GUI updates and misc fixes for the Cancel cutoff

app/models.py

@@ -82,6 +82,17 @@ class Order(Base):
     # for "fulfilled today" counts and as a rough audit trail. Set once,
     # on the transition; not touched again while it stays fulfilled.
     fulfilled_at = Column(DateTime, nullable=True)
+    # Same idea, for cancellation - also what limits the Cancelled tab to
+    # "cancelled today"; a ticket cancelled on a prior day falls through
+    # to Done instead of lingering on Cancelled indefinitely.
+    cancelled_at = Column(DateTime, nullable=True)
+    # When this ticket was successfully sent to ShipStation via the
+    # emergency "Send to ShipStation" action's API path specifically -
+    # confirmed by ShipStation's own response, not just attempted. The
+    # CSV export path intentionally does NOT set this: exporting a file
+    # isn't the same as it actually being imported, and this app has no
+    # way to confirm that manual step happened.
+    shipstation_sent_at = Column(DateTime, nullable=True)
 
     # Downstream pipeline flags - useful once Odoo export is fully wired up
     fulfilled = Column(Boolean, nullable=False, default=False)