feat(sync): handle cancelled GoMag orders (status Anulata / statusId 7)

- Add web_status column to orders table (generic name for platform status)
- Filter cancelled orders during sync, record as CANCELLED in SQLite
- Soft-delete previously-imported cancelled orders in Oracle (if not invoiced)
- Add CANCELLED filter pill + badge in dashboard UI
- New soft_delete_order_in_roa() and mark_order_cancelled() functions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/services/import_service.py

@@ -294,3 +294,51 @@ def import_single_order(order, id_pol: int = None, id_sectie: int = None, app_se
                 pass
 
     return result
+
+
+def soft_delete_order_in_roa(id_comanda: int) -> dict:
+    """Soft-delete an order in Oracle ROA (set sters=1 on comenzi + comenzi_detalii).
+    Returns {"success": bool, "error": str|None, "details_deleted": int}
+    """
+    result = {"success": False, "error": None, "details_deleted": 0}
+
+    if database.pool is None:
+        result["error"] = "Oracle pool not initialized"
+        return result
+
+    conn = None
+    try:
+        conn = database.pool.acquire()
+        with conn.cursor() as cur:
+            # Soft-delete order details
+            cur.execute(
+                "UPDATE comenzi_detalii SET sters = 1 WHERE id_comanda = :1 AND sters = 0",
+                [id_comanda]
+            )
+            result["details_deleted"] = cur.rowcount
+
+            # Soft-delete the order itself
+            cur.execute(
+                "UPDATE comenzi SET sters = 1 WHERE id_comanda = :1 AND sters = 0",
+                [id_comanda]
+            )
+
+            conn.commit()
+            result["success"] = True
+            logger.info(f"Soft-deleted order ID={id_comanda} in Oracle ROA ({result['details_deleted']} details)")
+    except Exception as e:
+        result["error"] = str(e)
+        logger.error(f"Error soft-deleting order ID={id_comanda}: {e}")
+        if conn:
+            try:
+                conn.rollback()
+            except Exception:
+                pass
+    finally:
+        if conn:
+            try:
+                database.pool.release(conn)
+            except Exception:
+                pass
+
+    return result