;">
+        <div class="loading-overlay" id="loadingOverlay">
+            <div class="spinner"></div>
+            <p style="font-size:18px; color:#2c3e50;">正在加载数据，请稍候...</p>
+        </div>
+
+    </div>
+</div>
+
+
+<script>
+    // 页面加载时初始化图表
+    $(document).ready(function() {
+  
+        // 加载初始数据
+        loadChartData();
+        
+        // 绑定按钮点击事件
+        $('#submitBtn').click(function(e) {
+            //e.preventDefault(); // 阻止表单提交刷新页面
+            $('#loadingOverlay').addClass('active');
+            loadChartData();
+            $('#loadingOverlay').removeClass('active');
+        });
+    });
+
+    // 加载图表数据的函数
+    function loadChartData() {
+        // 显示加载动画
+        $('#loadingOverlay').addClass('active');
+
+        let t_start = $('#t_start').val();
+        let t_end = $('#t_end').val();
+        let ts_code = $("#ts_code").val();
+
+        url =   "https://api.doorcome.cn/api/stockep/?tscode="+ts_code;
+        url +=  "&start_date="+t_start+"&end_date="+t_end;
+        url2 = "https://api.doorcome.cn/api/stockinfo/?tscode="+ts_code;
+        Promise.all([
+            fetch(url),
+            fetch(url2)
+            ])
+            .then(responses => Promise.all(responses.map(r => r.json())))
+            .then(([parsedData,stockInfo]) => {
+                // 图表配置:pe_ttm
+                let codeName = stockInfo[0].name;
+                var params = {};
+                params.chartid='container';
+                params.legend = [codeName,'EP'];
+                params.text = params.legend[0]+' V.S '+params.legend[1];
+                params.data1 = pickData(parsedData, 'trade_date', 'close');
+                params.data2 = pickData(parsedData, 'trade_date', 'basic_ep_ttm');
+                dataCal = calculateStats(params.data2);
+                params.sub_text = "TTM EP Max:"+dataCal['max'];
+                params.sub_text += ",  Min:"+dataCal['min'];
+                params.sub_text += ",  Average:"+dataCal['avg'];
+                params.sub_text += ",  Recent:"+dataCal['last'];
+                doubleLineChart(params);
+               
+            })
+            .catch(error => console.error('数据加载失败:', error))
+            .finally(() => {
+                // 隐藏加载动画
+                $('#loadingOverlay').removeClass('active');
+            });
+    }
+</script>
+
+</div>
+<?php include_once "../html/footer.php"; ?>
+