feat: added print_count api, added merchant setting model, added manual mode setting for purchase order

printing/models.py

@@ -1,5 +1,5 @@
-from django.db import models
 from django.conf import settings
+from django.db import models
 from flower.common import ModelBase
 from basic_info import models as basic_models
 from stateflow import models as stateflow_models
@@ -15,7 +15,12 @@ class PlateOrder(ModelBase):
     plate_type = models.CharField(max_length=20, blank=True, null=True, verbose_name='起版情况')  # 首版/复版等
     plate_date = models.DateTimeField(null=True, blank=True, verbose_name='下版时间')
     plate_method = models.CharField(max_length=50, blank=True, null=True, verbose_name='开版方式')
-    plate_image = models.FileField(upload_to='plate_images/', null=True, blank=True, verbose_name='开版图')
+    plate_image = models.JSONField(
+        default=list,
+        blank=True,
+        verbose_name='开版图',
+        help_text='存储多个开版图片引用信息，例如 [{"file_id": 1, "name": "封面", "path": "/media/xxx"}]'
+    )
     image_name = models.TextField(blank=True, null=True, verbose_name='图片名称')
     plate_notes = models.TextField(blank=True, null=True, verbose_name='打版注意事项')
     reprint_reason = models.TextField(blank=True, null=True, verbose_name='复版原因')
@@ -68,7 +73,7 @@ class PlateOrder(ModelBase):
     difficulty_rating = models.CharField(max_length=20, blank=True, null=True, verbose_name='难度评级')
     
     # 时间相关
-    required_completion_date = models.DateField(null=True, blank=True, verbose_name='要求完成时间')
+    required_completion_date = models.DateTimeField(null=True, blank=True, verbose_name='要求完成时间')
     completion_date = models.DateTimeField(null=True, blank=True, verbose_name='完成时间')
     
     # 产品信息
@@ -95,6 +100,7 @@ class PlateOrder(ModelBase):
     is_ordered = models.BooleanField(default=False, verbose_name='是否已下单')
     is_invalid = models.BooleanField(default=False, verbose_name='是否作废')
     customer_feedback = models.TextField(blank=True, null=True, verbose_name='客户修改意见')
+    print_count = models.PositiveIntegerField(default=0, verbose_name='打印次数')
     
     # 流程管理
     process = models.IntegerField(default=settings.PLATE_ORDER_DEFAULT_PROCESS_ID, verbose_name='关联流程')
@@ -228,6 +234,7 @@ class PrintingOrder(ModelBase):
     printing_warn = models.TextField(blank=True, null=True, verbose_name='打印注意事项')
     rolling_warn = models.TextField(blank=True, null=True, verbose_name='滚筒注意事项')
     production_warn = models.TextField(blank=True, null=True, verbose_name='生产注意事项')
+    print_count = models.PositiveIntegerField(default=0, verbose_name='打印次数')
     is_invalid = models.BooleanField(default=False, verbose_name='是否作废')
     process = models.ForeignKey(
         stateflow_models.Process,