fix(db): fill item_receipts.confirmed_by in office paths; resilient per-statement v2.6 upgrade (root cause of 500 on receipt)

backend/app/services/quote_service.py

@@ -535,6 +535,18 @@ async def _decision_for_line_item(db: AsyncSession, line_item_id: UUID) -> ItemD
     return decision
 
 
+async def _fallback_confirmer_id(db: AsyncSession) -> UUID:
+    """item_receipts.confirmed_by is NOT NULL — office (unauthenticated)
+    receipt paths reuse the dev-user row (same pattern as pm.py)."""
+    from app.models.procurement import User
+    dev = await db.scalar(select(User).where(User.casdoor_id == "dev"))
+    if dev is None:
+        dev = User(casdoor_id="dev", first_name="کاربر", last_name="آزمایشی", role="pm")
+        db.add(dev)
+        await db.flush()
+    return dev.id
+
+
 async def arrive_quote(db: AsyncSession, quote_id: UUID, actor: str | None = None) -> Quote:
     """Full-arrival shortcut: receipt for every non-rejected line item."""
     async with db.begin():
@@ -551,7 +563,13 @@ async def arrive_quote(db: AsyncSession, quote_id: UUID, actor: str | None = Non
                 continue
             existing = await db.scalar(select(ItemReceipt).where(ItemReceipt.item_decision_id == decision.id))
             if existing is None:
-                db.add(ItemReceipt(item_decision_id=decision.id, received_qty=li.quantity))
+                db.add(
+                    ItemReceipt(
+                        item_decision_id=decision.id,
+                        confirmed_by=await _fallback_confirmer_id(db),
+                        received_qty=li.quantity,
+                    )
+                )
 
         quote.status = "arrived"
         quote.arrived_date = utcnow()
@@ -587,6 +605,7 @@ async def arrive_items(db: AsyncSession, quote_id: UUID, payload: ArriveItemsIn,
                 db.add(
                     ItemReceipt(
                         item_decision_id=decision.id,
+                        confirmed_by=await _fallback_confirmer_id(db),
                         received_at=item.received_at or utcnow(),
                         received_qty=item.received_qty,
                         on_time=item.on_time,