feature：新增提示词工坊功能

backend/app/models/__init__.py

@@ -17,6 +17,7 @@ from app.models.regeneration_task import RegenerationTask
 from app.models.career import Career, CharacterCareer
 from app.models.prompt_template import PromptTemplate
 from app.models.foreshadow import Foreshadow
+from app.models.prompt_workshop import PromptWorkshopItem, PromptSubmission, PromptWorkshopLike
 
 __all__ = [
     "Project",
@@ -42,5 +43,8 @@ __all__ = [
     "Career",
     "CharacterCareer",
     "PromptTemplate",
-    "Foreshadow"
+    "Foreshadow",
+    "PromptWorkshopItem",
+    "PromptSubmission",
+    "PromptWorkshopLike"
 ]