feat: 增强抽奖管理功能，支持手动创建、更新和删除期号

- 新增 API 路由和控制器，允许管理员手动创建、更新和删除抽奖期号。
- 更新抽奖调度逻辑，确保在抽奖时间和封盘时间的管理上更加灵活。
- 添加多语言支持的错误信息，提升用户体验。
- 更新测试用例，确保新功能的正确性和稳定性。

app/Services/Draw/DrawHallSnapshotBuilder.php

@@ -94,12 +94,38 @@ final class DrawHallSnapshotBuilder
             return $bettingOpen;
         }
 
+        $upcoming = Draw::query()
+            ->whereNotIn('status', [
+                DrawStatus::Settled->value,
+                DrawStatus::Cancelled->value,
+            ])
+            ->where(function ($q) use ($nowUtc): void {
+                $q->where(function ($q2) use ($nowUtc): void {
+                    $q2->whereNotNull('close_time')
+                        ->where('close_time', '>', $nowUtc);
+                })->orWhere(function ($q2) use ($nowUtc): void {
+                    $q2->whereNull('close_time')
+                        ->whereNotNull('draw_time')
+                        ->where('draw_time', '>', $nowUtc);
+                });
+            })
+            ->orderBy('draw_time')
+            ->get();
+
+        foreach ($upcoming as $candidate) {
+            if ($this->isStalePendingRow($candidate, $nowUtc)) {
+                continue;
+            }
+
+            return $candidate;
+        }
+
         $chronological = Draw::query()
             ->whereNotIn('status', [
                 DrawStatus::Settled->value,
                 DrawStatus::Cancelled->value,
             ])
-            ->orderBy('draw_time')
+            ->orderByDesc('draw_time')
             ->first();
 
         if ($chronological !== null && $this->isCooldownExpired($chronological, $nowUtc)) {
@@ -120,6 +146,23 @@ final class DrawHallSnapshotBuilder
         return $chronological;
     }
 
+    /** 调度未跑时：库内仍是 pending，但封盘/开奖时刻已过，不应再作为大厅「当期」。 */
+    private function isStalePendingRow(Draw $draw, Carbon $nowUtc): bool
+    {
+        if ((string) $draw->status !== DrawStatus::Pending->value) {
+            return false;
+        }
+
+        $closeUtc = $draw->close_time;
+        if ($closeUtc instanceof Carbon && $closeUtc <= $nowUtc) {
+            return true;
+        }
+
+        $drawUtc = $draw->draw_time;
+
+        return $drawUtc instanceof Carbon && $drawUtc <= $nowUtc;
+    }
+
     private function isCooldownExpired(Draw $draw, Carbon $nowUtc): bool
     {
         return (string) $draw->status === DrawStatus::Cooldown->value
@@ -167,6 +210,11 @@ final class DrawHallSnapshotBuilder
             ? max(0, (int) $target->draw_time->getTimestamp() - (int) $nowUtc->getTimestamp())
             : 0;
 
+        $startUtc = $target->start_time;
+        $secsToStart = ($startUtc !== null && $startUtc > $nowUtc)
+            ? max(0, (int) $startUtc->getTimestamp() - (int) $nowUtc->getTimestamp())
+            : 0;
+
         $coolingRemain = null;
         if (
             $target->cooling_end_time instanceof Carbon
@@ -180,7 +228,11 @@ final class DrawHallSnapshotBuilder
 
         $effectiveStatus = $this->effectiveHallDisplayStatus($target, $nowUtc);
 
+        $scheduleTz = (string) config('lottery.draw.timezone', 'UTC');
+
         $payload = [
+            'schedule_timezone' => $scheduleTz,
+            'schedule_now' => $nowUtc->copy()->timezone($scheduleTz)->format('Y-m-d H:i:s'),
             'draw_no' => $target->draw_no,
             'business_date' => $target->business_date instanceof Carbon
                 ? $target->business_date->format('Y-m-d')
@@ -191,6 +243,7 @@ final class DrawHallSnapshotBuilder
             'close_time' => $target->close_time?->toIso8601String(),
             'draw_time' => $target->draw_time?->toIso8601String(),
             'seconds_to_close' => $secsToClose,
+            'seconds_to_start' => $secsToStart,
             'seconds_to_draw' => $secsToDraw,
             'cooling_end_time' => $target->cooling_end_time?->toIso8601String(),
             'seconds_remaining_in_cooldown' => $coolingRemain,