Migración a shadcn-vue + Tailwind CSS v4

- Tailwind CSS v4 con @tailwindcss/vite
- shadcn-vue: 19 componentes UI (button, card, dialog, table, select,
  tabs, sidebar, separator, breadcrumb, badge, avatar, dropdown-menu,
  tooltip, input, switch, sheet, skeleton)
- Sidebar collapsible con íconos Lucide
- Theme Teloprax en CSS variables (rojo #E63946, negro #1A1A2E)
- LoginView, DashboardView, CalendarView, SchedulerView migrados
- Eliminado AppShell.vue manual (reemplazado por SidebarProvider)
- Layout con breadcrumb, sidebar trigger, header unificado

src/components/ui/sidebar/SidebarMenuButton.vue

@@ -0,0 +1,48 @@
+<script setup lang="ts">
+import type { Component } from 'vue'
+import type { SidebarMenuButtonProps } from './SidebarMenuButtonChild.vue'
+import { reactiveOmit } from '@vueuse/core'
+import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip'
+import SidebarMenuButtonChild from './SidebarMenuButtonChild.vue'
+import { useSidebar } from './utils'
+
+defineOptions({
+  inheritAttrs: false,
+})
+
+const props = withDefaults(defineProps<SidebarMenuButtonProps & {
+  tooltip?: string | Component
+}>(), {
+  as: 'button',
+  variant: 'default',
+  size: 'default',
+})
+
+const { isMobile, state } = useSidebar()
+
+const delegatedProps = reactiveOmit(props, 'tooltip')
+</script>
+
+<template>
+  <SidebarMenuButtonChild v-if="!tooltip" v-bind="{ ...delegatedProps, ...$attrs }">
+    <slot />
+  </SidebarMenuButtonChild>
+
+  <Tooltip v-else>
+    <TooltipTrigger as-child>
+      <SidebarMenuButtonChild v-bind="{ ...delegatedProps, ...$attrs }">
+        <slot />
+      </SidebarMenuButtonChild>
+    </TooltipTrigger>
+    <TooltipContent
+      side="right"
+      align="center"
+      :hidden="state !== 'collapsed' || isMobile"
+    >
+      <template v-if="typeof tooltip === 'string'">
+        {{ tooltip }}
+      </template>
+      <component :is="tooltip" v-else />
+    </TooltipContent>
+  </Tooltip>
+</template>