Add super-admin Administration section and restructure global vs company settings

- Add Administration sidebar section (super-admin only) with Companies, Users, and Global Settings pages
- Add super-admin middleware, controllers, and API routes under /api/v1/super-admin/
- Allow super-admins to manage all companies and users across tenants
- Add user impersonation with short-lived tokens, audit logging, and UI banner
- Move system-level settings (Mail, PDF, Backup, Update, File Disk) from per-company to Administration > Global Settings
- Convert save_pdf_to_disk from CompanySetting to global Setting
- Add per-company mail configuration overrides (optional, falls back to global)
- Add CompanyMailConfigService to apply company mail config before sending emails

resources/scripts/admin/views/administration/settings/SettingsIndex.vue

@@ -0,0 +1,113 @@
+<template>
+  <BasePage>
+    <BasePageHeader :title="$t('administration.settings.title')" class="mb-6">
+      <BaseBreadcrumb>
+        <BaseBreadcrumbItem :title="$t('general.home')" to="/admin/dashboard" />
+        <BaseBreadcrumbItem
+          :title="$t('administration.settings.title')"
+          to="#"
+          active
+        />
+      </BaseBreadcrumb>
+    </BasePageHeader>
+
+    <div class="w-full mb-6 select-wrapper xl:hidden">
+      <BaseMultiselect
+        v-model="currentSetting"
+        :options="menuItems"
+        :can-deselect="false"
+        value-prop="title"
+        track-by="title"
+        label="title"
+        object
+        @update:modelValue="navigateToSetting"
+      />
+    </div>
+
+    <div class="flex">
+      <div class="hidden mt-1 xl:block min-w-[240px]">
+        <BaseList>
+          <BaseListItem
+            v-for="(menuItem, index) in menuItems"
+            :key="index"
+            :title="menuItem.title"
+            :to="menuItem.link"
+            :active="hasActiveUrl(menuItem.link)"
+            :index="index"
+            class="py-3"
+          >
+            <template #icon>
+              <BaseIcon :name="menuItem.icon" />
+            </template>
+          </BaseListItem>
+        </BaseList>
+      </div>
+
+      <div class="w-full overflow-hidden">
+        <RouterView />
+      </div>
+    </div>
+  </BasePage>
+</template>
+
+<script setup>
+import { ref, computed, watchEffect } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { useI18n } from 'vue-i18n'
+import BaseList from '@/scripts/components/list/BaseList.vue'
+import BaseListItem from '@/scripts/components/list/BaseListItem.vue'
+
+const { t } = useI18n()
+const route = useRoute()
+const router = useRouter()
+
+let currentSetting = ref({})
+
+const menuItems = computed(() => [
+  {
+    title: t('settings.mail.mail_config'),
+    link: '/admin/administration/settings/mail-configuration',
+    icon: 'EnvelopeIcon',
+  },
+  {
+    title: t('settings.menu_title.pdf_generation'),
+    link: '/admin/administration/settings/pdf-generation',
+    icon: 'DocumentIcon',
+  },
+  {
+    title: t('settings.menu_title.backup'),
+    link: '/admin/administration/settings/backup',
+    icon: 'CircleStackIcon',
+  },
+  {
+    title: t('settings.menu_title.update_app'),
+    link: '/admin/administration/settings/update-app',
+    icon: 'ArrowPathIcon',
+  },
+  {
+    title: t('settings.menu_title.file_disk'),
+    link: '/admin/administration/settings/file-disk',
+    icon: 'FolderIcon',
+  },
+])
+
+watchEffect(() => {
+  if (route.path === '/admin/administration/settings') {
+    router.push('/admin/administration/settings/mail-configuration')
+  }
+
+  const item = menuItems.value.find((item) => {
+    return route.path.indexOf(item.link) > -1
+  })
+
+  currentSetting.value = item
+})
+
+function hasActiveUrl(url) {
+  return route.path.indexOf(url) > -1
+}
+
+function navigateToSetting(setting) {
+  return router.push(setting.link)
+}
+</script>