Overhaul of the frontend on waiters, orders, and payment events

Manager Dashboard: product reorder/bulk actions, preference sub-choices
UI, expanded reports with DateInput component, waiter management updates,
order detail improvements, Docker config and backend dockerignore added.

Backend: table groups, auto-numbering, has_active_order flag, expanded
reporting endpoints, waiter zone management, user schema updates, system
router additions, table router fixes.

Waiter PWA: TableDetailPage order/payment event improvements.

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

waiter_pwa/src/pages/TableDetailPage.jsx

@@ -44,10 +44,8 @@ export default function TableDetailPage() {
 
   const activeItems = order?.items?.filter(i => i.status === 'active') || []
   const allPaid = order && activeItems.length === 0
-
-  const isMyOrder = order && (
-    order.opened_by === user?.id || order.waiters?.some(w => w.waiter_id === user?.id)
-  )
+  // Any waiter whose zone covers this table can interact with orders on it
+  const canInteract = !!order
 
   async function openOrder() {
     try {
@@ -123,12 +121,12 @@ export default function TableDetailPage() {
         <div className="detail-body">
           <OrderSummary
             order={order}
-            selectable={isMyOrder && !paying}
+            selectable={canInteract && !paying}
             selectedIds={selectedIds}
             onToggle={toggleItem}
           />
 
-          {isMyOrder && activeItems.length > 0 && (
+          {canInteract && activeItems.length > 0 && (
             <div style={{ padding: '4px 12px 8px' }}>
               <button className="link-btn" onClick={selectAll} style={{ fontSize: 15 }}>
                 {allActiveSelected ? '☑ Αποεπιλογή όλων' : '☐ Επιλογή όλων'}
@@ -136,7 +134,7 @@ export default function TableDetailPage() {
             </div>
           )}
 
-          {isMyOrder && (
+          {canInteract && (
             <div className="action-bar">
               <button className="btn btn--accent" onClick={() => navigate(`/tables/${tableId}/add`)}>
                 + Προσθήκη
@@ -159,12 +157,6 @@ export default function TableDetailPage() {
               </button>
             </div>
           )}
-
-          {!isMyOrder && (
-            <p style={{ textAlign: 'center', color: '#64748b', padding: 16 }}>
-              Ανάγνωση μόνο — άλλος σερβιτόρος
-            </p>
-          )}
         </div>
       )}