feat(history): 新增特码冷热查询功能 — 选定某一期向前y期判定冷热号

在history页面添加「特码冷热」按钮，用户可选择指定期号并设定向前期数
系统统计该期特码在向前范围内的出现频率，与平均值对比判定冷/温/热号

application/admin/controller/History.php

@@ -22,7 +22,7 @@ class History extends Backend
      * 无需额外权限检查的方法（但仍在 admin 模块内，需要 admin 登录）
      * @var array
      */
-    protected $noNeedRight = ['missingNum', 'trendData', 'hotColdNumbers', 'colorWaveAnalysis', 'zodiacAnalysis', 'oddEvenAnalysis', 'bigSmallAnalysis', 'specialTrend', 'consecutiveNumbers', 'tailNumbers', 'dashboard', 'specialHeatmap'];
+    protected $noNeedRight = ['missingNum', 'trendData', 'hotColdNumbers', 'colorWaveAnalysis', 'zodiacAnalysis', 'oddEvenAnalysis', 'bigSmallAnalysis', 'specialTrend', 'consecutiveNumbers', 'tailNumbers', 'dashboard', 'specialHeatmap', 'specialHotColdAction'];
 
     public function _initialize()
     {
@@ -236,6 +236,28 @@ class History extends Backend
         }
     }
 
+    /**
+     * 特码冷热查询（指定期号向前y期判定）
+     */
+    public function specialHotColdAction()
+    {
+        if ($this->request->isAjax()) {
+            $expect = $this->request->get('expect', '');
+            if (empty($expect)) {
+                $this->error('请输入期号');
+            }
+            $lookback = $this->request->get('lookback', 30, 'intval');
+            if ($lookback < 10 || $lookback > 100) {
+                $this->error('向前期数范围必须在 10-100 之间');
+            }
+            $result = $this->model->getSpecialHotColdByExpect($expect, $lookback);
+            if ($result === false) {
+                $this->error('未找到该期号数据');
+            }
+            $this->success('查询成功', null, $result);
+        }
+    }
+
     /**
      * 特码热力图
      */