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/chat/chat-message.tsx

@@ -0,0 +1,99 @@
+'use client';
+
+/**
+ * Chat Message Component (v3.0)
+ *
+ * Displays individual chat messages with styling per message type.
+ * Supports user, assistant, system, and error message types.
+ *
+ * Epic: E2 (Chat Panel & Messages)
+ * Story: E2.S2 (ChatMessage component)
+ */
+
+import { format } from 'date-fns';
+import { nl } from 'date-fns/locale';
+import { CheckCircle2, Sparkles } from 'lucide-react';
+import { cn } from '@/lib/utils';
+import type { ChatMessage as ChatMessageType } from '@/stores/cortex-store';
+import { getConfidenceLabel } from '@/lib/cortex/action-parser';
+
+// Message styling configuration per type
+const MESSAGE_STYLES = {
+  user: {
+    container: 'self-end bg-amber-50 border-amber-200 text-slate-900',
+    borderRadius: 'rounded-2xl rounded-tr-sm',
+    maxWidth: 'max-w-[80%]',
+  },
+  assistant: {
+    container: 'self-start bg-slate-100 border-slate-200 text-slate-900',
+    borderRadius: 'rounded-2xl rounded-tl-sm',
+    maxWidth: 'max-w-[85%]',
+  },
+  system: {
+    container: 'self-center bg-transparent border-transparent text-slate-500 text-sm italic',
+    borderRadius: 'rounded-lg',
+    maxWidth: 'max-w-[90%]',
+  },
+  error: {
+    container: 'self-start bg-red-50 border-red-200 text-red-900',
+    borderRadius: 'rounded-2xl',
+    maxWidth: 'max-w-[80%]',
+  },
+} as const;
+
+interface ChatMessageProps {
+  message: ChatMessageType;
+  showTimestamp?: boolean;
+}
+
+export function ChatMessage({ message, showTimestamp = false }: ChatMessageProps) {
+  const styles = MESSAGE_STYLES[message.type];
+
+  // Don't show border for system messages
+  const showBorder = message.type !== 'system';
+
+  return (
+    <div
+      className={cn(
+        'flex flex-col px-4 py-2.5 border transition-all',
+        styles.container,
+        styles.borderRadius,
+        styles.maxWidth,
+        !showBorder && 'border-none px-0 py-1'
+      )}
+    >
+      {/* Message content */}
+      <div className="whitespace-pre-wrap break-words leading-relaxed">
+        {message.content}
+      </div>
+
+      {/* Action badge (E3.S4) - show if action was detected */}
+      {message.action && message.type === 'assistant' && (
+        <div className="mt-2 pt-2 border-t border-slate-200">
+          <div className="flex items-center gap-2 text-xs">
+            <Sparkles className="w-3.5 h-3.5 text-amber-600" />
+            <span className="font-medium text-slate-700">
+              {message.action.intent === 'dagnotitie' && 'Dagnotitie'}
+              {message.action.intent === 'zoeken' && 'Patiënt zoeken'}
+              {message.action.intent === 'overdracht' && 'Overdracht'}
+              {message.action.intent === 'unknown' && 'Onbekend'}
+            </span>
+            {message.action.confidence >= 0.7 && (
+              <CheckCircle2 className="w-3.5 h-3.5 text-green-600" />
+            )}
+            <span className="text-slate-500">
+              {getConfidenceLabel(message.action.confidence)}
+            </span>
+          </div>
+        </div>
+      )}
+
+      {/* Timestamp (optional) */}
+      {showTimestamp && message.timestamp && (
+        <div className="text-xs text-slate-400 mt-1.5">
+          {format(message.timestamp, 'HH:mm', { locale: nl })}
+        </div>
+      )}
+    </div>
+  );
+}