Activate UIUX V2 navigation for consultant and client pilots

app/ui/templates/components/client_navigation_v2.html

@@ -0,0 +1,59 @@
+{#
+  UI/UX V2 Phase 1C — Client pilot navigation
+
+  This component preserves the existing client portal URLs and visibility.
+  It changes presentation only and does not grant access, change routes, or
+  replace the client dashboard's existing AJAX content tabs.
+#}
+{% set _client_path = request.url.path %}
+{% set navigation_aria_label_v2 = 'Client workspace navigation' %}
+{% set navigation_items_v2 = [
+  {
+    'label': 'Dashboard',
+    'url': '/client/dashboard',
+    'visible': true,
+    'active': _client_path == '/client/dashboard'
+  },
+  {
+    'label': 'Compliance',
+    'url': '/client/compliance',
+    'visible': true,
+    'active': _client_path.startswith('/client/compliance') or _client_path.startswith('/client/engagements')
+  },
+  {
+    'label': 'Documents',
+    'url': '/client/documents',
+    'visible': true,
+    'active': _client_path.startswith('/client/documents')
+  },
+  {
+    'label': 'Messages',
+    'url': '/client/messages',
+    'visible': true,
+    'active': _client_path.startswith('/client/messages')
+  },
+  {
+    'label': 'Bills & Payments',
+    'url': '/client/billing',
+    'visible': true,
+    'active': _client_path.startswith('/client/billing')
+  },
+  {
+    'label': 'Profile',
+    'url': '/client/profile',
+    'visible': true,
+    'active': _client_path.startswith('/client/profile')
+  },
+  {
+    'label': 'Alerts',
+    'url': '/alerts',
+    'visible': true,
+    'active': _client_path.startswith('/alerts'),
+    'badge': unread_alert_count if unread_alert_count is defined and unread_alert_count > 0 else none
+  }
+] %}
+
+<div class="mb-6 overflow-hidden rounded-2xl border border-slate-200 bg-white shadow-soft" data-uiux-v2-pilot="client">
+  {% include "ui/templates/components/navigation_v2.html" %}
+  {% include "ui/templates/components/mobile_navigation_v2.html" %}
+</div>