feat: complete Epic 0 — foundation migration & infrastructure setup

Stories 0.2-0.5: rename folders→declarations (backend+frontend), configure
Redis for cache/queue/sessions, add foundation database migrations
(permissions, archived_at), replace DeclarationStatus enum with architecture
lifecycle values, create DeclarationObserver for status transition validation
and auto-archive, fix controller status transitions to respect observer rules.

93 tests pass (240 assertions).

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

resources/js/components/clients/DeclarationCalendar.vue

@@ -1,42 +1,53 @@
 <script setup lang="ts">
+import { ChevronLeft, ChevronRight } from 'lucide-vue-next';
 import { computed, ref } from 'vue';
 import { Button } from '@/components/ui/button';
-import { ChevronLeft, ChevronRight } from 'lucide-vue-next';
 
-type Folder = {
+type Declaration = {
     id: number;
     due_date: string | null;
 };
 
 type Props = {
-    folders: Folder[];
+    declarations: Declaration[];
 };
 
 const props = defineProps<Props>();
 
 const monthNames = [
-    'Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin',
-    'Juillet', 'Août', 'Septembre', 'Octobre', 'Novembre', 'Décembre',
+    'Janvier',
+    'Février',
+    'Mars',
+    'Avril',
+    'Mai',
+    'Juin',
+    'Juillet',
+    'Août',
+    'Septembre',
+    'Octobre',
+    'Novembre',
+    'Décembre',
 ];
 const dayNames = ['Lun', 'Mar', 'Mer', 'Jeu', 'Ven', 'Sam', 'Dim'];
 
 const current = ref(new Date());
 
-const monthLabel = computed(() =>
-    `${monthNames[current.value.getMonth()]} ${current.value.getFullYear()}`,
+const monthLabel = computed(
+    () =>
+        `${monthNames[current.value.getMonth()]} ${current.value.getFullYear()}`,
 );
 
-const datesWithFolders = computed(() => {
+const datesWithDeclarations = computed(() => {
     const set = new Set<string>();
-    props.folders.forEach((f) => {
+    props.declarations.forEach((f) => {
         if (f.due_date) set.add(f.due_date);
     });
     return set;
 });
 
-const foldersByDate = computed(() => {
+const declarationsByDate = computed(() => {
     const map = new Map<string, number>();
-    props.folders.forEach((f) => {
+    props.declarations.forEach((f) => {
         if (f.due_date) {
             map.set(f.due_date, (map.get(f.due_date) ?? 0) + 1);
         }
@@ -52,7 +63,11 @@ const calendarDays = computed(() => {
     const startDay = (first.getDay() + 6) % 7;
     const daysInMonth = last.getDate();
 
-    const days: Array<{ date: Date | null; dateStr: string | null; count: number }> = [];
+    const days: Array<{
+        date: Date | null;
+        dateStr: string | null;
+        count: number;
+    }> = [];
 
     for (let i = 0; i < startDay; i++) {
         days.push({ date: null, dateStr: null, count: 0 });
@@ -63,18 +78,24 @@ const calendarDays = computed(() => {
         days.push({
             date,
             dateStr,
-            count: foldersByDate.value.get(dateStr) ?? 0,
+            count: declarationsByDate.value.get(dateStr) ?? 0,
         });
     }
     return days;
 });
 
 function prevMonth() {
-    current.value = new Date(current.value.getFullYear(), current.value.getMonth() - 1);
+    current.value = new Date(
+        current.value.getFullYear(),
+        current.value.getMonth() - 1,
+    );
 }
 
 function nextMonth() {
-    current.value = new Date(current.value.getFullYear(), current.value.getMonth() + 1);
+    current.value = new Date(
+        current.value.getFullYear(),
+        current.value.getMonth() + 1,
+    );
 }
 </script>
 
@@ -111,11 +132,8 @@ function nextMonth() {
             >
                 <template v-if="cell.date">
                     {{ cell.date.getDate() }}
-                    <span
-                        v-if="cell.count > 0"
-                        class="mt-0.5 text-[10px]"
-                    >
-                        {{ cell.count }} dossier{{ cell.count > 1 ? 's' : '' }}
+                    <span v-if="cell.count > 0" class="mt-0.5 text-[10px]">
+                        {{ cell.count }} décl.
                     </span>
                 </template>
             </div>