feat(multimodel): support multimodal memory display and improve code style

api/app/models/memory_perceptual_model.py

@@ -7,6 +7,7 @@ from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.dialects.postgresql import JSONB
 
 from app.db import Base
+from app.schemas import FileType
 
 
 class PerceptualType(IntEnum):
@@ -15,6 +16,16 @@ class PerceptualType(IntEnum):
     TEXT = 3
     CONVERSATION = 4
 
+    @staticmethod
+    def trans_from_file_type(file_type: FileType | str):
+        type_map = {
+            FileType.IMAGE: PerceptualType.VISION,
+            FileType.AUDIO: PerceptualType.AUDIO,
+            FileType.VIDEO: PerceptualType.VISION,
+            FileType.DOCUMENT: PerceptualType.TEXT
+        }
+        return type_map.get(file_type, PerceptualType.TEXT)
+
 
 class FileStorageService(IntEnum):
     LOCAL = 1