prevent overview links from implicit submit

src/components/PreparationOverview.jsx

@@ -22,7 +22,7 @@ function Overview({tenders,now}) {
  return <section aria-label="Hazırlık dosyaları özeti" className="bg-white border rounded-xl p-4 space-y-3">
   <h2 className="font-bold text-lg">Hazırlık dosyaları · {tenders.length}</h2>
   <p className="text-xs text-slate-600">Panodaki ve sorumlu filtresindeki kayıtlı taslaklar gösterilir. Kaydetmediğiniz değişiklikler bu özete girmez. Eksik sayısı başvuru onayı değildir; çıktı sırasında belgeler yeniden kontrol edilir.</p>
-  <button className="border rounded px-3 py-2 text-xs" disabled={vault.loading} aria-busy={vault.loading} onClick={()=>setRefresh(n=>n+1)}>Belge durumunu yenile</button>
+  <button type="button" className="border rounded px-3 py-2 text-xs" disabled={vault.loading} aria-busy={vault.loading} onClick={()=>setRefresh(n=>n+1)}>Belge durumunu yenile</button>
   {vault.loading&&<p role="status" className="text-xs">Belge durumu kontrol ediliyor…</p>}
   {vault.error&&<p role="alert" className="text-xs text-red-700">Belge durumu doğrulanamadı: {vault.error}</p>}
   {!tenders.length ? <p className="text-sm">İhaleyi takibe alın veya hazırlık görevi açın; dosyası burada görünsün.</p> :
@@ -31,13 +31,13 @@ function Overview({tenders,now}) {
     <tbody role="rowgroup" className="block md:table-row-group">{tenders.map(tender=>{
      const summary=preparationSummary(tender,{...vault,healthPortfolio:userProfile.scrapedCapabilities?.healthPortfolio || []},now);
      return <tr role="row" key={tender.id} className="block md:table-row border rounded-lg mb-3 md:mb-0 md:rounded-none md:border-0 md:border-b align-top [overflow-wrap:anywhere]">
-      <td role="cell" className="block md:table-cell p-2"><span aria-hidden="true" className="block md:hidden text-xs font-bold mb-1">İhale</span><button onClick={()=>open(tender,'source')} className="text-blue-800 underline text-left">{tender.ikn} · {tender.baslik}</button><p className="text-xs mt-1">{summary.issues.length ? `${summary.issues.length} kontrol eksik` : 'Kayıtlı kontroller tamam; son kontrol gerekli'}</p></td>
+      <td role="cell" className="block md:table-cell p-2"><span aria-hidden="true" className="block md:hidden text-xs font-bold mb-1">İhale</span><button type="button" onClick={()=>open(tender,'source')} className="text-blue-800 underline text-left">{tender.ikn} · {tender.baslik}</button><p className="text-xs mt-1">{summary.issues.length ? `${summary.issues.length} kontrol eksik` : 'Kayıtlı kontroller tamam; son kontrol gerekli'}</p></td>
       <td role="cell" className="block md:table-cell p-2"><span aria-hidden="true" className="block md:hidden text-xs font-bold mb-1">Sorumlu</span>{summary.owner}</td>
       <td role="cell" className="block md:table-cell p-2"><span aria-hidden="true" className="block md:hidden text-xs font-bold mb-1">Belge eksikleri</span><details><summary className="cursor-pointer">{summary.documentIssues.length ? `${summary.documentIssues.length} belge kontrolü` : 'Kayıtlı belgelerde eksik bulunmadı'}</summary>
-       <ul className="space-y-2 mt-2">{summary.documentIssues.map((text,i)=><li key={i}><button onClick={()=>open(tender,'checks')} className="text-blue-800 underline text-left">{text}</button></li>)}</ul>
+       <ul className="space-y-2 mt-2">{summary.documentIssues.map((text,i)=><li key={i}><button type="button" onClick={()=>open(tender,'checks')} className="text-blue-800 underline text-left">{text}</button></li>)}</ul>
       </details></td>
-      <td role="cell" className="block md:table-cell p-2"><span aria-hidden="true" className="block md:hidden text-xs font-bold mb-1">Sıradaki kontrol</span><button onClick={()=>open(tender,summary.next.target)} className="text-blue-800 underline text-left">{summary.next.text}</button>
+      <td role="cell" className="block md:table-cell p-2"><span aria-hidden="true" className="block md:hidden text-xs font-bold mb-1">Sıradaki kontrol</span><button type="button" onClick={()=>open(tender,summary.next.target)} className="text-blue-800 underline text-left">{summary.next.text}</button>
-       <details className="mt-2"><summary className="cursor-pointer text-xs">Tüm eksikleri göster</summary><ul className="space-y-2 mt-2">{summary.issues.map((item,i)=><li key={i}><button onClick={()=>open(tender,item.target)} className="text-blue-800 underline text-left">{item.text}</button></li>)}</ul></details>
+       <details className="mt-2"><summary className="cursor-pointer text-xs">Tüm eksikleri göster</summary><ul className="space-y-2 mt-2">{summary.issues.map((item,i)=><li key={i}><button type="button" onClick={()=>open(tender,item.target)} className="text-blue-800 underline text-left">{item.text}</button></li>)}</ul></details>
       </td>
      </tr>;
     })}</tbody>