feat(cortex): update chat/nudge flow, deepgram streaming and agenda form

Refines chat panel, nudge messages and artifact rendering, reworks
deepgram token/streaming handling, and adds test tooling deps
(playwright, cypress) to package.json.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

components/cortex/chat/nudge-chat-message.tsx

@@ -15,6 +15,7 @@ import { motion } from 'framer-motion';
 import { Button } from '@/components/ui/button';
 import { cn } from '@/lib/utils';
 import type { NudgeSuggestion } from '@/lib/cortex/types';
+import { useCortexStore } from '@/stores/cortex-store';
 
 interface NudgeChatMessageProps {
   suggestion: NudgeSuggestion;
@@ -60,6 +61,8 @@ function getAcceptButtonText(intent: string): string {
       return 'Ja, notitie maken';
     case 'cancel_appointment':
       return 'Ja, annuleren';
+    case 'register_no_show':
+      return 'Ja, pas brief aan';
     default:
       return 'Ja, uitvoeren';
   }
@@ -71,6 +74,7 @@ export function NudgeChatMessage({
   onDismiss,
 }: NudgeChatMessageProps) {
   const [progress, setProgress] = useState(100);
+  const isNoShowProcessing = useCortexStore((s) => s.isNoShowProcessing);
   const styles = PRIORITY_STYLES[suggestion.priority];
   const protocol = suggestion.suggestion.protocol;
 
@@ -169,9 +173,10 @@ export function NudgeChatMessage({
         <Button
           size="sm"
           onClick={() => onAccept(suggestion.id)}
-          className="bg-teal-600 hover:bg-teal-700 text-white"
+          disabled={isNoShowProcessing}
+          className="bg-teal-600 hover:bg-teal-700 text-white disabled:opacity-50 disabled:cursor-not-allowed"
         >
-          {getAcceptButtonText(suggestion.suggestion.intent)}
+          {isNoShowProcessing ? 'Bezig...' : getAcceptButtonText(suggestion.suggestion.intent)}
         </Button>
         <Button
           size="sm"