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

models/project.py

@@ -3,9 +3,9 @@ from __future__ import annotations
 from datetime import datetime
 from typing import TYPE_CHECKING, List
 
-from .enums import MiningOperationType
+from .enums import MiningOperationType, sql_enum
 
-from sqlalchemy import DateTime, Enum as SQLEnum, ForeignKey, Integer, String, Text
+from sqlalchemy import DateTime, ForeignKey, Integer, String, Text
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 from sqlalchemy.sql import func
 
@@ -16,8 +16,6 @@ if TYPE_CHECKING:  # pragma: no cover
     from .pricing_settings import PricingSettings
 
 
-
-
 class Project(Base):
     """Top-level mining project grouping multiple scenarios."""
 
@@ -27,7 +25,7 @@ class Project(Base):
     name: Mapped[str] = mapped_column(String(255), nullable=False, unique=True)
     location: Mapped[str | None] = mapped_column(String(255), nullable=True)
     operation_type: Mapped[MiningOperationType] = mapped_column(
-        SQLEnum(MiningOperationType, name="miningoperationtype", create_type=False),
+        sql_enum(MiningOperationType, name="miningoperationtype"),
         nullable=False,
         default=MiningOperationType.OTHER,
     )