feat(appshell): topbar breadcrumb, notification bell, and help icon

Left side gains a desktop-only breadcrumb "Organisation / Page title"
using the current organisation from useAuthStore and a page title
resolved by:

  1. route.meta.title (if a page sets it explicitly), then
  2. matching the active route name against the navItems prop, then
  3. humanizing the route name as a last-resort fallback.

The chevron separator is suppressed when either side is empty, so
portal and pre-org users see just the page title. Mobile preserves
the existing hamburger + title text (the breadcrumb is hidden on
<lg to keep the topbar single-row).

Right side gains a notification bell and a help icon. The bell is a
visual placeholder (no badge) — clicking shows a PrimeVue Toast
"Notificaties komen binnenkort beschikbaar" until the notification
framework lands as a separate sprint.

The help icon would normally open https://docs.crewli.app in a new
tab, but the host currently serves with a TLS cert that does not
cover the name (ERR_TLS_CERT_ALTNAME_INVALID), so the click handler
falls back to a Toast. A TODO comment in the source records the
target URL and the one-line switch to make once the cert is fixed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/app/src/layouts/components/AppShell.vue

@@ -16,11 +16,13 @@
 // PrimeVue Drawer overlay. Content area renders the default slot
 // (a RouterView from the wrapping layout file).
 
-import { ref } from 'vue'
-import { useRouter } from 'vue-router'
+import { computed, ref } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
 import Drawer from 'primevue/drawer'
 import Button from 'primevue/button'
+import { useToast } from 'primevue/usetoast'
 import Icon from '@/components/Icon.vue'
+import { useAuthStore } from '@/stores/useAuthStore'
 
 interface NavHeading {
   heading: string
@@ -37,11 +39,14 @@ interface Props {
   title?: string
 }
 
-withDefaults(defineProps<Props>(), {
+const props = withDefaults(defineProps<Props>(), {
   title: 'Crewli',
 })
 
 const router = useRouter()
+const route = useRoute()
+const toast = useToast()
+const authStore = useAuthStore()
 
 const mobileNavOpen = ref(false)
 
@@ -53,6 +58,54 @@ function navigate(item: NavLink) {
   mobileNavOpen.value = false
   router.push(item.to)
 }
+
+// Breadcrumb: "Organisation / Page title". Page title resolves from
+// route.meta.title → matching navItems entry → humanized route name.
+// Org name is omitted on portal / pre-org users (currentOrganisation
+// is null) so the breadcrumb reads as just the page title there.
+const orgName = computed(() => authStore.currentOrganisation?.name ?? '')
+
+const pageTitle = computed(() => {
+  const metaTitle = route.meta.title
+  if (typeof metaTitle === 'string' && metaTitle.length > 0)
+    return metaTitle
+
+  const match = props.navItems.find(
+    (item): item is NavLink => 'to' in item && item.to.name === route.name,
+  )
+
+  if (match)
+    return match.title
+
+  const raw = String(route.name ?? '')
+  if (!raw)
+    return ''
+
+  return raw.charAt(0).toUpperCase() + raw.slice(1).replace(/-/g, ' ')
+})
+
+function onNotificationsClick() {
+  toast.add({
+    severity: 'info',
+    summary: 'Notificaties',
+    detail: 'Notificaties komen binnenkort beschikbaar.',
+    life: 3000,
+  })
+}
+
+// TODO(docs-url): https://docs.crewli.app currently serves with a TLS
+// cert that does not cover the host (ERR_TLS_CERT_ALTNAME_INVALID),
+// so a browser hit shows a security warning instead of the docs.
+// When the cert is fixed, switch this handler to:
+//   window.open('https://docs.crewli.app', '_blank', 'noopener,noreferrer')
+function onHelpClick() {
+  toast.add({
+    severity: 'info',
+    summary: 'Help',
+    detail: 'Documentatie komt binnenkort beschikbaar.',
+    life: 3000,
+  })
+}
 </script>
 
 <template>
@@ -149,6 +202,49 @@ function navigate(item: NavLink) {
             />
           </Button>
           <span class="text-base font-medium text-surface-700 lg:hidden">{{ title }}</span>
+          <nav
+            class="hidden items-center gap-2 text-sm lg:flex"
+            aria-label="Kruimelpad"
+          >
+            <span
+              v-if="orgName"
+              class="text-surface-500"
+            >{{ orgName }}</span>
+            <Icon
+              v-if="orgName && pageTitle"
+              name="tabler-chevron-right"
+              size="14"
+              class="text-surface-400"
+            />
+            <span class="font-medium text-surface-900">{{ pageTitle }}</span>
+          </nav>
+        </div>
+
+        <div class="flex items-center gap-1">
+          <Button
+            severity="secondary"
+            text
+            rounded
+            aria-label="Notificaties"
+            @click="onNotificationsClick"
+          >
+            <Icon
+              name="tabler-bell"
+              size="22"
+            />
+          </Button>
+          <Button
+            severity="secondary"
+            text
+            rounded
+            aria-label="Help"
+            @click="onHelpClick"
+          >
+            <Icon
+              name="tabler-help"
+              size="22"
+            />
+          </Button>
         </div>
       </header>