feat: wecom robot markdown message support

printing/apps.py

@@ -11,7 +11,7 @@ class PrintingConfig(AppConfig):
 
     def ready(self):
         """注册信号处理函数"""
-        from stateflow.signals import process_completed
+        from stateflow.signals import process_completed, state_advanced
         from .models import PrintingJob
         from . import handlers
         
@@ -20,8 +20,18 @@ class PrintingConfig(AppConfig):
             handlers.on_printing_job_process_completed,
             sender=PrintingJob
         )
+
+        # 监听 PrintingJob 状态推进信号（每次推进都会触发）
+        state_advanced.connect(
+            handlers.on_printing_job_state_advanced,
+            sender=PrintingJob
+        )
         
         logger.info(
             f'[printing.apps] 已注册 process_completed 信号处理器, '
             f'sender={PrintingJob}, handler={handlers.on_printing_job_process_completed}'
+        )
+        logger.info(
+            f'[printing.apps] 已注册 state_advanced 信号处理器, '
+            f'sender={PrintingJob}, handler={handlers.on_printing_job_state_advanced}'
         )