修改 CropLogic 中的 useFertilizer 方法，使用 crop_growth_time 参数减少当前阶段时间，并修复枚举相关问题

app/Module/Farm/Logics/CropLogic.php

@@ -306,17 +306,23 @@ class CropLogic
             // 更新作物信息
             $crop->fertilized = true;
 
-            //todo 正确的： 根据  crop_growth_time 参数，x秒，来减少当前阶段时间
-
-            // 缩短当前阶段时间（假设化肥效果是缩短30%的时间） todo 废弃
+            // 根据 crop_growth_time 参数减少当前阶段时间
             if ($crop->stage_end_time) {
                 $currentTime = now();
                 $endTime = $crop->stage_end_time;
                 $remainingTime = $currentTime->diffInSeconds($endTime, false);
 
                 if ($remainingTime > 0) {
-                    $reducedTime = (int)($remainingTime * 0.3);
+                    // 确保减少的时间不超过剩余时间
+                    $reducedTime = min($crop_growth_time, $remainingTime);
                     $crop->stage_end_time = $endTime->subSeconds($reducedTime);
+
+                    Log::info('化肥减少生长时间', [
+                        'crop_id' => $crop->id,
+                        'reduced_time' => $reducedTime,
+                        'original_end_time' => $endTime->toDateTimeString(),
+                        'new_end_time' => $crop->stage_end_time->toDateTimeString()
+                    ]);
                 }
             }
 
@@ -586,16 +592,16 @@ class CropLogic
         $currentStage = $crop->growth_stage;
 
         // 如果当前是成熟期，且超过一定时间，则进入枯萎期
-        if ($currentStage === GROWTH_STAGE::MATURE) {
+        if ($currentStage === GROWTH_STAGE::MATURE->value) {
             // 成熟期持续时间，默认为24小时
             $matureDuration = 24 * 60 * 60;
 
             // 如果成熟期已经超过指定时间，则进入枯萎期
-            if ($crop->stage_end_time && now()->diffInSeconds($crop->stage_end_time->subSeconds($matureDuration)) > $matureDuration) {
-                return GROWTH_STAGE::WITHERED;
+            if ($crop->stage_end_time && now()->diffInSeconds($crop->stage_end_time->copy()->subSeconds($matureDuration)) > $matureDuration) {
+                return GROWTH_STAGE::WITHERED->value;
             }
 
-            return GROWTH_STAGE::MATURE;
+            return GROWTH_STAGE::MATURE->value;
         }
 
         // 正常阶段递增
@@ -620,20 +626,20 @@ class CropLogic
         $now = now();
 
         switch ($stage) {
-            case GROWTH_STAGE::SEED:
+            case GROWTH_STAGE::SEED->value:
                 return $now->addSeconds($seed->seed_time);
 
-            case GROWTH_STAGE::SPROUT:
+            case GROWTH_STAGE::SPROUT->value:
                 return $now->addSeconds($seed->sprout_time);
 
-            case GROWTH_STAGE::GROWTH:
+            case GROWTH_STAGE::GROWTH->value:
                 return $now->addSeconds($seed->growth_time);
 
-            case GROWTH_STAGE::MATURE:
+            case GROWTH_STAGE::MATURE->value:
                 // 成熟期持续24小时后进入枯萎期
                 return $now->addHours(24);
 
-            case GROWTH_STAGE::WITHERED:
+            case GROWTH_STAGE::WITHERED->value:
                 // 枯萎期没有结束时间
                 return null;