refactor: 前端库清理、页面废弃、DB→API 数据源替换

- 删除重复库文件：lib/DataTables-2/、lib/echarts/、libai/、css/fontawesome/ 等 179 个冗余文件
- 下载外部 CDN 到本地：Mermaid、AOS、Google Fonts（Inter/Noto Serif SC/Noto Sans SC）
- 所有第三方库统一到 lib/，按库名-版本号命名
- 更新 8 个 research HTML 文件引用路径

- stock_his_pro → /api/stockbasic/（getStockHist、recentPrice）
- stock_all_pro → /api/stockinfo/（tscodeToName）
- index_hist_pro → /api/indexDatas/（getIndexData）
- 新增 callDoorcomeApi() 共享函数
- 被替换表的 DB 查询代码完全删除，无回退

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

inc/getData.inc.php

@@ -1,5 +1,6 @@
 <?php
 include_once __DIR__."/config.php";
+include_once __DIR__."/functions.inc.php";
 /*
 上证指数：000001.SH
 深证成指：399001.SZ
@@ -7,35 +8,21 @@ include_once __DIR__."/config.php";
 创业板指：399006.SZ
 */
 function getIndexData($ts_code,$day_st,$day_end){
-$mysqli = get_mysqli_connection();
-
-$sql = "select trade_date, close from index_hist_pro where ts_code = ? and trade_date >= ?";
-$params = [$ts_code, $day_st];
-if($day_end) {
-    $sql .= " and trade_date <= ?";
-    $params[] = $day_end;
-}
-$sql .= " order by trade_date asc";
-$result = db_query($mysqli, $sql, $params);
-
-$tDate=$idx=$data=array();
-
-if($result && $result->num_rows>0) {
-    #$data = $result->fetch_all();
-    while($row=$result->fetch_assoc()){
-        $trade_date=substr($row['trade_date'],0,4).'-'.substr($row['trade_date'],4,2).'-'.substr($row['trade_date'],6,2);
-        $trade_date1=strtotime($row['trade_date']);
-        array_push($tDate,$trade_date);
-        array_push($idx,$row['close']);
-        array_push($data,array("value"=>array($trade_date,round($row['close'],2))));
+    $tDate=$idx=$data=array();
+    $ds = preg_replace('/\D/', '', $day_st);
+    $de = $day_end ? preg_replace('/\D/', '', $day_end) : date('Ymd');
+    $resp = callDoorcomeApi('indexDatas', ['tscode' => $ts_code, 'start_date' => $ds, 'end_date' => $de]);
+    if ($resp && is_array($resp)) {
+        foreach ($resp as $row) {
+            $d = substr($row['trade_date'],0,4).'-'.substr($row['trade_date'],4,2).'-'.substr($row['trade_date'],6,2);
+            array_push($tDate, $d);
+            array_push($idx, $row['close']);
+            array_push($data, ["value" => [$d, round($row['close'], 2)]]);
+        }
     }
+    return array('tDate'=>$tDate,'idx'=>$idx,'data'=>$data);
 }
-#Free result and close connection.
 
-$result->free();
-$mysqli->close();
-return array('tDate'=>$tDate,'idx'=>$idx,'data'=>$data);
-}
 /*
 #LX:    序号 1-6,分别代表基金，QFII, 社保，券商，保险，信托
 #share: vposition 市值 f10, sahreHDnum 股数 f9