fix(queue): close three more ghost / lost-work holes found by a second adversarial hunt

A 36-agent adversarial sweep over the queue-persistence context surfaced three
NEW, reachable defects (all renderer-only) that the v3.3.80-82 work missed:

#1 retrySelectedJobs (the reuploadBtn / "erneut hochladen" path) is a THIRD
   re-add path that never cleared the completed-dedup guard. _completedUploadKeys
   gains file|hoster when a job reaches done; retry of a done row reset the job to
   pending and re-added its path to selectedFiles but kept the key. On a restart
   before the re-upload re-completes, restoreQueueStateFromConfig re-seeds the key
   and buildQueuePreview then refuses to recreate the row, so the deliberate
   re-upload silently vanished (lost work). Retry now clears the exact file|hoster
   keys it re-activates (per key, NOT per path, so a sibling hosters completed
   ghost is not resurrected).

#7 The folder-monitor pre-selected-hosters branch re-adds a path and calls
   buildQueuePreview WITHOUT going through applyHosterSelection, so the v3.3.82
   key-clear never ran. With removeFromQueueOnDone ON, a re-encoded / re-dropped
   file whose row was auto-removed was suppressed forever (silent no-upload that
   even survived a restart). The branch now clears the dedup keys for the freshly
   re-added paths, matching the manual modal flow.

#4 Deleting one hosters row of a multi-hoster file was silently undone. A
   manually deleted non-completed file|hoster pair is recreated by buildQueuePreview
   the next time it runs (adding another file, or a folder-monitor drop), because
   the recreate guard only consulted _completedUploadKeys, never the per-cell
   deletion. Result: the file got uploaded to a hoster the user explicitly
   removed, burning quota and publishing an unwanted link. Introduces
   _suppressedPreviewKeys: a manual delete of a non-done job whose file stays
   selected (pinned by a sibling job) suppresses that exact file|hoster from
   re-creation; the suppression is persisted in pendingQueue.suppressedKeys and
   re-seeded on restore (mirroring completedKeys), and is cleared whenever the
   user deliberately re-adds the file (modal or folder monitor) so a real re-add
   still works.

The clear-on-re-add logic for both sets is unified into clearDedupKeysForPaths()
and reused by applyHosterSelection and the folder-monitor branch.

Held for a separate decision/round (surfaced to the user): single-instance lock,
the sync-close write-sequence guard (its ghost symptom is masked by the existing
microtask-ordered removal + restore-time ts-gate; its real residual is rotation/
history integrity), and the upload-log timezone/same-basename edges (need a log
format change). 362 tests pass, lint clean, smoke boots identically to baseline.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

renderer/app.js

@@ -71,6 +71,7 @@ let _sessionUploadedBytes = 0; // Bytes fully uploaded this session (done jobs)
 const _sessionTrackedJobs = new Set(); // Job IDs already counted for totalBytes
 const _sessionDoneJobs = new Set(); // Job IDs already counted for uploadedBytes
 const _completedUploadKeys = new Set(); // 'filepath|hoster' keys for done uploads (survives removeFromQueueOnDone)
+const _suppressedPreviewKeys = new Set();
 const _deletedJobIds = new Set(); // IDs of jobs explicitly deleted by user (prevents re-creation from stale progress callbacks)
 // Coalesce removeFromQueueOnDone removals into one filter pass per microtask
 // to avoid O(N²) behaviour when a burst of jobs finish at once. Logic now
@@ -215,6 +216,7 @@ async function init() {
       }
       if (newFiles.length > 0) {
         const newPaths = new Set(newFiles.map(f => f.path));
+        clearDedupKeysForPaths(newPaths);
         selectedFiles.push(...newFiles);
         buildQueuePreview();
         updateUploadView();
@@ -671,12 +673,7 @@ function applyHosterSelection() {
     selectedFiles.push(..._pendingFiles);
     _pendingFiles = [];
   }
-  if (pendingPaths.size > 0) {
+  clearDedupKeysForPaths(pendingPaths);
-    for (const key of [..._completedUploadKeys]) {
-      const sep = key.lastIndexOf('|');
-      if (sep > 0 && pendingPaths.has(key.slice(0, sep))) _completedUploadKeys.delete(key);
-    }
-  }
   renderHosterSummary();
 
   // During an active upload, build preview jobs for the new files and inject
@@ -725,6 +722,12 @@ function restoreQueueStateFromConfig() {
     }
   }
 
+  if (Array.isArray(pending.suppressedKeys)) {
+    for (const k of pending.suppressedKeys) {
+      if (typeof k === 'string' && k) _suppressedPreviewKeys.add(k);
+    }
+  }
+
   selectedUploadHosters = Array.isArray(pending.selectedUploadHosters)
     ? pending.selectedUploadHosters.filter(Boolean)
     : selectedUploadHosters;
@@ -802,11 +805,17 @@ function buildPersistedQueueState() {
     const sep = k.lastIndexOf('|');
     if (sep > 0 && selectedFileMap.has(k.slice(0, sep))) completedKeys.push(k);
   }
+  const suppressedKeys = [];
+  for (const k of _suppressedPreviewKeys) {
+    const sep = k.lastIndexOf('|');
+    if (sep > 0 && selectedFileMap.has(k.slice(0, sep))) suppressedKeys.push(k);
+  }
   return {
     savedAt: Date.now(),
     selectedUploadHosters: getSelectedHosters(),
     selectedFiles: Array.from(selectedFileMap.values()),
     completedKeys,
+    suppressedKeys,
     queueJobs: queueJobs.map(job => {
       const isTerminal = TERMINAL.has(job.status);
       return {
@@ -1062,6 +1071,25 @@ function updateQueueActionButtons() {
   if (moveBottomBtn) moveBottomBtn.disabled = !hasMovableSelection;
 }
 
+function clearDedupKeysForPaths(pathSet) {
+  if (!pathSet || pathSet.size === 0) return;
+  for (const set of [_completedUploadKeys, _suppressedPreviewKeys]) {
+    for (const key of [...set]) {
+      const sep = key.lastIndexOf('|');
+      if (sep > 0 && pathSet.has(key.slice(0, sep))) set.delete(key);
+    }
+  }
+}
+
+function suppressPreviewKeysStillSelected(keys) {
+  if (!keys || keys.length === 0) return;
+  const stillSelected = new Set(selectedFiles.map(f => f.path));
+  for (const key of keys) {
+    const sep = key.lastIndexOf('|');
+    if (sep > 0 && stillSelected.has(key.slice(0, sep))) _suppressedPreviewKeys.add(key);
+  }
+}
+
 // Build preview jobs from selected files x selected hosters (before upload starts)
 function buildQueuePreview() {
   const hosters = getSelectedHosters();
@@ -1084,7 +1112,7 @@ function buildQueuePreview() {
   for (const file of selectedFiles) {
     for (const hoster of hosters) {
       const key = `${file.path}|${hoster}`;
-      if (!existingKeys.has(key) && !_completedUploadKeys.has(key)) {
+      if (!existingKeys.has(key) && !_completedUploadKeys.has(key) && !_suppressedPreviewKeys.has(key)) {
         const job = {
           id: `preview-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`,
           file: file.path, fileName: file.name, hoster,
@@ -1870,12 +1898,18 @@ document.addEventListener('keydown', (e) => {
           return j && (j.status === 'uploading' || j.status === 'queued' || j.status === 'retrying' || j.status === 'getting-server');
         });
         if (activeIds.length > 0) window.api.cancelSelectedJobs(activeIds);
+        const _deletedKeys = [];
         queueJobs = queueJobs.filter(j => {
-          if (selectedJobIds.has(j.id)) { removeJobFromIndex(j); return false; }
+          if (selectedJobIds.has(j.id)) {
+            if (j.file && j.hoster && j.status !== 'done') _deletedKeys.push(`${j.file}|${j.hoster}`);
+            removeJobFromIndex(j);
+            return false;
+          }
           return true;
         });
         selectedJobIds.clear();
         syncSelectedFilesFromQueue();
+        suppressPreviewKeysStillSelected(_deletedKeys);
         renderQueueTable();
         if (queueJobs.length === 0) { selectedFiles = []; updateUploadView(); }
         updateStatusBar();
@@ -1911,8 +1945,10 @@ async function handleContextAction(action) {
       return j && (j.status === 'uploading' || j.status === 'queued' || j.status === 'retrying' || j.status === 'getting-server');
     });
     if (activeIds.length > 0) window.api.cancelSelectedJobs(activeIds);
+    const _deletedKeys = [];
     queueJobs = queueJobs.filter(j => {
       if (selectedJobIds.has(j.id)) {
+        if (j.file && j.hoster && j.status !== 'done') _deletedKeys.push(`${j.file}|${j.hoster}`);
         removeJobFromIndex(j);
         return false;
       }
@@ -1920,6 +1956,7 @@ async function handleContextAction(action) {
     });
     selectedJobIds.clear();
     syncSelectedFilesFromQueue();
+    suppressPreviewKeysStillSelected(_deletedKeys);
     renderQueueTable();
     if (queueJobs.length === 0) { selectedFiles = []; updateUploadView(); }
     updateStatusBar();
@@ -2604,6 +2641,12 @@ async function retrySelectedJobs() {
     }
   });
   if (retryJobs.length === 0) return;
+  for (const j of retryJobs) {
+    if (j.file && j.hoster) {
+      _completedUploadKeys.delete(`${j.file}|${j.hoster}`);
+      _suppressedPreviewKeys.delete(`${j.file}|${j.hoster}`);
+    }
+  }
 
   // Select the retry jobs and start them immediately.
   // No renderQueueTable / updateQueueActionButtons / updateStatusBar here: