fix: impersonation UX — banner contrast, route blocking, nav filtering

- Banner: white elevated button for contrast, fixed 48px height,
  layout top padding offset so content isn't obscured
- Middleware: allow GET me/profile (viewing), block mutations only;
  add auth/refresh to blocked routes
- Navigation: hide Platform section during impersonation; hide
  org-dependent items when impersonated user has no organisation
- Test: add read-only routes allowed test, auth/refresh blocked test

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/Http/Middleware/HandleImpersonation.php

@@ -14,15 +14,14 @@ use Symfony\Component\HttpFoundation\Response;
 class HandleImpersonation
 {
     /**
-     * Routes that are blocked during impersonation.
-     * These are prefix-matched against the request path (without api/v1 prefix).
+     * Routes that are blocked during impersonation (all methods).
+     * Prefix-matched against the request path (without api/v1 prefix).
      */
-    private const SENSITIVE_ROUTE_PREFIXES = [
-        'auth/password',
+    private const BLOCKED_ROUTE_PREFIXES = [
         'auth/logout',
+        'auth/refresh',
         'auth/mfa',
         'auth/trusted-devices',
-        'me/profile',
         'me/change-password',
         'me/change-email',
         'admin/impersonate',
@@ -101,7 +100,12 @@ class HandleImpersonation
         $path = $request->path();
         $path = preg_replace('#^api/v1/#', '', $path);
 
-        foreach (self::SENSITIVE_ROUTE_PREFIXES as $prefix) {
+        // Block profile mutations but allow GET (viewing)
+        if (str_starts_with($path, 'me/profile') && $request->method() !== 'GET') {
+            return true;
+        }
+
+        foreach (self::BLOCKED_ROUTE_PREFIXES as $prefix) {
             if (str_starts_with($path, $prefix)) {
                 return true;
             }

api/tests/Feature/Api/V1/Admin/AdminImpersonationTest.php

@@ -391,6 +391,7 @@ class AdminImpersonationTest extends TestCase
             ['POST', '/api/v1/auth/mfa/setup/totp'],
             ['GET', '/api/v1/auth/mfa/status'],
             ['GET', '/api/v1/auth/trusted-devices'],
+            ['POST', '/api/v1/auth/refresh'],
         ];
 
         foreach ($sensitiveRoutes as [$method, $url]) {
@@ -406,6 +407,23 @@ class AdminImpersonationTest extends TestCase
         }
     }
 
+    public function test_read_only_routes_allowed_during_impersonation(): void
+    {
+        Sanctum::actingAs($this->superAdmin);
+
+        $this->postJson(
+            "/api/v1/admin/impersonate/{$this->targetUser->id}",
+            $this->startPayload(),
+        )->assertOk();
+
+        // GET /auth/me should be allowed (profile viewing)
+        $response = $this->withHeader('X-Impersonate-User', $this->targetUser->id)
+            ->getJson('/api/v1/auth/me');
+
+        $response->assertOk();
+        $response->assertJsonPath('data.id', $this->targetUser->id);
+    }
+
     public function test_ip_change_terminates_session(): void
     {
         Sanctum::actingAs($this->superAdmin);

apps/app/src/components/platform/ImpersonationBanner.vue

@@ -65,54 +65,43 @@ onUnmounted(() => {
   <VSystemBar
     v-if="impersonationStore.isImpersonating"
     color="warning"
-    class="impersonation-banner"
+    height="48"
+    style="z-index: 9999; position: fixed; top: 0; left: 0; right: 0;"
+    class="px-4"
   >
     <VIcon
-      icon="tabler-user-exclamation"
+      icon="tabler-user-search"
+      size="20"
       class="me-2"
     />
-    <span>
+    <span class="text-body-2 font-weight-medium">
       Je bekijkt het platform als
       <strong>{{ impersonationStore.impersonatedUser?.full_name }}</strong>
-      ({{ impersonationStore.impersonatedUser?.email }})
     </span>
 
     <VSpacer />
 
-    <VChip
-      size="small"
-      variant="tonal"
-      color="warning"
-      class="me-3"
+    <span
+      v-if="remainingFormatted"
+      class="text-caption me-4"
     >
-      <VIcon
-        icon="tabler-clock"
-        size="14"
-        class="me-1"
-      />
       {{ remainingFormatted }}
-    </VChip>
+    </span>
 
     <VBtn
-      variant="tonal"
-      color="warning"
       size="small"
+      variant="elevated"
+      color="white"
+      class="text-warning"
       :loading="isStopping"
-      prepend-icon="tabler-arrow-back"
       @click="handleStop"
     >
+      <VIcon
+        icon="tabler-arrow-back"
+        size="16"
+        class="me-1"
+      />
       Terug naar admin
     </VBtn>
   </VSystemBar>
 </template>
-
-<style scoped>
-/* VSystemBar uses a fixed height by default; override to accommodate the button */
-.impersonation-banner {
-  z-index: 9999;
-  block-size: auto;
-  min-block-size: 36px;
-  padding-block: 4px;
-  padding-inline: 16px;
-}
-</style>

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

@@ -1,22 +1,36 @@
 <script lang="ts" setup>
 import { orgNavItems, platformNavItems } from '@/navigation/vertical'
 import { useAuthStore } from '@/stores/useAuthStore'
+import { useImpersonationStore } from '@/stores/useImpersonationStore'
 
 const authStore = useAuthStore()
+const impersonationStore = useImpersonationStore()
+
+const hasOrganisation = computed(() => !!authStore.organisations.length)
 
 const navItems = computed(() => {
   const orgName = authStore.currentOrganisation?.name ?? 'Beheer'
 
-  const orgItems = orgNavItems.map(item => {
+  let orgItems = orgNavItems.map(item => {
     if ('heading' in item && item.heading === 'Beheer') {
       return { ...item, heading: orgName }
     }
     return item
   })
 
-  if (authStore.isSuperAdmin) {
+  // During impersonation: hide org-dependent items if user has no organisation
+  if (impersonationStore.isImpersonating && !hasOrganisation.value) {
+    orgItems = orgItems.filter(item => {
+      if ('heading' in item) return false
+      return 'to' in item && item.to?.name === 'dashboard'
+    })
+  }
+
+  // Platform items: only for super_admin AND only when NOT impersonating
+  if (authStore.isSuperAdmin && !impersonationStore.isImpersonating) {
     return [...orgItems, ...platformNavItems]
   }
+
   return orgItems
 })
 
@@ -35,6 +49,7 @@ import { VerticalNavLayout } from '@layouts'
 </script>
 
 <template>
+  <div :style="{ paddingTop: impersonationStore.isImpersonating ? '48px' : '0' }">
   <VerticalNavLayout :nav-items="navItems">
     <!-- 👉 Organisation switcher -->
     <template #before-vertical-nav-items>
@@ -82,4 +97,5 @@ import { VerticalNavLayout } from '@layouts'
     <!-- 👉 Customizer -->
     <!-- <TheCustomizer /> -->
   </VerticalNavLayout>
+  </div>
 </template>