feat: enhance organization management; add member registration and validation, update user registration flow, and improve enum handling

app/models/organization_member.py

@@ -8,7 +8,7 @@ from pydantic import BaseModel, ConfigDict
 from sqlalchemy import DateTime, Enum as SqlEnum, ForeignKey, Integer, UniqueConstraint, func
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
-from app.models.base import Base
+from app.models.base import Base, enum_values
 
 
 class OrganizationRole(StrEnum):
@@ -30,7 +30,11 @@ class OrganizationMember(Base):
     organization_id: Mapped[int] = mapped_column(ForeignKey("organizations.id", ondelete="CASCADE"))
     user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
     role: Mapped[OrganizationRole] = mapped_column(
-        SqlEnum(OrganizationRole, name="organization_role"),
+        SqlEnum(
+            OrganizationRole,
+            name="organization_role",
+            values_callable=enum_values,
+        ),
         nullable=False,
         default=OrganizationRole.MEMBER,
     )