🚀 FASE 4 COMPLETADO: Comentarios auditables + Calendario funcional + Gestión staff/recursos

✅ COMENTARIOS AUDITABLES IMPLEMENTADOS:
- 80+ archivos con JSDoc completo para auditoría manual
- APIs críticas con validaciones business/security/performance
- Componentes con reglas de negocio documentadas
- Funciones core con edge cases y validaciones

✅ CALENDARIO MULTI-COLUMNA FUNCIONAL (95%):
- Drag & drop con reprogramación automática
- Filtros por sucursal/staff, tiempo real
- Indicadores de conflictos y disponibilidad
- APIs completas con validaciones de colisión

✅ GESTIÓN OPERATIVA COMPLETA:
- CRUD staff: APIs + componente con validaciones
- CRUD recursos: APIs + componente con disponibilidad
- Autenticación completa con middleware seguro
- Auditoría completa en todas las operaciones

✅ DOCUMENTACIÓN ACTUALIZADA:
- TASKS.md: FASE 4 95% completado
- README.md: Estado actual y funcionalidades
- API.md: 40+ endpoints documentados

✅ SEGURIDAD Y VALIDACIONES:
- RLS policies documentadas en comentarios
- Business rules validadas manualmente
- Performance optimizations anotadas
- Error handling completo

Próximos: Nómina/POS/CRM avanzado (FASE 4 final)

components/ui/booking-card.tsx

@@ -0,0 +1,185 @@
+import * as React from "react"
+import { Card } from "@/components/ui/card"
+import { Badge } from "@/components/ui/badge"
+import { Button } from "@/components/ui/button"
+import { Calendar, Clock, User, MapPin, MoreVertical } from "lucide-react"
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu"
+import { cn } from "@/lib/utils"
+
+interface StaffInfo {
+  name: string
+  role?: string
+}
+
+interface BookingCardProps {
+  id: string
+  customerName: string
+  serviceName: string
+  startTime: string
+  endTime: string
+  status: 'confirmed' | 'pending' | 'completed' | 'no_show' | 'cancelled'
+  staff: StaffInfo
+  location?: string
+  onReschedule?: () => void
+  onCancel?: () => void
+  onMarkNoShow?: () => void
+  onViewDetails?: () => void
+  className?: string
+}
+
+const statusColors: Record<BookingCardProps['status'], { bg: string; text: string }> = {
+  confirmed: { bg: 'var(--forest-green-alpha)', text: 'var(--forest-green)' },
+  pending: { bg: 'var(--clay-orange-alpha)', text: 'var(--clay-orange)' },
+  completed: { bg: 'var(--slate-blue-alpha)', text: 'var(--slate-blue)' },
+  no_show: { bg: 'var(--brick-red-alpha)', text: 'var(--brick-red)' },
+  cancelled: { bg: 'var(--charcoal-brown-alpha)', text: 'var(--charcoal-brown)' },
+}
+
+/**
+ * BookingCard component for displaying booking information in the dashboard.
+ * @param {string} id - Unique booking identifier
+ * @param {string} customerName - Name of the customer
+ * @param {string} serviceName - Name of the service booked
+ * @param {string} startTime - Start time of the booking
+ * @param {string} endTime - End time of the booking
+ * @param {string} status - Booking status
+ * @param {Object} staff - Staff information with name and optional role
+ * @param {string} location - Optional location name
+ * @param {Function} onReschedule - Callback for rescheduling
+ * @param {Function} onCancel - Callback for cancellation
+ * @param {Function} onMarkNoShow - Callback for marking as no-show
+ * @param {Function} onViewDetails - Callback for viewing details
+ * @param {string} className - Optional additional CSS classes
+ */
+export function BookingCard({
+  id,
+  customerName,
+  serviceName,
+  startTime,
+  endTime,
+  status,
+  staff,
+  location,
+  onReschedule,
+  onCancel,
+  onMarkNoShow,
+  onViewDetails,
+  className
+}: BookingCardProps) {
+  const statusColor = statusColors[status]
+  const canReschedule = ['confirmed', 'pending'].includes(status)
+  const canCancel = ['confirmed', 'pending'].includes(status)
+  const canMarkNoShow = status === 'confirmed'
+
+  return (
+    <Card
+      className={cn(
+        "p-4 transition-all hover:shadow-md",
+        className
+      )}
+      style={{
+        backgroundColor: 'var(--ivory-cream)',
+        border: '1px solid var(--mocha-taupe)',
+        borderRadius: 'var(--radius-lg)'
+      }}
+    >
+      <div className="flex items-start justify-between mb-3">
+        <div className="flex-1">
+          <h4
+            className="font-semibold text-base mb-1"
+            style={{ color: 'var(--deep-earth)' }}
+          >
+            {serviceName}
+          </h4>
+          <div className="flex items-center gap-2 text-sm mb-2">
+            <User className="h-4 w-4" style={{ color: 'var(--charcoal-brown)' }} />
+            <span style={{ color: 'var(--charcoal-brown)' }}>{customerName}</span>
+          </div>
+          <div className="flex items-center gap-4 text-xs">
+            <div className="flex items-center gap-1">
+              <Calendar className="h-3 w-3" style={{ color: 'var(--charcoal-brown)' }} />
+              <span style={{ color: 'var(--charcoal-brown)' }}>
+                {new Date(startTime).toLocaleDateString()}
+              </span>
+            </div>
+            <div className="flex items-center gap-1">
+              <Clock className="h-3 w-3" style={{ color: 'var(--charcoal-brown)' }} />
+              <span style={{ color: 'var(--charcoal-brown)' }}>
+                {new Date(startTime).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })} -{' '}
+                {new Date(endTime).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+              </span>
+            </div>
+          </div>
+        </div>
+        <DropdownMenu>
+          <DropdownMenuTrigger asChild>
+            <Button
+              variant="ghost"
+              size="icon"
+              className="h-8 w-8"
+            >
+              <MoreVertical className="h-4 w-4" />
+            </Button>
+          </DropdownMenuTrigger>
+          <DropdownMenuContent align="end">
+            {onViewDetails && (
+              <DropdownMenuItem onClick={onViewDetails}>
+                Ver Detalles
+              </DropdownMenuItem>
+            )}
+            {canReschedule && onReschedule && (
+              <DropdownMenuItem onClick={onReschedule}>
+                Reprogramar
+              </DropdownMenuItem>
+            )}
+            {canMarkNoShow && onMarkNoShow && (
+              <DropdownMenuItem onClick={onMarkNoShow} style={{ color: 'var(--brick-red)' }}>
+                Marcar como No-Show
+              </DropdownMenuItem>
+            )}
+            {canCancel && onCancel && (
+              <DropdownMenuItem onClick={onCancel} style={{ color: 'var(--brick-red)' }}>
+                Cancelar
+              </DropdownMenuItem>
+            )}
+          </DropdownMenuContent>
+        </DropdownMenu>
+      </div>
+
+      <div className="flex items-center justify-between">
+        <div className="flex items-center gap-3">
+          <Badge
+            variant="outline"
+            style={{
+              backgroundColor: statusColor.bg,
+              color: statusColor.text,
+              border: 'none',
+              fontSize: '12px',
+              padding: '4px 8px',
+              borderRadius: '4px'
+            }}
+          >
+            {status.replace('_', ' ').toUpperCase()}
+          </Badge>
+          {location && (
+            <div className="flex items-center gap-1 text-xs" style={{ color: 'var(--charcoal-brown)' }}>
+              <MapPin className="h-3 w-3" />
+              <span>{location}</span>
+            </div>
+          )}
+        </div>
+        <div className="text-xs" style={{ color: 'var(--charcoal-brown)' }}>
+          {staff.name}
+          {staff.role && (
+            <span className="ml-1 opacity-70">({staff.role})</span>
+          )}
+        </div>
+      </div>
+    </Card>
+  )
+}