updated quality for ore

trade-hub/backend/app/models.py

@@ -78,6 +78,10 @@ class InventoryEntry(Base):
             "visibility IN ('private', 'available')",
             name="ck_inventory_visibility",
         ),
+        CheckConstraint(
+            "quality IS NULL OR (quality >= 1 AND quality <= 1000)",
+            name="ck_inventory_quality_range",
+        ),
     )
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
@@ -87,6 +91,10 @@ class InventoryEntry(Base):
     class_name: Mapped[str] = mapped_column(String(255), nullable=False)
     quantity: Mapped[int] = mapped_column(Integer, nullable=False, default=1)
     notes: Mapped[str] = mapped_column(Text, nullable=False, default="")
+    # Mining/refining quality (1-1000) for commodities where it applies. NULL
+    # means "not specified"; non-quality commodities must keep this NULL. The
+    # applicability itself is catalog data, not stored here.
+    quality: Mapped[int | None] = mapped_column(Integer, nullable=True)
     # "private" (default): only the owner sees the row. "available": the owner
     # is offering the item. Unrelated to the response flag `available`, which
     # only reports whether the catalog still contains the referenced item.