Filterbereich entfernt, Suche + Aktionen als Toolbar zusammengefasst

- Monat/Jahr-Filter geloescht (Server-Filter bleibt via URL nutzbar)
- Suchfeld und die Buttons 'PDF Export' und 'Bewerbung hinzufuegen'
  in einer gemeinsamen Toolbar zusammengefasst, als Pill-Buttons
- Tote filterForm-CSS und -JS entfernt

Co-Authored-By: Claude <noreply@anthropic.com>

public/js/main.js

@@ -13,7 +13,6 @@ const pdfExportModal = document.getElementById('pdfExportModal');
 // Form Elements
 const applicationForm = document.getElementById('applicationForm');
 const pdfExportForm = document.getElementById('pdfExportForm');
-const filterForm = document.getElementById('filterForm');
 
 // Button Elements
 const addApplicationBtn = document.getElementById('addApplicationBtn');
@@ -657,20 +656,6 @@ closePdfModal.addEventListener('click', () => hideModal(pdfExportModal));
 cancelPdfExport.addEventListener('click', () => hideModal(pdfExportModal));
 pdfExportForm.addEventListener('submit', generatePDF);
 
-// Filter Form
-document.getElementById('filterForm').addEventListener('submit', function(e) {
-    e.preventDefault();
-    const month = document.getElementById('filterMonth').value;
-    const year = document.getElementById('filterYear').value;
-    let url = '/';
-    if (month || year) {
-        url += '?';
-        if (month) url += `month=${month}&`;
-        if (year) url += `year=${year}&`;
-    }
-    window.location.href = url;
-});
-
 // Delete buttons (event delegation). Editing opens its own page (/bewerbung/:id).
 document.addEventListener('click', (e) => {
     if (e.target.closest('.delete-btn')) {