Task 6: Rebuild PMRInterface layout + Breadcrumb

Changes made:
- Created Breadcrumb.tsx component with Patient Record > [View] > [Expanded Item] navigation
- Integrated Breadcrumb into PMRInterface (desktop/tablet only, not mobile)
- Breadcrumb receives currentView, expandedItem props and handles navigation callbacks
- Updated all font references from font-inter to font-ui (Elvaro Grotesque)
- Added shadow-pmr to default view placeholder card
- Mobile back button updated to use font-ui

Visual verification:
- Breadcrumb renders correctly with gray-400 text, chevron separators, 13px font size
- Navigation updates breadcrumb path correctly (tested Summary → Experience)
- Layout: fixed sidebar, sticky banner, scrollable content all working
- View switching is instant (no animation between views)
- Premium font (Elvaro Grotesque) rendering throughout interface

Quality checks: All passed (typecheck, lint, build — 396.39 KB bundle)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/Breadcrumb.tsx

@@ -0,0 +1,96 @@
+import { ChevronRight } from 'lucide-react'
+import type { ViewId } from '../types/pmr'
+
+interface BreadcrumbProps {
+  currentView: ViewId
+  expandedItem?: {
+    name: string
+    type: string
+  }
+  onNavigateToView?: (view: ViewId) => void
+  onCollapseItem?: () => void
+}
+
+const viewLabels: Record<ViewId, string> = {
+  summary: 'Summary',
+  consultations: 'Experience',
+  medications: 'Skills',
+  problems: 'Achievements',
+  investigations: 'Projects',
+  documents: 'Education',
+  referrals: 'Contact',
+}
+
+export function Breadcrumb({
+  currentView,
+  expandedItem,
+  onNavigateToView,
+  onCollapseItem,
+}: BreadcrumbProps) {
+  const handleNavigateToPatientRecord = () => {
+    if (onNavigateToView) {
+      onNavigateToView('summary')
+    }
+  }
+
+  const handleNavigateToCurrentView = () => {
+    if (onCollapseItem) {
+      onCollapseItem()
+    }
+  }
+
+  return (
+    <nav
+      className="flex items-center gap-2 mb-6"
+      aria-label="Breadcrumb"
+    >
+      <ol className="flex items-center gap-2">
+        {/* Patient Record (root) */}
+        <li>
+          <button
+            type="button"
+            onClick={handleNavigateToPatientRecord}
+            className="text-[13px] font-ui font-normal text-gray-400 hover:text-pmr-nhsblue transition-colors"
+          >
+            Patient Record
+          </button>
+        </li>
+
+        <li>
+          <ChevronRight size={14} className="text-gray-300" />
+        </li>
+
+        {/* Current view */}
+        <li>
+          {expandedItem ? (
+            <button
+              type="button"
+              onClick={handleNavigateToCurrentView}
+              className="text-[13px] font-ui font-normal text-gray-400 hover:text-pmr-nhsblue transition-colors"
+            >
+              {viewLabels[currentView]}
+            </button>
+          ) : (
+            <span className="text-[13px] font-ui font-normal text-gray-600">
+              {viewLabels[currentView]}
+            </span>
+          )}
+        </li>
+
+        {/* Expanded item (if any) */}
+        {expandedItem && (
+          <>
+            <li>
+              <ChevronRight size={14} className="text-gray-300" />
+            </li>
+            <li>
+              <span className="text-[13px] font-ui font-normal text-gray-600">
+                {expandedItem.name}
+              </span>
+            </li>
+          </>
+        )}
+      </ol>
+    </nav>
+  )
+}

src/components/PMRInterface.tsx

@@ -5,6 +5,7 @@ import type { ViewId } from '../types/pmr'
 import { ClinicalSidebar } from './ClinicalSidebar'
 import { PatientBanner } from './PatientBanner'
 import { MobileBottomNav } from './MobileBottomNav'
+import { Breadcrumb } from './Breadcrumb'
 import { SummaryView } from './views/SummaryView'
 import { ConsultationsView } from './views/ConsultationsView'
 import { MedicationsView } from './views/MedicationsView'
@@ -130,11 +131,11 @@ function PMRContent({ children }: PMRInterfaceProps) {
         return <ReferralsView />
       default:
         return (
-          <div className="bg-white border border-gray-200 rounded p-6">
+          <div className="bg-white border border-gray-200 rounded p-6 shadow-pmr">
-            <h1 className="font-inter font-semibold text-lg text-gray-900 capitalize">
+            <h1 className="font-ui font-semibold text-lg text-gray-900 capitalize">
               {activeView} View
             </h1>
-            <p className="font-inter text-sm text-gray-500 mt-2">
+            <p className="font-ui text-sm text-gray-500 mt-2">
               Content for {activeView} will be implemented in a separate task.
             </p>
           </div>
@@ -201,11 +202,26 @@ function PMRContent({ children }: PMRInterfaceProps) {
             <h1 className="sr-only">{viewLabels[activeView]}</h1>
           </div>
 
+          {/* Breadcrumb (desktop/tablet only) */}
+          {!isMobile && (
+            <Breadcrumb
+              currentView={activeView}
+              expandedItem={
+                expandedItemId
+                  ? { name: expandedItemId, type: activeView }
+                  : undefined
+              }
+              onNavigateToView={handleNavigate}
+              onCollapseItem={() => setExpandedItem(null)}
+            />
+          )}
+
+          {/* Mobile back button (mobile only) */}
           {isMobile && activeView !== 'summary' && (
             <button
               type="button"
               onClick={handleBackToSummary}
-              className="flex items-center gap-1 text-pmr-nhsblue text-sm font-inter font-medium mb-4 hover:underline"
+              className="flex items-center gap-1 text-pmr-nhsblue text-sm font-ui font-medium mb-4 hover:underline"
             >
               <ArrowLeft size={14} />
               Back to Summary
@@ -246,7 +262,7 @@ function MobileSearchBar({ query, onChange }: MobileSearchBarProps) {
           placeholder="Search record..."
           value={query}
           onChange={e => onChange(e.target.value)}
-          className="w-full h-10 pl-10 pr-10 bg-white border border-gray-200 rounded text-sm font-inter text-gray-900 placeholder-gray-400 focus:outline-none focus:border-pmr-nhsblue focus:ring-1 focus:ring-pmr-nhsblue/20 transition-colors"
+          className="w-full h-10 pl-10 pr-10 bg-white border border-gray-200 rounded text-sm font-ui text-gray-900 placeholder-gray-400 focus:outline-none focus:border-pmr-nhsblue focus:ring-1 focus:ring-pmr-nhsblue/20 transition-colors"
         />
         {query && (
           <button