fix(sync): sticky exclusion for DELETED_IN_ROA orders

Orders deleted via "Sterge" button were re-imported on the next sync
because classify step only checked Oracle (sters=0), not SQLite status.
Adds a filter step after cancellation handling that drops orders
already marked DELETED_IN_ROA before validation. "Reimporta" remains
the explicit override.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

api/app/services/sqlite_service.py

@@ -1253,6 +1253,19 @@ async def get_all_imported_orders() -> list:
         await db.close()
 
 
+async def get_deleted_in_roa_order_numbers() -> set[str]:
+    """Return set of order_numbers marked DELETED_IN_ROA (sticky-excluded from auto-sync)."""
+    db = await get_sqlite()
+    try:
+        cursor = await db.execute(
+            f"SELECT order_number FROM orders WHERE status = '{OrderStatus.DELETED_IN_ROA.value}'"
+        )
+        rows = await cursor.fetchall()
+        return {r[0] for r in rows}
+    finally:
+        await db.close()
+
+
 async def clear_order_invoice(order_number: str):
     """Clear cached invoice data when invoice was deleted in ROA."""
     db = await get_sqlite()