fix: report cancellation bugs + missing OrderItem model columns

Backend:
- OrderItem model: add cancelled_at, cancelled_by, cancel_reason columns
  (migration existed but model was missing them — caused 500 on cancellations_log)
- shifts.py _enrich_shift: count cancellations by quantity sum (not row count),
  add cancellation_value (sum of unit_price * quantity)
- reports.py current business day: add cancelled_items count (per-item quantity sum,
  across all orders in the day, not just fully-cancelled orders)

Manager dashboard:
- PrintFontsTab: fix SSE auth token key (access_token → manager_token, was causing 403)
- Today: show cancelled_items count as sub-label on Ακυρώσεις stat card
- OrderHistory: items/cancellations columns now use quantity sum, not row count
- WorkDaySummary drill-down: same quantity-sum fix
- ShiftsOverview: add Αξία Ακυρ. column next to Ακυρώσεις

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

local_backend/models/order.py

@@ -81,6 +81,11 @@ class OrderItem(Base):
     # Phase 2A — cost snapshot (copied from product at time of order, never updated)
     unit_cost = Column(Float, nullable=True)
 
+    # Phase 2B — cancellation tracking
+    cancelled_by = Column(Integer, ForeignKey("users.id"), nullable=True)
+    cancelled_at = Column(DateTime(timezone=True), nullable=True)
+    cancel_reason = Column(Text, nullable=True)
+
     order = relationship("Order", back_populates="items")
     product = relationship("Product", back_populates="order_items")
     added_by_user = relationship("User", foreign_keys=[added_by], back_populates="order_items")

local_backend/routers/reports.py

@@ -1260,6 +1260,16 @@ def current_business_day(
         p = db.query(Product).filter(Product.id == top_product_id).first()
         top_product = {"id": top_product_id, "name": p.name if p else f"#{top_product_id}", "qty": item_counts[top_product_id]}
 
+    # Count cancelled items (individual items cancelled, across all orders in this day)
+    all_order_ids = [o.id for o in orders]
+    cancelled_items_qty = 0
+    if all_order_ids:
+        from sqlalchemy import func as sqlfunc
+        cancelled_items_qty = db.query(sqlfunc.sum(OrderItem.quantity)).filter(
+            OrderItem.order_id.in_(all_order_ids),
+            OrderItem.status == "cancelled",
+        ).scalar() or 0
+
     return {
         "business_day": {
             "id": day.id,
@@ -1272,6 +1282,7 @@ def current_business_day(
             "orders_open": len(open_orders),
             "active_waiters": len(active_shifts),
             "cancellations": len(cancelled_orders),
+            "cancelled_items": int(cancelled_items_qty),
             "top_product": top_product,
         }
     }

local_backend/routers/shifts.py

@@ -75,7 +75,7 @@ def _enrich_shift(shift: WaiterShift, db: Session) -> dict:
     wname = (w.full_name or w.username) if w else f"#{shift.waiter_id}"
     total = compute_shift_total(shift.id, db) if shift.ended_at is None else (shift.total_collected or 0.0)
     pay_data = compute_shift_pay(shift)
-    # Count cancelled items attributed to this waiter during shift window
+    # Count cancelled items and their value attributed to this waiter during shift window
     cancelled_q = db.query(OrderItem).filter(
         OrderItem.status == "cancelled",
         OrderItem.added_by == shift.waiter_id,
@@ -83,7 +83,9 @@ def _enrich_shift(shift: WaiterShift, db: Session) -> dict:
     )
     if shift.ended_at:
         cancelled_q = cancelled_q.filter(OrderItem.added_at <= shift.ended_at)
-    cancellations = cancelled_q.count()
+    cancelled_rows = cancelled_q.all()
+    cancellations = sum(r.quantity for r in cancelled_rows)
+    cancellation_value = round(sum(r.unit_price * r.quantity for r in cancelled_rows), 2)
     return {
         "id": shift.id,
         "waiter_id": shift.waiter_id,
@@ -100,6 +102,7 @@ def _enrich_shift(shift: WaiterShift, db: Session) -> dict:
         "duration_hours": pay_data["duration_hours"],
         "shift_pay": pay_data["shift_pay"],
         "cancellations": cancellations,
+        "cancellation_value": cancellation_value,
         # Phase 2E
         "counted_cash_end": shift.counted_cash_end,
         "cash_discrepancy": shift.cash_discrepancy,

manager_dashboard/src/pages/Settings/tabs/PrintFontsTab.jsx

@@ -804,7 +804,7 @@ function FindPrintersModal({ onClose, onSelect }) {
     setError(null)
     setScanning(true)
 
-    const token = localStorage.getItem('access_token') || ''
+    const token = localStorage.getItem('manager_token') || ''
     const params = new URLSearchParams({ subnet, port })
     // Use fetch with ReadableStream to consume SSE (EventSource doesn't support auth headers)
     fetch(`/api/system/printers/scan?${params}`, {

manager_dashboard/src/pages/reports/restaurant/OrderHistory.jsx

@@ -95,8 +95,11 @@ export default function OrderHistory({ initialBusinessDayId } = {}) {
                 </THead>
                 <tbody>
                   {orders.slice(0, 200).map(o => {
-                    const activeItems = (o.items || []).filter(i => i.status !== 'cancelled')
-                    const cancelledItems = (o.items || []).filter(i => i.status === 'cancelled')
+                    const allItems = o.items || []
+                    const activeItems = allItems.filter(i => i.status !== 'cancelled')
+                    const cancelledItems = allItems.filter(i => i.status === 'cancelled')
+                    const totalQty = allItems.reduce((s, i) => s + (i.quantity || 1), 0)
+                    const cancelledQty = cancelledItems.reduce((s, i) => s + (i.quantity || 1), 0)
                     const total = activeItems.reduce((s, i) => s + i.unit_price * i.quantity, 0)
                     const isCancelled = o.status === 'cancelled'
                     return (
@@ -106,10 +109,10 @@ export default function OrderHistory({ initialBusinessDayId } = {}) {
                         <TD mono>{fmtDateTime(o.opened_at)}</TD>
                         <TD mono>{fmtDateTime(o.closed_at)}</TD>
                         <TD><StatusBadge status={o.status} /></TD>
-                        <TD mono align="right">{activeItems.length}</TD>
+                        <TD mono align="right">{totalQty}</TD>
                         <TD mono align="right">
-                          {cancelledItems.length > 0
-                            ? <span className="text-red-500 font-semibold">{cancelledItems.length}</span>
+                          {cancelledQty > 0
+                            ? <span className="text-red-500 font-semibold">{cancelledQty}</span>
                             : <span className="text-slate-300">—</span>}
                         </TD>
                         <TD mono align="right" className="font-semibold text-slate-900">{fmtEUR(total)}</TD>

manager_dashboard/src/pages/reports/restaurant/Today.jsx

@@ -119,7 +119,12 @@ export default function Today() {
             {bd.top_product && (
               <StatCard label="Κορυφαίο Προϊόν" value={bd.top_product.name} sub={`${bd.top_product.qty} τεμ.`} icon={Trophy} />
             )}
-            <StatCard label="Ακυρώσεις" value={fmtNum(bd.cancellations)} icon={XCircle} />
+            <StatCard
+              label="Ακυρώσεις"
+              value={fmtNum(bd.cancellations)}
+              sub={bd.cancelled_items > 0 ? `${fmtNum(bd.cancelled_items)} είδη` : 'παραγγελίες'}
+              icon={XCircle}
+            />
             {bd.total_cost > 0 && (
               <StatCard label="Κόστος Πωλήσεων" value={fmtEUR(bd.total_cost)} sub="κόστος ειδών" icon={ShoppingBag} />
             )}

manager_dashboard/src/pages/reports/restaurant/WorkDaySummary.jsx

@@ -75,8 +75,11 @@ function WorkDayModal({ day, onClose, onDeleteShift }) {
                 </THead>
                 <tbody>
                   {orders.map(o => {
-                    const activeItems = (o.items || []).filter(i => i.status !== 'cancelled')
-                    const cancelledItems = (o.items || []).filter(i => i.status === 'cancelled')
+                    const allItems = o.items || []
+                    const activeItems = allItems.filter(i => i.status !== 'cancelled')
+                    const cancelledItems = allItems.filter(i => i.status === 'cancelled')
+                    const totalQty = allItems.reduce((s, i) => s + (i.quantity || 1), 0)
+                    const cancelledQty = cancelledItems.reduce((s, i) => s + (i.quantity || 1), 0)
                     const total = activeItems.reduce((s, i) => s + i.unit_price * i.quantity, 0)
                     return (
                       <TR key={o.id} striped onClick={() => setDrillOrder(o)} className="cursor-pointer">
@@ -84,10 +87,10 @@ function WorkDayModal({ day, onClose, onDeleteShift }) {
                         <TD>{o.table_name ?? o.table_id}</TD>
                         <TD mono>{fmtDateTime(o.opened_at)}</TD>
                         <TD mono>{o.closed_at ? fmtDateTime(o.closed_at) : '—'}</TD>
-                        <TD mono align="right">{activeItems.length}</TD>
+                        <TD mono align="right">{totalQty}</TD>
                         <TD mono align="right">
-                          {cancelledItems.length > 0
-                            ? <span className="text-red-500 font-semibold">{cancelledItems.length}</span>
+                          {cancelledQty > 0
+                            ? <span className="text-red-500 font-semibold">{cancelledQty}</span>
                             : <span className="text-slate-300">—</span>}
                         </TD>
                         <TD mono align="right" className="font-semibold text-slate-900">{fmtEUR(total)}</TD>

manager_dashboard/src/pages/reports/staff/ShiftsOverview.jsx

@@ -126,6 +126,7 @@ export default function ShiftsOverview({ onNavigate } = {}) {
                 <TH align="right">Οφείλει</TH>
                 <TH align="right">Ταμείο</TH>
                 <TH align="right">Ακυρώσεις</TH>
+                <TH align="right">Αξία Ακυρ.</TH>
                 <TH>Κατάσταση</TH>
                 <TH className="w-28" />
               </THead>
@@ -183,6 +184,11 @@ export default function ShiftsOverview({ onNavigate } = {}) {
                           ? <span className="text-red-600 font-semibold">{s.cancellations}</span>
                           : <span className="text-slate-300">—</span>}
                       </TD>
+                      <TD mono align="right">
+                        {s.cancellation_value > 0
+                          ? <span className="text-red-500">{fmtEUR(s.cancellation_value)}</span>
+                          : <span className="text-slate-300">—</span>}
+                      </TD>
                       <TD><StatusBadge status={s.is_active ? 'active' : 'closed'} pulse /></TD>
                       <TD align="right">
                         <div className="flex items-center justify-end gap-2">
@@ -207,7 +213,7 @@ export default function ShiftsOverview({ onNavigate } = {}) {
                     </TR>,
                     isOpen && (
                       <tr key={`${s.id}-detail`}>
-                        <td colSpan={13} className="border-b border-slate-100 bg-slate-50/60 px-6 py-3">
+                        <td colSpan={14} className="border-b border-slate-100 bg-slate-50/60 px-6 py-3">
                           <div className="flex items-center gap-4 text-[12px] text-slate-500">
                             <span>
                               {'Εργάσιμη Μέρα: '}