feat: Implement SQLAlchemy enum helper and normalize enum values in database initialization

models/scenario.py

@@ -6,7 +6,6 @@ from typing import TYPE_CHECKING, List
 from sqlalchemy import (
     Date,
     DateTime,
-    Enum as SQLEnum,
     ForeignKey,
     Integer,
     Numeric,
@@ -19,7 +18,7 @@ from sqlalchemy.sql import func
 
 from config.database import Base
 from services.currency import normalise_currency
-from .enums import ResourceType, ScenarioStatus
+from .enums import ResourceType, ScenarioStatus, sql_enum
 
 if TYPE_CHECKING:  # pragma: no cover
     from .financial_input import FinancialInput
@@ -43,7 +42,7 @@ class Scenario(Base):
     name: Mapped[str] = mapped_column(String(255), nullable=False)
     description: Mapped[str | None] = mapped_column(Text, nullable=True)
     status: Mapped[ScenarioStatus] = mapped_column(
-        SQLEnum(ScenarioStatus, name="scenariostatus", create_type=False),
+        sql_enum(ScenarioStatus, name="scenariostatus"),
         nullable=False,
         default=ScenarioStatus.DRAFT,
     )
@@ -53,7 +52,7 @@ class Scenario(Base):
         Numeric(5, 2), nullable=True)
     currency: Mapped[str | None] = mapped_column(String(3), nullable=True)
     primary_resource: Mapped[ResourceType | None] = mapped_column(
-        SQLEnum(ResourceType, name="resourcetype", create_type=False), nullable=True
+        sql_enum(ResourceType, name="resourcetype"), nullable=True
     )
     created_at: Mapped[datetime] = mapped_column(
         DateTime(timezone=True), nullable=False, server_default=func.now()