feat: sticky tab bar, improved context menu, instant retry

- Sticky tab bar: stays fixed at top when scrolling settings/history
- Context menu improvements:
  - Click on empty queue area deselects all selected jobs
  - Dynamic labels with selection count (e.g. "Links kopieren (3)")
  - Singular/plural for single selection ("Link kopieren" vs "Links kopieren")
  - "Alle entfernen" to clear entire queue
  - Reorganized menu items into logical groups with separators
- Instant retry: "Erneut versuchen" now immediately starts uploading
  the selected files instead of just resetting status to preview

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

renderer/app.js

@@ -768,6 +768,17 @@ function showContextMenu(x, y) {
   // Update "Always on top" text
   const aotItem = menu.querySelector('[data-action="always-on-top"]');
   if (aotItem) aotItem.textContent = alwaysOnTopState ? 'Immer im Vordergrund ✓' : 'Immer im Vordergrund';
+  // Update labels with selection count
+  const n = selectedJobIds.size;
+  const delItem = menu.querySelector('[data-action="delete-selected"]');
+  if (delItem) delItem.textContent = n > 1 ? `Entfernen (${n})` : 'Entfernen';
+  const copyItem = menu.querySelector('[data-action="copy-links"]');
+  if (copyItem) copyItem.textContent = n > 1 ? `Links kopieren (${n})` : 'Link kopieren';
+  menu.querySelectorAll('[data-action="retry-selected"]').forEach(el => {
+    el.textContent = n > 1 ? `Erneut versuchen (${n})` : 'Erneut versuchen';
+  });
+  const startItem = menu.querySelector('[data-action="start-selected"]');
+  if (startItem) startItem.textContent = n > 1 ? `Ausgewählte starten (${n})` : 'Ausgewählte starten';
 
   menu.style.display = 'block';
   const menuX = Math.min(x, window.innerWidth - menu.offsetWidth - 5);
@@ -953,6 +964,16 @@ async function handleContextAction(action) {
     persistQueueStateSoon();
   } else if (action === 'copy-all-links') {
     copyAllLinks();
+  } else if (action === 'delete-all') {
+    queueJobs.forEach(j => removeJobFromIndex(j));
+    queueJobs = [];
+    selectedJobIds.clear();
+    selectedFiles = [];
+    syncSelectedFilesFromQueue();
+    renderQueueTable();
+    updateUploadView();
+    updateStatusBar();
+    persistQueueStateSoon();
   } else if (action === 'always-on-top') {
     alwaysOnTopState = !alwaysOnTopState;
     await window.api.setAlwaysOnTop(alwaysOnTopState);
@@ -1237,7 +1258,8 @@ function handleStats(data) {
 }
 
 // --- Retry ---
-function retrySelectedJobs() {
+async function retrySelectedJobs() {
+  const retryJobs = [];
   queueJobs.forEach(j => {
     if (selectedJobIds.has(j.id) && ['error', 'done', 'aborted', 'skipped'].includes(j.status)) {
       j.status = 'preview';
@@ -1249,16 +1271,22 @@ function retrySelectedJobs() {
       j.remaining = 0;
       j.progress = 0;
       j.uploadId = null;
+      retryJobs.push(j);
       if (!selectedFiles.find(f => f.path === j.file || f.name === j.fileName)) {
         selectedFiles.push({ path: j.file, name: j.fileName, size: j.bytesTotal });
       }
     }
   });
+  if (retryJobs.length === 0) return;
+
+  // Select the retry jobs and start them immediately
   selectedJobIds.clear();
+  retryJobs.forEach(j => selectedJobIds.add(j.id));
   renderQueueTable();
   updateQueueActionButtons();
   updateStatusBar();
   persistQueueStateSoon();
+  await startSelectedUpload();
 }
 
 async function abortSelectedJobs() {
@@ -2314,6 +2342,17 @@ function setupListeners() {
     document.getElementById('shutdownOverlay').style.display = 'none';
   });
 
+  // Click on empty area in queue → deselect all
+  document.getElementById('upload-view').addEventListener('click', (e) => {
+    if (!e.target.closest('.queue-row') && !e.target.closest('.btn') && !e.target.closest('.context-menu') && !e.target.closest('.recent-files-panel')) {
+      if (selectedJobIds.size > 0) {
+        selectedJobIds.clear();
+        renderQueueTable();
+        updateQueueActionButtons();
+      }
+    }
+  });
+
   // Right-click on upload view background
   document.getElementById('upload-view').addEventListener('contextmenu', (e) => {
     if (e.target.closest('.queue-row')) return; // handled per row

renderer/index.html

@@ -266,11 +266,15 @@
 
   <div class="context-menu" id="contextMenu" style="display:none">
     <div class="ctx-item" data-action="start-selected">Ausgewählte starten</div>
-    <div class="ctx-item" data-action="copy-links">Links kopieren</div>
     <div class="ctx-item" data-action="retry-selected">Erneut versuchen</div>
-    <div class="ctx-item" data-action="delete-selected">Entfernen</div>
     <div class="ctx-separator"></div>
+	<div class="ctx-item" data-action="copy-links">Links kopieren</div>
     <div class="ctx-item" data-action="copy-all-links">Alle Links kopieren</div>
+    <div class="ctx-separator"></div>
+    <div class="ctx-item" data-action="delete-selected">Entfernen</div>
+    <div class="ctx-item" data-action="delete-all">Alle entfernen</div>
+	<div class="ctx-separator"></div>
+	<div class="ctx-item" data-action="retry-selected">Erneut versuchen</div>
   </div>
 
   <div class="context-menu" id="recentContextMenu" style="display:none">

renderer/styles.css

@@ -26,7 +26,8 @@ body {
   background:
     radial-gradient(circle at top right, rgba(62, 167, 255, 0.08), transparent 28%),
     linear-gradient(180deg, #14171b 0%, #191d23 100%);
-  min-height: 100vh;
+  height: 100vh;
+  overflow: hidden;
   color: var(--text);
   user-select: none;
   display: flex;
@@ -41,6 +42,9 @@ body {
   border-bottom: 1px solid var(--border);
   background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.08));
   flex-shrink: 0;
+  position: sticky;
+  top: 0;
+  z-index: 100;
 }
 
 .tab {