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>

lib/cortex/intent-classifier.ts

@@ -206,6 +206,18 @@ const INTENT_PATTERNS: Record<Exclude<CortexIntent, 'unknown'>, PatternConfig[]>
     { pattern: /^geef\s+(een\s+)?(overzicht|samenvatting)\s+(van\s+)?(de\s+)?diagnose[ns]?/i, weight: 0.85 },
     { pattern: /^(is\s+er\s+)?(een\s+)?persoonlijkheidsstoornis/i, weight: 0.9 },
   ],
+
+  // No Show casus
+  register_no_show: [
+    { pattern: /no.?show/i, weight: 1.0 },
+    { pattern: /niet\s+verschenen/i, weight: 0.95 },
+    { pattern: /niet\s+gekomen/i, weight: 0.95 },
+    { pattern: /niet\s+op\s+komen\s+dagen/i, weight: 0.95 },
+    { pattern: /afwezig\s+(bij|voor)\s+(de\s+)?afspraak/i, weight: 0.9 },
+    { pattern: /pati[eë]nt\s+afwezig/i, weight: 0.85 },
+    { pattern: /komt?\s+niet\s+(op|naar)/i, weight: 0.85 },
+    { pattern: /is\s+er\s+niet\s+(geweest)?/i, weight: 0.7 },
+  ],
 };
 
 // Help patterns (separate, always check)