feat: highlight source element when navigating from tables to edit page

Clicking the pencil icon in revenus/depenses tables now passes query
params to identify the source row. The edit page auto-expands the
matching section, scrolls to the element, and briefly highlights it
with a blue ring that fades after 2 seconds.

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

frontend/src/pages/EditDocumentPage.vue

@@ -77,11 +77,12 @@
       <!-- Droite : Édition ou Tagging -->
       <div class="w-1/2 flex flex-col bg-gray-50">
         <!-- Vue 1 : JsonViewer (mode édition) -->
-        <JsonViewer 
+        <JsonViewer
           v-if="!showTagging && extractedData"
           :data="extractedData"
           @update:data="extractedData = $event"
           :is-loading="false"
+          :highlight="highlightInfo"
           class="flex-1"
         />
 
@@ -110,7 +111,7 @@
 </template>
 
 <script setup>
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import PdfPreview from '../components/PdfPreview.vue'
 import JsonViewer from '../components/JsonViewer.vue'
@@ -127,6 +128,13 @@ const showTagging = ref(false)
 const isSaving = ref(false)
 const saveError = ref(null)
 
+const highlightInfo = computed(() => {
+  const q = route.query
+  if (q.highlight === 'locataire') return { type: 'locataire', lot_numero: q.lot_numero, locataire_nom: q.locataire_nom }
+  if (q.highlight === 'operation') return { type: 'operation', fournisseur: q.fournisseur, description: q.description }
+  return null
+})
+
 onMounted(async () => {
   await loadDocument()
 })