feat: Add base project structure with API and web components

api/app/models/end_user_model.py

@@ -0,0 +1,24 @@
+import datetime
+import uuid
+from sqlalchemy import Column, String, DateTime, ForeignKey
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import relationship
+from app.db import Base
+
+class EndUser(Base):
+    __tablename__ = "end_users"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, nullable=False, index=True)
+    app_id = Column(UUID(as_uuid=True), ForeignKey("apps.id"), nullable=False)
+    # end_user_id = Column(String, nullable=False, index=True)
+    other_id = Column(String, nullable=True)  # Store original user_id
+    other_name = Column(String, default="", nullable=False)
+    other_address = Column(String, default="", nullable=False)
+    created_at = Column(DateTime, default=datetime.datetime.now)
+    updated_at = Column(DateTime, default=datetime.datetime.now, onupdate=datetime.datetime.now)
+
+    # 与 App 的反向关系
+    app = relationship(
+        "App",
+        back_populates="end_users"
+    )