feat(market-intel): implement role-based campaign engine and gritty reporting

- Implementierung der rollenbasierten Campaign-Engine mit operativem Fokus (Grit).
- Integration von Social Proof (Referenzkunden) in die E-Mail-Generierung.
- Erweiterung des Deep Tech Audits um gezielte Wettbewerber-Recherche (Technographic Search).
- Fix des Lösch-Bugs in der Target-Liste und Optimierung des Frontend-States.
- Erweiterung des Markdown-Exports um transparente Proof-Links und Evidenz.
- Aktualisierung der Dokumentation in readme.md und market_intel_backend_plan.md.

general-market-intelligence/components/StepReview.tsx

@@ -30,14 +30,18 @@ export const StepReview: React.FC<StepReviewProps> = ({ competitors, categorized
   };
 
   const renderCompetitorList = (comps: Competitor[], category: string) => {
-    if (!comps || comps.length === 0) {
+    // Filter out competitors that have been removed from the main list
+    const activeIds = new Set(competitors.map(c => c.id));
+    const activeComps = comps.filter(c => activeIds.has(c.id));
+
+    if (!activeComps || activeComps.length === 0) {
       return (
         <li className="p-4 text-center text-slate-500 italic bg-white rounded-md border border-slate-100 mb-2 last:mb-0">
           Keine {category} Konkurrenten gefunden.
         </li>
       );
     }
-    return comps.map((comp) => (
+    return activeComps.map((comp) => (
       <li key={comp.id} className="flex items-start justify-between p-4 hover:bg-slate-50 transition-colors group bg-white rounded-md border border-slate-100 mb-2 last:mb-0">
         <div className="flex-1">
           <div className="flex items-center gap-2">