feat(dashboard): 添加区域转移概率统计功能

将1-49数字分为5个区域(1-10/11-20/21-30/31-40/41-49)，
统计特码从一个区域转移到另一个区域的概率矩阵，
在控制台页面以彩色表格展示

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', 'specialHotColdAction'];
+    protected $noNeedRight = ['missingNum', 'trendData', 'hotColdNumbers', 'colorWaveAnalysis', 'zodiacAnalysis', 'oddEvenAnalysis', 'bigSmallAnalysis', 'specialTrend', 'consecutiveNumbers', 'tailNumbers', 'dashboard', 'specialHeatmap', 'specialHotColdAction', 'zoneTransition'];
 
     public function _initialize()
     {
@@ -313,5 +313,20 @@ class History extends Backend
         }
     }
 
+    /**
+     * 区域转移概率统计
+     */
+    public function zoneTransition()
+    {
+        if ($this->request->isAjax()) {
+            $periods = $this->request->get('periods', 100, 'intval');
+            if ($periods < 10 || $periods > 500) {
+                $this->error('期数范围必须在 10-500 之间');
+            }
+            $result = $this->model->getZoneTransition($periods);
+            $this->success('查询成功', null, $result);
+        }
+    }
+
 
 }

application/admin/model/History.php

@@ -464,7 +464,8 @@ class History extends Model
             'bigsmall' => $this->getBigSmallAnalysis($periods, 'special'),
             'special' => $this->getSpecialTrend($periods),
             'tailnumbers' => $this->getTailNumbers($periods, 'special'),
-            'heatmap' => $this->getSpecialHeatmap($periods)
+            'heatmap' => $this->getSpecialHeatmap($periods),
+            'zonetransition' => $this->getZoneTransition($periods)
         ];
     }
 
@@ -662,6 +663,69 @@ class History extends Model
         return ['hot' => $hot, 'cold' => $cold, 'warm' => $warm];
     }
 
+    /**
+     * 区域转移概率统计
+     * 将1-49分为5个区域，统计特码从一个区域转移到另一个区域的概率
+     * 区域1: 1-10, 区域2: 11-20, 区域3: 21-30, 区域4: 31-40, 区域5: 41-49
+     * @param int $periods 查询最近多少期
+     * @return array {zones: [], matrix: [], probabilities: [], total_transitions: int}
+     */
+    public function getZoneTransition($periods = 100)
+    {
+        $history = $this
+            ->field('expect,num7,openTime')
+            ->order('openTime', 'asc')
+            ->limit($periods)
+            ->select();
+
+        if (empty($history) || count($history) < 2) {
+            return ['zones' => ['1-10','11-20','21-30','31-40','41-49'], 'matrix' => [], 'probabilities' => [], 'total_transitions' => 0];
+        }
+
+        $zoneLabels = ['1-10', '11-20', '21-30', '31-40', '41-49'];
+        $matrix = array_fill(0, 5, array_fill(0, 5, 0));
+        $rowTotals = array_fill(0, 5, 0);
+
+        $getZone = function ($num) {
+            if ($num <= 10) return 0;
+            if ($num <= 20) return 1;
+            if ($num <= 30) return 2;
+            if ($num <= 40) return 3;
+            return 4;
+        };
+
+        $totalTransitions = 0;
+        for ($i = 0; $i < count($history) - 1; $i++) {
+            $currentNum = (int)$history[$i]['num7'];
+            $nextNum = (int)$history[$i + 1]['num7'];
+            if ($currentNum < 1 || $currentNum > 49 || $nextNum < 1 || $nextNum > 49) continue;
+
+            $from = $getZone($currentNum);
+            $to = $getZone($nextNum);
+            $matrix[$from][$to]++;
+            $rowTotals[$from]++;
+            $totalTransitions++;
+        }
+
+        // 计算概率矩阵
+        $probabilities = array_fill(0, 5, array_fill(0, 5, 0));
+        for ($i = 0; $i < 5; $i++) {
+            if ($rowTotals[$i] > 0) {
+                for ($j = 0; $j < 5; $j++) {
+                    $probabilities[$i][$j] = round($matrix[$i][$j] / $rowTotals[$i] * 100, 1);
+                }
+            }
+        }
+
+        return [
+            'zones' => $zoneLabels,
+            'matrix' => $matrix,
+            'probabilities' => $probabilities,
+            'row_totals' => $rowTotals,
+            'total_transitions' => $totalTransitions
+        ];
+    }
+
     /**
      * 特码热力图数据
      * @param int $periods 查询最近多少期