fix: 优化 soldOutBucketKey 方法逻辑，确保数字和字母处理一致性；更新数据库填充器以对齐仪表盘场景

app/Services/Admin/AdminDashboardSnapshotBuilder.php

@@ -243,24 +243,33 @@ final class AdminDashboardSnapshotBuilder
         ];
     }
 
-    /** @return 'd4'|'d3'|'d2'|'special'|'other' */
+    /**
+     * 与仪表盘前端维度一致：先按「提取数字位数」分 4D/3D/2D；含字母且不足 3 位有效数字的视为特别号。
+     *
+     * @return 'd4'|'d3'|'d2'|'special'|'other'
+     */
     private function soldOutBucketKey(string $normalizedNumber): string
     {
         $raw = trim($normalizedNumber);
-        if (preg_match('/[A-Za-z]/', $raw) === 1) {
+        $digits = preg_replace('/\D/', '', $raw) ?? '';
+        $digitLen = strlen($digits);
+        $hasLetter = preg_match('/[A-Za-z]/', $raw) === 1;
+
+        if ($hasLetter && $digitLen < 3) {
             return 'special';
         }
-        $digits = preg_replace('/\D/', '', $raw) ?? '';
-        $len = strlen($digits) > 0 ? strlen($digits) : strlen($raw);
-        if ($len >= 4) {
+        if ($digitLen >= 4) {
             return 'd4';
         }
-        if ($len === 3) {
+        if ($digitLen === 3) {
             return 'd3';
         }
-        if ($len === 2) {
+        if ($digitLen === 2) {
             return 'd2';
         }
+        if ($hasLetter) {
+            return 'special';
+        }
 
         return 'other';
     }