align daily bulletin with Istanbul date

src/components/tools/DailyBulletin.jsx

@@ -1,14 +1,15 @@
 import React from 'react';
 import { useApp } from '../../context/AppContext';
 import { Newspaper, Calendar, Building2, Package, ArrowRight } from 'lucide-react';
+import { istanbulDateKey } from '../../services/tenderCalendar';
 
 export const DailyBulletin = () => {
   const { tenders, setActiveTenderDetail } = useApp();
 
   // Bugün: yayımlanma (ilan) tarihi bugün olanlar; ilan tarihi yoksa havuza az önce eklenenler.
-  const bugun = new Date();
-  const todayStr = `${String(bugun.getDate()).padStart(2, '0')}.${String(bugun.getMonth() + 1).padStart(2, '0')}.${bugun.getFullYear()}`;
-  const isoBugun = `${bugun.getFullYear()}-${String(bugun.getMonth() + 1).padStart(2, '0')}-${String(bugun.getDate()).padStart(2, '0')}`;
+  const isoBugun = istanbulDateKey();
+  const [bugunYil, bugunAy, bugunGun] = isoBugun.split('-');
+  const todayStr = `${bugunGun}.${bugunAy}.${bugunYil}`;
   const bugunMu = (v) => !!v && (String(v).startsWith(isoBugun) || String(v).slice(0, 10) === todayStr);
   const todayTenders = tenders.filter(t =>
     bugunMu(t.ilanTarihi) || (!t.ilanTarihi && ((t.eklenmeZamani || '').includes('az') || (t.eklenmeZamani || '').includes('saat')))
@@ -42,11 +43,11 @@ export const DailyBulletin = () => {
                 <span className="text-[10px] font-extrabold bg-blue-100 text-blue-800 px-2 py-0.5 rounded">
                   #{t.ikn}
                 </span>
-                <h3 
-                  onClick={() => setActiveTenderDetail(t)}
-                  className="font-bold text-base text-slate-900 hover:text-blue-600 cursor-pointer mt-1"
-                >
-                  {t.baslik}
+                <h3>
+                  <button type="button" aria-haspopup="dialog" onClick={() => setActiveTenderDetail(t)}
+                    className="text-left font-bold text-base text-slate-900 hover:text-blue-600 cursor-pointer mt-1">
+                    {t.baslik}
+                  </button>
                 </h3>
               </div>
               <span className="text-xs font-bold text-slate-500 bg-slate-100 px-2.5 py-1 rounded-md">
@@ -72,6 +73,7 @@ export const DailyBulletin = () => {
             </div>
 
             <button
+              type="button"
               onClick={() => setActiveTenderDetail(t)}
               className="text-xs font-bold text-blue-600 hover:text-blue-800 flex items-center gap-1 hover:underline"
             >