feat(comments): add comment/ticket system across all entity pages

Add CommentSection component for inline comments on entity detail pages
(machines, pieces, composants, products, categories, skeleton types).
Add dedicated /comments page with filters, pagination and clickable links.
Add unresolved count badge on avatar and in profile dropdown.

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

app/components/layout/AppNavbar.vue

@@ -65,6 +65,9 @@
                     :class="childLinkClass(child)"
                   >
                     {{ child.label }}
+                    <span v-if="child.to === '/comments' && unresolvedCount > 0" class="badge badge-warning badge-xs ml-1">
+                      {{ unresolvedCount }}
+                    </span>
                   </NuxtLink>
                 </li>
               </ul>
@@ -142,6 +145,9 @@
                   :class="childLinkClass(child)"
                 >
                   {{ child.label }}
+                  <span v-if="child.to === '/comments' && unresolvedCount > 0" class="badge badge-warning badge-xs ml-1">
+                    {{ unresolvedCount }}
+                  </span>
                 </NuxtLink>
               </li>
             </ul>
@@ -166,8 +172,14 @@
             <div
               tabindex="0"
               role="button"
-              class="btn btn-ghost btn-circle avatar placeholder"
+              class="btn btn-ghost btn-circle avatar placeholder indicator"
             >
+              <span
+                v-if="unresolvedCount > 0"
+                class="indicator-item badge badge-warning badge-xs"
+              >
+                {{ unresolvedCount }}
+              </span>
               <div
                 class="bg-secondary text-secondary-content rounded-full w-10 h-10 grid place-items-center"
               >
@@ -193,6 +205,15 @@
                   <IconLucideChevronRight class="w-4 h-4" aria-hidden="true" />
                 </NuxtLink>
               </li>
+              <li>
+                <NuxtLink to="/comments" class="justify-between">
+                  Commentaires
+                  <span v-if="unresolvedCount > 0" class="badge badge-warning badge-xs">
+                    {{ unresolvedCount }}
+                  </span>
+                  <IconLucideChevronRight v-else class="w-4 h-4" aria-hidden="true" />
+                </NuxtLink>
+              </li>
               <li>
                 <button
                   type="button"
@@ -212,11 +233,12 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue'
+import { ref, computed, onMounted, onBeforeUnmount } from 'vue'
 import { useRoute } from '#imports'
 import { useNavDropdown } from '~/composables/useNavDropdown'
 import { usePermissions } from '~/composables/usePermissions'
 import { useProfileSession } from '~/composables/useProfileSession'
+import { useComments } from '~/composables/useComments'
 import IconLucideMenu from '~icons/lucide/menu'
 import IconLucideSettings from '~icons/lucide/settings'
 import IconLucideChevronRight from '~icons/lucide/chevron-right'
@@ -277,11 +299,12 @@ const navGroups: NavGroup[] = [
   {
     id: 'resources',
     label: 'Ressources liées',
-    activePaths: ['/sites', '/documents', '/constructeurs', '/activity-log'],
+    activePaths: ['/sites', '/documents', '/constructeurs', '/activity-log', '/comments'],
     children: [
       { to: '/sites', label: 'Sites' },
       { to: '/documents', label: 'Documents' },
       { to: '/constructeurs', label: 'Fournisseurs' },
+      { to: '/comments', label: 'Commentaires' },
       { to: '/activity-log', label: 'Journal d\'activité' },
     ],
   },
@@ -291,6 +314,24 @@ const route = useRoute()
 const { openDropdown, setDropdown, scheduleDropdownClose, toggleDropdown } = useNavDropdown()
 const { activeProfile } = useProfileSession()
 const { isAdmin, canEdit } = usePermissions()
+const { fetchUnresolvedCount } = useComments()
+
+const unresolvedCount = ref(0)
+let pollInterval: ReturnType<typeof setInterval> | null = null
+
+const refreshUnresolvedCount = async () => {
+  if (!activeProfile.value) return
+  unresolvedCount.value = await fetchUnresolvedCount()
+}
+
+onMounted(() => {
+  refreshUnresolvedCount()
+  pollInterval = setInterval(refreshUnresolvedCount, 60_000)
+})
+
+onBeforeUnmount(() => {
+  if (pollInterval) clearInterval(pollInterval)
+})
 
 const isActive = (path: string) => {
   if (path === '/') {