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/getBasic.inc.php

@@ -75,42 +75,31 @@ function ts_code_conv($ts_code){
     }
 }
 
+
 function getStockHist($ts_code,$day_st,$day_end){
-$mysqli = get_mysqli_connection();
-$sql = "select trade_date, close from stock_his_pro where ts_code = ? and trade_date >= ?";
-$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,$row['trade_date']);
-        array_push($idx,$row['close']);
-        array_push($data,array("value"=>array($row['trade_date'],$row['close'])));
+    $tDate=$idx=$data=array();
+    $ds = preg_replace('/\D/', '', $day_st);
+    $de = $day_end ? preg_replace('/\D/', '', $day_end) : date('Ymd');
+    $resp = callDoorcomeApi('stockbasic', ['tscode' => $ts_code, 'start_date' => $ds, 'end_date' => $de]);
+    if ($resp && is_array($resp)) {
+        foreach ($resp as $row) {
+            $d = $row['trade_date'];
+            array_push($tDate, $d);
+            array_push($idx, $row['close']);
+            array_push($data, ["value" => [$d, $row['close']]]);
+        }
     }
-}
-#Free result and close connection.
-$result->free();
-$mysqli->close();
-return array('tDate'=>$tDate,'idx'=>$idx,'data'=>$data);
+    return array('tDate'=>$tDate,'idx'=>$idx,'data'=>$data);
 }
 
 function tscodeToName($ts_code){
-    $mysqli = get_mysqli_connection();
-    $result = db_query($mysqli, "select name from stock_all_pro where ts_code = ?", [$ts_code]);
-    if($result && $result->num_rows >0) $row = $result->fetch_assoc();
-    $result->free();
-    $mysqli->close();
-    return $row['name'];
+    $resp = callDoorcomeApi('stockinfo', ['tscode' => $ts_code]);
+    if ($resp && isset($resp[0]['name'])) {
+        return $resp[0]['name'];
+    }
+    return $ts_code;
+}
+
 }
 
 function getBasicExtData($ts_code,$item,$day_st,$day_end){