refactor: rename swift → cortex in code and documentation

Complete rename of "swift" terminology to "cortex" across the codebase:

Code Changes:
- Rename directories: lib/swift → lib/cortex, components/swift → components/cortex
- Rename API routes: /api/swift/* → /api/cortex/*
- Rename page routes: /epd/swift → /epd/cortex
- Rename store: swift-store.ts → cortex-store.ts

Type Renames:
- SwiftIntent → CortexIntent
- SwiftStore → CortexStore
- useSwiftStore → useCortexStore
- SwiftContext → CortexContext
- useSwiftVoice → useCortexVoice

Documentation Updates (docs/intent/):
- Safety Net → Nudge (Layer 3 rename)
- SafetySuggestion → NudgeSuggestion
- evaluateSafetyNet → evaluateNudge
- SWIFT_* feature flags → CORTEX_*
- All path references updated to match new structure

Files affected: 47 files, ~700 lines changed

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

components/cortex/command-center/context-bar.tsx

@@ -0,0 +1,85 @@
+'use client';
+
+/**
+ * Context Bar
+ *
+ * Top bar showing current context: shift, selected patient, user info.
+ * Height: 48px (h-12)
+ */
+
+import { useCortexStore, type ShiftType } from '@/stores/cortex-store';
+import { Sun, Moon, Sunrise, Sunset, X, User, ArrowLeft } from 'lucide-react';
+import Link from 'next/link';
+import { useOffline } from './offline-banner';
+
+const SHIFT_CONFIG: Record<ShiftType, { icon: typeof Sun; label: string; color: string }> = {
+  nacht: { icon: Moon, label: 'Nachtdienst', color: 'text-indigo-600' },
+  ochtend: { icon: Sunrise, label: 'Ochtenddienst', color: 'text-amber-600' },
+  middag: { icon: Sun, label: 'Middagdienst', color: 'text-yellow-600' },
+  avond: { icon: Sunset, label: 'Avonddienst', color: 'text-orange-600' },
+};
+
+export function ContextBar() {
+  const { shift, activePatient, setActivePatient } = useCortexStore();
+  const isOffline = useOffline();
+  const shiftConfig = SHIFT_CONFIG[shift];
+  const ShiftIcon = shiftConfig.icon;
+
+  return (
+    <header
+      className="h-12 border-b border-slate-200 flex items-center px-4 justify-between shrink-0 bg-white"
+      style={isOffline ? { marginTop: '40px' } : undefined}
+    >
+      {/* Left: Logo + Shift */}
+      <div className="flex items-center gap-4">
+        <Link
+          href="/epd/clients"
+          className="flex items-center gap-2 text-slate-600 hover:text-slate-900 transition-colors"
+          title="Terug naar EPD"
+        >
+          <ArrowLeft size={16} />
+          <span className="text-sm font-semibold tracking-tight">Terug naar EPD</span>
+        </Link>
+
+        <div className="h-4 w-px bg-slate-200" />
+
+        <div className={`flex items-center gap-1.5 ${shiftConfig.color}`}>
+          <ShiftIcon size={14} />
+          <span className="text-xs font-medium">{shiftConfig.label}</span>
+        </div>
+      </div>
+
+      {/* Center: Active Patient */}
+      <div className="flex items-center">
+        {activePatient ? (
+          <div className="flex items-center gap-2 px-3 py-1 rounded-full bg-slate-100 border border-slate-300">
+            <div className="w-5 h-5 rounded-full bg-blue-600 flex items-center justify-center text-[10px] font-medium text-white">
+              {activePatient.name_given[0]?.[0]}
+              {activePatient.name_family[0]}
+            </div>
+            <span className="text-sm text-slate-900">
+              {activePatient.name_given.join(' ')} {activePatient.name_family}
+            </span>
+            <button
+              onClick={() => setActivePatient(null)}
+              className="p-0.5 rounded hover:bg-slate-200 text-slate-400 hover:text-slate-700 transition-colors"
+              title="Patiënt deselecteren"
+            >
+              <X size={14} />
+            </button>
+          </div>
+        ) : (
+          <span className="text-sm text-slate-500">Geen patiënt geselecteerd</span>
+        )}
+      </div>
+
+      {/* Right: User */}
+      <div className="flex items-center gap-3">
+        <div className="flex items-center gap-2 text-slate-600">
+          <User size={16} />
+          <span className="text-xs hidden sm:block">Verpleegkundige</span>
+        </div>
+      </div>
+    </header>
+  );
+}