fix: revert portal links to search page to fix permission errors while keeping enhanced backend scraping

frontend/components/AgentAnalysis.tsx

@@ -433,6 +433,14 @@ export default function AgentAnalysis({ tender, companyProfile, analysis, onAnal
                      <span className="text-purple-400 text-xs">📜</span> History Available
                    </div>
                  )}
+                 <a 
+                   href={`https://www.mercadopublico.cl/Portal/BuscarLicitacion?texto=${tender?.code}`}
+                   target="_blank"
+                   rel="noopener noreferrer"
+                   className="px-4 py-2 rounded-xl bg-purple-500/10 border border-purple-500/20 text-[10px] font-bold text-purple-400 hover:bg-purple-500/20 transition-all uppercase tracking-widest whitespace-nowrap"
+                 >
+                   Visit Official Site 🔗
+                 </a>
                  {tenderDetails.metadata?.question_count && tenderDetails.metadata.question_count > 0 ? (
                    <a 
                      href={`https://www.mercadopublico.cl/Procurement/Modules/RFB/DetailsAcquisition.aspx?codigo=${tender?.code}&tab=4`}
@@ -711,7 +719,7 @@ export default function AgentAnalysis({ tender, companyProfile, analysis, onAnal
                       </div>
                       <div className="flex flex-wrap gap-2 w-full sm:w-auto justify-end">
                           <a 
-                            href={`https://www.mercadopublico.cl/Procurement/Modules/RFB/DetailsAcquisition.aspx?codigo=${tender?.code}`}
+                            href={`https://www.mercadopublico.cl/Portal/BuscarLicitacion?texto=${tender?.code}`}
                             target="_blank" 
                             rel="noopener noreferrer"
                             className="flex items-center gap-2 px-4 py-2 rounded-xl bg-white/5 border border-white/10 text-[10px] font-bold text-slate-400 hover:text-white hover:bg-white/10 transition uppercase tracking-widest group"

frontend/components/TenderSearch.tsx

@@ -242,7 +242,7 @@ export default function TenderSearch({ tenders, onSearch, onAnalyze, forceShowFo
           <div className="glass-card rounded-[2.5rem] overflow-hidden border border-white/5 bg-slate-900/40 backdrop-blur-xl p-10 md:p-14 relative">
             <div className="absolute top-0 right-0 p-8">
               <a 
-                href={`https://www.mercadopublico.cl/Procurement/Modules/RFB/DetailsAcquisition.aspx?codigo=${tender.code}`} 
+                href={`https://www.mercadopublico.cl/Portal/BuscarLicitacion?texto=${tender.code}`} 
                 target="_blank" 
                 rel="noopener noreferrer"
                 className="px-4 py-2 rounded-xl bg-purple-500/10 border border-purple-500/20 text-[10px] font-bold text-purple-400 hover:bg-purple-500/20 transition-all uppercase tracking-widest whitespace-nowrap"