refactor : merge Inventory_frontend submodule into frontend/ directory

Merges the full git history of Inventory_frontend into the monorepo
under frontend/. Removes the submodule in favor of a unified repo.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/app/pages/sites.vue

@@ -0,0 +1,119 @@
+<template>
+  <main class="container mx-auto px-6 py-8">
+    <DocumentPreviewModal
+      :document="previewDocument"
+      :visible="previewVisible"
+      :documents="siteDocuments"
+      @close="closePreview"
+    />
+
+    <div class="my-8">
+      <div class="flex justify-between items-center mb-6">
+        <h2 class="text-2xl font-bold">
+          Sites
+        </h2>
+        <button v-if="canEdit" class="btn btn-primary" @click="openCreateSiteModal">
+          <IconLucidePlus class="w-5 h-5 mr-2" aria-hidden="true" />
+          Ajouter un site
+        </button>
+      </div>
+
+      <div v-if="loading" class="flex justify-center items-center py-12">
+        <span class="loading loading-spinner loading-lg" />
+      </div>
+
+      <div v-else-if="sites.length === 0" class="text-center py-12">
+        <div class="max-w-md mx-auto">
+          <IconLucideMapPin class="w-16 h-16 mx-auto text-base-content/30 mb-4" aria-hidden="true" />
+          <h3 class="text-lg font-medium text-base-content mb-2">
+            Aucun site trouvé
+          </h3>
+          <p class="text-base-content/50 mb-4">
+            Commencez par ajouter votre premier site.
+          </p>
+          <button v-if="canEdit" class="btn btn-primary" @click="openCreateSiteModal">
+            Ajouter un site
+          </button>
+        </div>
+      </div>
+
+      <div v-else class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+        <SiteCard
+          v-for="site in sites"
+          :key="site.id"
+          :site="site"
+          @edit="editSite"
+          @delete="confirmDeleteSite"
+        />
+      </div>
+    </div>
+
+    <SiteCreateModal
+      :visible="showAddSiteModal"
+      :site="newSite"
+      :disabled="!canEdit"
+      @close="closeCreateModal"
+      @submit="handleCreateSite"
+    />
+
+    <SiteEditModal
+      :visible="showEditSiteModal"
+      :site-name="siteBeingEdited?.name || ''"
+      :form="editSiteForm"
+      :documents="siteDocuments"
+      :selected-files="selectedFiles"
+      :uploading-documents="uploadingDocuments"
+      :can-preview-document="canPreviewDocument"
+      :document-icon="documentIcon"
+      :format-size="formatSize"
+      :disabled="!canEdit"
+      @close="closeEditModal"
+      @submit="handleUpdateSite"
+      @remove-document="handleRemoveSiteDocument"
+      @download-document="downloadDocument"
+      @preview-document="openPreview"
+      @update:selected-files="(files) => (selectedFiles.value = files)"
+    />
+  </main>
+</template>
+
+<script setup>
+import IconLucideMapPin from '~icons/lucide/map-pin'
+import IconLucidePlus from '~icons/lucide/plus'
+import DocumentPreviewModal from '~/components/DocumentPreviewModal.vue'
+import SiteCard from '~/components/sites/SiteCard.vue'
+import SiteCreateModal from '~/components/sites/SiteCreateModal.vue'
+import SiteEditModal from '~/components/sites/SiteEditModal.vue'
+import { useSiteManagement } from '~/composables/useSiteManagement'
+
+const { canEdit } = usePermissions()
+
+const {
+  sites,
+  loading,
+  showAddSiteModal,
+  showEditSiteModal,
+  siteBeingEdited,
+  newSite,
+  editSiteForm,
+  selectedFiles,
+  uploadingDocuments,
+  previewDocument,
+  previewVisible,
+  siteDocuments,
+  documentIcon,
+  handleCreateSite,
+  editSite,
+  handleUpdateSite,
+  closeEditModal,
+  handleRemoveSiteDocument,
+  downloadDocument,
+  openPreview,
+  closePreview,
+  formatSize,
+  confirmDeleteSite,
+  canPreviewDocument,
+  openCreateSiteModal,
+  closeCreateModal
+} = useSiteManagement()
+</script>