M18: implement operational workspaces

backend/app/models/data_quality.py

@@ -1,13 +1,17 @@
 import uuid
 from datetime import datetime
+from typing import TYPE_CHECKING
 
-from sqlalchemy import DateTime, String
+from sqlalchemy import DateTime, ForeignKey, String
 from sqlalchemy.dialects.postgresql import JSONB, UUID
-from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from app.core.db import Base
 from app.models.mixins import TimestampMixin, UUIDPrimaryKeyMixin
 
+if TYPE_CHECKING:
+    from app.models.user import User
+
 RULE_TYPES = (
     "possible_duplicate_customer",
     "missing_required_field",
@@ -31,5 +35,10 @@ class DataQualityIssue(UUIDPrimaryKeyMixin, TimestampMixin, Base):
     evidence_json: Mapped[dict] = mapped_column(JSONB, nullable=False, default=dict)
     proposed_action_json: Mapped[dict] = mapped_column(JSONB, nullable=False, default=dict)
     detected_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
+    due_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), index=True)
+    assigned_to_user_id: Mapped[uuid.UUID | None] = mapped_column(
+        UUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), index=True
+    )
+    assigned_to_user: Mapped["User | None"] = relationship(lazy="selectin")
     resolved_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
     resolved_by: Mapped[str | None] = mapped_column(String(120))