refactor: 废弃机构持仓图表页面，整理数据库表引用文档

- 将 chartSix.php、chartThree.php、stock_ih.php、index_ih.php 移至 deprecated/
- 从 index.php、index-2.php 移除对应导航链接
- 新增 DB_REFERENCE.md，完整记录 16 张数据库表的使用状态
- 更新 continuation.md

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

deprecated/chartSix.php

@@ -0,0 +1,66 @@
+<?php
+#查询个股价格对应机构持仓的数量
+include_once "../inc/getBasic.inc.php";
+include_once "../inc/getData.inc.php";
+
+$ts_code=ts_code_conv($_REQUEST['ts_code']);
+$ts_name = tscodeToName($ts_code);
+include_once "../html/headChart.php"; //required after $ts_code and $ts_name
+
+$day_st=($_REQUEST['s']=='')?'2012-01-01':$_REQUEST['s'];
+$day_end=($_REQUEST['e']=='')?date('Y-m-d'):$_REQUEST['e'];
+#item:  f9:持股数 f10:持股额 f11:占总股本比例 f12:占流通股比例 
+$item = ($_REQUEST['item']=='')?'f9':$_REQUEST['item'];
+
+switch($item){
+    case 'f9':
+    case 'F9':
+        $unit = ' - 万股';
+        $item_name = "持股数";
+        break;
+    case 'f10':
+    case 'F10':
+        $unit = ' - 万元';
+        $item_name = "持股金额";
+        break;
+    case 'f11':
+    case 'F11':
+        $unit = ' - %';
+        $item_name = "总股本股比例";
+        break;
+    case 'f12':
+    case 'F12':
+        $unit = ' - %';
+        $item_name = "流通股比例";
+        break;
+    default:
+        $unit = '';  
+}
+$data = getStockHist($ts_code,$day_st,$day_end);
+$lx = ''; //define null var avoid error
+$data2 = getIhDataByStock($ts_code,$item,$lx,$day_st,$day_end);
+
+#var_dump($data2['data']);
+$subtext_ext = "Max: ".$data2['data_max'];
+$subtext_ext .= ", Min: ".$data2['data_min'];
+$subtext_ext .= ", Average: ".$data2['data_avg'];
+$subtext_ext .= ", Recent: ".$data2['data_last'];
+
+$legend=array('不复权股价','深证成指',$item_name);
+#$value=json_encode($data['data']);
+?>
+
+<script type="text/javascript">
+window.chartConfig = {
+    data: <?php echo json_encode($data['data']); ?>,
+    data2: <?php echo json_encode($data2['data']); ?>,
+    legend: <?php echo json_encode($legend);?>,
+    unit: '<?php echo $unit; ?>',
+    title: '<?php echo $ts_name.'('.$ts_code.')'; ?>',
+    subtitle: '<?php echo $subtext_ext; ?>'
+};
+
+</script>
+<script type="text/javascript" src="../js/chartSix.js?ver=3.141"></script>
+   </body>
+</html>