Debug pass: fix extract_text_keywords_mcp invalid-JS customScript, point Ollama delegation tools to shadow-death (real data, no simulation)

src/components/MCPHubTab.tsx

@@ -597,7 +597,7 @@ export const MCPHubTab: React.FC<MCPHubTabProps> = ({
       customScript: `
         const text = args.text || '';
         const words = text.toLowerCase().match(/\\b[a-z]{4,}\\b/g) || [];
-        const freq: Record<string, number> = {};
+        const freq = {};
         words.forEach(w => freq[w] = (freq[w] || 0) + 1);
         const topKeywords = Object.entries(freq).sort((a,b) => b[1] - a[1]).slice(0, 5).map(e => e[0]);
         return {