Feature/memory perceptual (#48)

* perf(workflow): pass JSON data to HTTP node as a string

* perf(prompt_opt): simplify log output

* feat(memory): add perceptual memory page API and related database schema

* perf(log): clean up API exception log output

* perf(memory): simplify perceptual memory timeline response by removing metadata

api/app/models/memory_perceptual_model.py

@@ -0,0 +1,40 @@
+import datetime
+import uuid
+from enum import IntEnum
+
+from sqlalchemy import Column, ForeignKey, Integer, DateTime, String
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.dialects.postgresql import JSONB
+
+from app.db import Base
+
+
+class PerceptualType(IntEnum):
+    VISION = 1
+    AUDIO = 2
+    TEXT = 3
+    CONVERSATION = 4
+
+
+class FileStorageType(IntEnum):
+    LOCAL = 1
+    REMOTE = 2
+
+
+class MemoryPerceptualModel(Base):
+    __tablename__ = "memory_perceptual"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    end_user_id = Column(UUID(as_uuid=True), ForeignKey("end_users.id"), index=True)
+
+    perceptual_type = Column(Integer, index=True, nullable=False, comment="感知类型")
+
+    storage_service = Column(Integer, default=0, comment="存储服务类型")
+    file_path = Column(String, nullable=False, comment="文件路径")
+    file_name = Column(String, nullable=False, comment="文件名称")
+    file_ext = Column(String, nullable=False, comment="文件后缀名")
+
+    summary = Column(String, comment="摘要")
+    meta_data = Column(JSONB, comment="元信息")
+
+    created_time = Column(DateTime, default=datetime.datetime.now, comment="创建时间")