diff --git a/apps/app/src/layouts/components/AppShell.vue b/apps/app/src/layouts/components/AppShell.vue
index 9761e1d2..d1224e95 100644
--- a/apps/app/src/layouts/components/AppShell.vue
+++ b/apps/app/src/layouts/components/AppShell.vue
@@ -17,12 +17,13 @@
 // (a RouterView from the wrapping layout file).
 
 import { computed, ref } from 'vue'
-import { useRouter } from 'vue-router'
+import { useRoute, useRouter } from 'vue-router'
 import Drawer from 'primevue/drawer'
 import Button from 'primevue/button'
-import Avatar from 'primevue/avatar'
-import Menu from 'primevue/menu'
+import { useToast } from 'primevue/usetoast'
 import Icon from '@/components/Icon.vue'
+import SidebarHeader from '@/layouts/components/SidebarHeader.vue'
+import SidebarUserCard from '@/layouts/components/SidebarUserCard.vue'
 import { useAuthStore } from '@/stores/useAuthStore'
 
 interface NavHeading {
@@ -40,42 +41,23 @@ 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)
-const userMenuRef = ref<InstanceType<typeof Menu> | null>(null)
 
-const userInitial = computed(() => {
-  const name = authStore.user?.full_name ?? ''
-
-  return name.charAt(0).toUpperCase() || '?'
-})
-
-const userMenuItems = computed(() => [
-  {
-    label: authStore.user?.full_name ?? 'Gebruiker',
-    items: [
-      {
-        label: 'Mijn Profiel',
-        icon: 'tabler-user',
-        command: () => router.push({ name: 'account-settings' }),
-      },
-      {
-        label: 'Uitloggen',
-        icon: 'tabler-logout',
-        command: async () => {
-          await authStore.logout()
-          await router.push('/login')
-        },
-      },
-    ],
-  },
-])
+// Tailwind's lg breakpoint, mirrored in script so Vue can own the
+// visibility of PrimeVue elements that would otherwise lose a CSS
+// specificity duel to .p-button / .p-drawer / etc. See the wrapper
+// `<div class="lg:hidden">` around the topbar mobile cluster and the
+// `v-if="!isLg"` on the Drawer.
+const isLg = useMediaQuery('(min-width: 1024px)')
 
 function isHeading(item: NavItem): item is NavHeading {
   return 'heading' in item
@@ -86,26 +68,68 @@ function navigate(item: NavLink) {
   router.push(item.to)
 }
 
-function toggleUserMenu(event: Event) {
-  userMenuRef.value?.toggle(event)
+// 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>
   <div class="crewli-app-shell flex min-h-screen">
     <!-- Desktop sidebar (lg+) -->
-    <aside class="hidden lg:flex w-64 flex-col border-r border-surface-200 bg-surface-0">
-      <div class="flex h-16 items-center justify-center border-b border-surface-200">
-        <span class="text-xl font-semibold text-primary-500">{{ title }}</span>
-      </div>
-      <nav class="flex-1 overflow-y-auto p-3">
+    <aside class="hidden lg:flex w-72 flex-col border-r border-surface-200 bg-surface-0">
+      <SidebarHeader :title="title" />
+      <nav class="min-h-0 flex-1 overflow-y-auto p-3">
         <template
           v-for="(item, idx) in navItems"
           :key="idx"
         >
           <div
             v-if="isHeading(item)"
-            class="mt-4 mb-2 px-2 text-xs font-semibold uppercase tracking-wider text-surface-500"
+            class="mt-6 mb-1 px-3 text-[11px] font-medium uppercase tracking-widest text-surface-400"
           >
             {{ item.heading }}
           </div>
@@ -123,26 +147,36 @@ function toggleUserMenu(event: Event) {
           </button>
         </template>
       </nav>
+      <SidebarUserCard />
     </aside>
 
-    <!-- Mobile drawer (overlay, <lg) -->
+    <!--
+      Mobile drawer (overlay, <lg). v-if (not lg:hidden class) because
+      PrimeVue Drawer teleports to body, so a wrapping div or class
+      on the Drawer root can't beat .p-drawer's display rule in the
+      cascade — Vue must simply not render the component on lg+.
+    -->
     <Drawer
+      v-if="!isLg"
       v-model:visible="mobileNavOpen"
       position="left"
-      class="lg:hidden"
-      :pt="{ root: { style: { width: '16rem' } } }"
+      :pt="{
+        root: { style: { width: '18rem' } },
+        header: { class: 'p-0' },
+        content: { class: 'flex flex-col flex-1 min-h-0 p-0' },
+      }"
     >
       <template #header>
-        <span class="text-lg font-semibold text-primary-500">{{ title }}</span>
+        <SidebarHeader :title="title" />
       </template>
-      <nav class="flex flex-col">
+      <nav class="min-h-0 flex-1 overflow-y-auto p-3">
         <template
           v-for="(item, idx) in navItems"
           :key="idx"
         >
           <div
             v-if="isHeading(item)"
-            class="mt-4 mb-2 px-2 text-xs font-semibold uppercase tracking-wider text-surface-500"
+            class="mt-6 mb-1 px-3 text-[11px] font-medium uppercase tracking-widest text-surface-400"
           >
             {{ item.heading }}
           </div>
@@ -160,6 +194,7 @@ function toggleUserMenu(event: Event) {
           </button>
         </template>
       </nav>
+      <SidebarUserCard />
     </Drawer>
 
     <!-- Main column -->
@@ -167,41 +202,70 @@ function toggleUserMenu(event: Event) {
       <!-- Top bar -->
       <header class="flex h-16 items-center justify-between border-b border-surface-200 bg-surface-0 px-4">
         <div class="flex items-center gap-2">
-          <Button
-            class="lg:hidden"
-            severity="secondary"
-            text
-            rounded
-            aria-label="Menu openen"
-            @click="mobileNavOpen = true"
+          <!--
+            Mobile cluster: visibility owned by this plain DIV. The
+            PrimeVue Button alone with lg:hidden loses to
+            .p-button { display: inline-flex } in the cascade — same
+            specificity, PrimeVue's stylesheet loads later.
+          -->
+          <div class="flex items-center gap-2 lg:hidden">
+            <Button
+              severity="secondary"
+              text
+              rounded
+              aria-label="Menu openen"
+              @click="mobileNavOpen = true"
+            >
+              <Icon
+                name="tabler-menu-2"
+                size="24"
+              />
+            </Button>
+            <span class="text-base font-medium text-surface-700">{{ title }}</span>
+          </div>
+          <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
-              name="tabler-menu-2"
-              size="24"
+              v-if="orgName && pageTitle"
+              name="tabler-chevron-right"
+              size="14"
+              class="text-surface-400"
             />
-          </Button>
-          <span class="text-base font-medium text-surface-700 lg:hidden">{{ title }}</span>
+            <span class="font-medium text-surface-900">{{ pageTitle }}</span>
+          </nav>
         </div>
 
-        <div class="flex items-center gap-2">
+        <div class="flex items-center gap-1">
           <Button
             severity="secondary"
             text
             rounded
-            aria-label="Gebruikersmenu openen"
-            @click="toggleUserMenu"
+            aria-label="Notificaties"
+            @click="onNotificationsClick"
           >
-            <Avatar
-              :label="userInitial"
-              shape="circle"
-              class="bg-primary-500 text-white"
+            <Icon
+              name="tabler-bell"
+              size="22"
+            />
+          </Button>
+          <Button
+            severity="secondary"
+            text
+            rounded
+            aria-label="Help"
+            @click="onHelpClick"
+          >
+            <Icon
+              name="tabler-help"
+              size="22"
             />
           </Button>
-          <Menu
-            ref="userMenuRef"
-            :model="userMenuItems"
-            :popup="true"
-          />
         </div>
       </header>
 
diff --git a/apps/app/src/layouts/components/SidebarHeader.vue b/apps/app/src/layouts/components/SidebarHeader.vue
new file mode 100644
index 00000000..37cb3361
--- /dev/null
+++ b/apps/app/src/layouts/components/SidebarHeader.vue
@@ -0,0 +1,104 @@
+<script setup lang="ts">
+// SidebarHeader — top-of-sidebar org-switcher card introduced in F3.5
+// per the AppShell mockup-parity sprint. PrimeVue-only rewrite of the
+// legacy Vuetify OrganisationSwitcher (apps/app/src/components/layout/
+// OrganisationSwitcher.vue), which cannot be reused inside AppShell
+// per the R-10 layout-shell-isolation invariant.
+//
+// When the auth store has no active organisation (e.g. portal users,
+// or a fresh super_admin without an org), the component degrades to a
+// plain title block — the same visual the F3 AppShell shipped with.
+
+import { computed, ref } from 'vue'
+import Menu from 'primevue/menu'
+import Avatar from 'primevue/avatar'
+import Icon from '@/components/Icon.vue'
+import { useAuthStore } from '@/stores/useAuthStore'
+
+interface Props {
+  title?: string
+}
+
+withDefaults(defineProps<Props>(), {
+  title: 'Crewli',
+})
+
+const authStore = useAuthStore()
+const menuRef = ref<InstanceType<typeof Menu> | null>(null)
+
+const currentOrg = computed(() => authStore.currentOrganisation)
+const organisations = computed(() => authStore.organisations)
+const hasSwitcher = computed(() => !!currentOrg.value)
+const hasMultiple = computed(() => organisations.value.length > 1)
+
+const orgInitials = computed(() => {
+  const name = currentOrg.value?.name ?? ''
+  const parts = name.split(/\s+/).filter(Boolean).slice(0, 2)
+  const initials = parts.map(w => w[0]?.toUpperCase() ?? '').join('')
+
+  return initials || '?'
+})
+
+// Plan tier placeholder. Backend `Organisation` resource does not yet
+// expose a plan field (see types/auth.ts:17-27); 'Pro' is hardcoded
+// per Bert's A6.1 decision until that field lands.
+const planLabel = 'Pro'
+
+const menuItems = computed(() =>
+  organisations.value.map(org => ({
+    label: org.name,
+    command: () => authStore.setActiveOrganisation(org.id),
+  })),
+)
+
+function toggleMenu(event: Event) {
+  if (!hasMultiple.value)
+    return
+  menuRef.value?.toggle(event)
+}
+</script>
+
+<template>
+  <div class="border-b border-surface-200">
+    <button
+      v-if="hasSwitcher"
+      type="button"
+      class="flex w-full items-center gap-3 px-3 py-3 text-left transition enabled:hover:bg-surface-100 disabled:cursor-default"
+      :disabled="!hasMultiple"
+      :aria-label="hasMultiple ? 'Organisatie wisselen' : currentOrg?.name"
+      :aria-haspopup="hasMultiple ? 'menu' : undefined"
+      @click="toggleMenu"
+    >
+      <Avatar
+        :label="orgInitials"
+        shape="circle"
+        class="shrink-0 bg-primary-500 text-white"
+      />
+      <div class="flex min-w-0 flex-1 flex-col">
+        <span class="truncate text-sm font-semibold text-surface-900">
+          {{ currentOrg?.name }}
+        </span>
+        <span class="text-xs text-surface-500">{{ planLabel }}</span>
+      </div>
+      <Icon
+        v-if="hasMultiple"
+        name="tabler-chevron-down"
+        size="18"
+        class="shrink-0 text-surface-500"
+      />
+    </button>
+
+    <div
+      v-else
+      class="flex h-16 items-center justify-center px-3"
+    >
+      <span class="text-xl font-semibold text-primary-500">{{ title }}</span>
+    </div>
+
+    <Menu
+      ref="menuRef"
+      :model="menuItems"
+      :popup="true"
+    />
+  </div>
+</template>
diff --git a/apps/app/src/layouts/components/SidebarUserCard.vue b/apps/app/src/layouts/components/SidebarUserCard.vue
new file mode 100644
index 00000000..edbc86f7
--- /dev/null
+++ b/apps/app/src/layouts/components/SidebarUserCard.vue
@@ -0,0 +1,113 @@
+<script setup lang="ts">
+// SidebarUserCard — bottom-of-sidebar user identity + menu, introduced
+// in F3.5 per Bert's A6.5 decision. Consolidates the user menu in a
+// single location (sidebar bottom) and removes the topbar avatar
+// dropdown, eliminating two paths to the same Logout / Profile actions.
+//
+// The PrimeVue Menu in popup mode auto-flips above the trigger when
+// the panel would overflow the viewport bottom (per PrimeVue v4's
+// DomHandler.absolutePosition logic). The card sits flush against the
+// bottom of the sidebar, so the dropdown reliably opens upward.
+
+import { computed, ref } from 'vue'
+import { useRouter } from 'vue-router'
+import Menu from 'primevue/menu'
+import Avatar from 'primevue/avatar'
+import Icon from '@/components/Icon.vue'
+import { useAuthStore } from '@/stores/useAuthStore'
+
+const router = useRouter()
+const authStore = useAuthStore()
+
+const menuRef = ref<InstanceType<typeof Menu> | null>(null)
+
+const userInitial = computed(() => {
+  const name = authStore.user?.full_name ?? ''
+
+  return name.charAt(0).toUpperCase() || '?'
+})
+
+const userName = computed(() => authStore.user?.full_name ?? 'Gebruiker')
+
+const roleLabels: Record<string, string> = {
+  super_admin: 'Super Admin',
+  org_admin: 'Beheerder',
+  org_member: 'Lid',
+  event_manager: 'Eventmanager',
+  staff_coordinator: 'Staf coördinator',
+  volunteer_coordinator: 'Vrijwilligers coördinator',
+}
+
+const roleLabel = computed(() => {
+  const orgRole = authStore.currentOrganisation?.role
+  if (orgRole)
+    return roleLabels[orgRole] ?? orgRole
+  if (authStore.isSuperAdmin)
+    return 'Super Admin'
+
+  return ''
+})
+
+const menuItems = computed(() => [
+  {
+    label: userName.value,
+    items: [
+      {
+        label: 'Mijn Profiel',
+        icon: 'tabler-user',
+        command: () => router.push({ name: 'account-settings' }),
+      },
+      {
+        label: 'Uitloggen',
+        icon: 'tabler-logout',
+        command: async () => {
+          await authStore.logout()
+          await router.push('/login')
+        },
+      },
+    ],
+  },
+])
+
+function toggleMenu(event: Event) {
+  menuRef.value?.toggle(event)
+}
+</script>
+
+<template>
+  <div class="border-t border-surface-200">
+    <button
+      type="button"
+      class="flex w-full items-center gap-3 px-3 py-3 text-left transition hover:bg-surface-100"
+      aria-label="Gebruikersmenu openen"
+      aria-haspopup="menu"
+      @click="toggleMenu"
+    >
+      <Avatar
+        :label="userInitial"
+        shape="circle"
+        class="shrink-0 bg-primary-500 text-white"
+      />
+      <div class="flex min-w-0 flex-1 flex-col">
+        <span class="truncate text-sm font-semibold text-surface-900">
+          {{ userName }}
+        </span>
+        <span
+          v-if="roleLabel"
+          class="truncate text-xs text-surface-500"
+        >{{ roleLabel }}</span>
+      </div>
+      <Icon
+        name="tabler-chevron-up"
+        size="18"
+        class="shrink-0 text-surface-500"
+      />
+    </button>
+
+    <Menu
+      ref="menuRef"
+      :model="menuItems"
+      :popup="true"
+    />
+  </div>
+</template>
diff --git a/apps/app/src/main.ts b/apps/app/src/main.ts
index 04ebec50..85ae2154 100644
--- a/apps/app/src/main.ts
+++ b/apps/app/src/main.ts
@@ -1,3 +1,9 @@
+// Iconify-Tabler runtime data — side-effect import must run before any
+// component renders an Icon, so the @iconify/vue runtime resolves
+// names locally instead of falling back to the api.iconify.design CDN
+// (blocked by our CSP). See plugins/iconify.ts for the bootstrap.
+import '@/plugins/iconify'
+
 import { createApp } from 'vue'
 import { VueQueryPlugin } from '@tanstack/vue-query'
 import { queryClientConfig } from '@/lib/query-client'
@@ -6,7 +12,7 @@ import { router } from '@/plugins/1.router'
 
 import App from '@/App.vue'
 import { registerPlugins } from '@core/utils/plugins'
-import installPrimeVue from '@/plugins/primevue'
+import { installPrimeVue } from '@/plugins/primevue'
 
 // Styles
 import '@styles/tailwind.css'
diff --git a/apps/app/src/plugins/iconify.ts b/apps/app/src/plugins/iconify.ts
new file mode 100644
index 00000000..f9417dec
--- /dev/null
+++ b/apps/app/src/plugins/iconify.ts
@@ -0,0 +1,24 @@
+// Iconify-Tabler runtime bootstrap — introduced in F3.5 to make
+// @iconify/vue's <Icon> render real SVG paths from local data instead
+// of fetching individual icons from https://api.iconify.design/ at
+// runtime. The CSP blocks that origin, so the previous behaviour was
+// an empty <svg viewBox="0 0 16 16"></svg> for every Tabler icon used
+// in the PrimeVue side of the parallel-mode app.
+//
+// This file is a separate concern from src/plugins/iconify/index.ts +
+// icons.css, which exists to serve the Vuetify side: Vuexy's @core
+// `<VIcon icon="tabler-X" />` adapter renders via the i-tabler-* CSS
+// classes those files inject, and Vuetify never touches the @iconify
+// /vue runtime. The two systems must coexist until F6 retires
+// Vuetify, after which the legacy plugins/iconify/ directory can be
+// deleted alongside it.
+//
+// Imported as a side effect at the top of main.ts, so addCollection
+// runs before any component renders an Icon. The whole Tabler set
+// (~1.9 MB uncompressed JSON / ~400 KB gzipped) is loaded eagerly;
+// per-icon imports are a future optimisation, not in F3.5 scope.
+
+import { addCollection } from '@iconify/vue'
+import tablerIcons from '@iconify-json/tabler/icons.json'
+
+addCollection(tablerIcons)
diff --git a/apps/app/src/plugins/primevue/index.ts b/apps/app/src/plugins/primevue/index.ts
index 83f00a39..6d3ead79 100644
--- a/apps/app/src/plugins/primevue/index.ts
+++ b/apps/app/src/plugins/primevue/index.ts
@@ -6,6 +6,16 @@
 // Per RFC-WS-FRONTEND-PRIMEVUE AD-2: darkModeSelector matches Vuexy's
 // `.dark` class convention so existing skin-toggle plumbing continues
 // to work during the F3–F6 parallel-mode window.
+//
+// Exported as a NAMED function (no `export default`) on purpose: the
+// Vuexy registerPlugins() helper (src/@core/utils/plugins.ts) globs
+// plugins/*/index.{ts,js} and invokes the `default` export of each
+// match. A default export here would cause PrimeVue + its three
+// services to register twice — once via registerPlugins, once via the
+// explicit installPrimeVue(app) call in main.ts. The named export
+// keeps the explicit installer in main.ts as the single registration
+// site, which is the design intent (decouple PrimeVue from the Vuexy
+// @core machine so F6 can delete @core/ without affecting PrimeVue).
 
 import type { App } from 'vue'
 import PrimeVue from 'primevue/config'
@@ -17,7 +27,7 @@ import nl from 'primelocale/nl.json'
 import { CrewliPreset } from './theme'
 import { ptDefaults } from './defaults'
 
-export default function installPrimeVue(app: App) {
+export function installPrimeVue(app: App) {
   app.use(PrimeVue, {
     theme: {
       preset: CrewliPreset,