fix(downloads): move column reset into the header menu

Keep the action column reserved for row actions and expose the global layout reset through the existing column-header context menu.

src/renderer/App.tsx

@@ -4804,21 +4804,23 @@ export function App(): ReactElement {
     }
   }), [actionBusy, columnOrder, downloadDisclosureRevision, downloadPackageSpeeds, downloadQueueTotalBytes, downloadRemaining, downloadsSortColumn, downloadsSortDescending, downloadsViewCore, editingName, editingPackageId, gridTemplate, liveDownloadSpeedBps, providerStats.length, scheduleCountdown, schedulePickerOpen, scheduleTimeInput, snapshot.canPause, snapshot.canStart, snapshot.canStop, snapshot.clipboardActive, snapshot.etaText, snapshot.reconnectSeconds, snapshot.session.items, snapshot.session.paused, snapshot.session.reconnectReason, snapshot.session.running, snapshot.settings.animatePackageDisclosure, snapshot.settings.scheduledStartEpochMs, snapshot.stats.totalDownloaded, snapshot.stats.totalPackages]);
 
+  const resetColumnLayout = useCallback((): void => {
+    if (columnDragSettleTimerRef.current !== null) {
+      window.clearTimeout(columnDragSettleTimerRef.current);
+      columnDragSettleTimerRef.current = null;
+    }
+    cancelColumnDragAnimations();
+    if (columnDragSessionRef.current) {
+      clearDownloadColumnDrag(columnDragSessionRef.current);
+      columnDragSessionRef.current = null;
+    }
+    setColumnOrder(DEFAULT_COLUMN_ORDER);
+    persistColumnOrder(DEFAULT_COLUMN_ORDER);
+    showToast("Spaltenlayout zurückgesetzt", 1800);
+  }, [cancelColumnDragAnimations, persistColumnOrder, showToast]);
+
   const downloadsActions: DownloadsViewActions = {
-    onResetColumnLayout: () => {
-      if (columnDragSettleTimerRef.current !== null) {
-        window.clearTimeout(columnDragSettleTimerRef.current);
-        columnDragSettleTimerRef.current = null;
-      }
-      cancelColumnDragAnimations();
-      if (columnDragSessionRef.current) {
-        clearDownloadColumnDrag(columnDragSessionRef.current);
-        columnDragSessionRef.current = null;
-      }
-      setColumnOrder(DEFAULT_COLUMN_ORDER);
-      persistColumnOrder(DEFAULT_COLUMN_ORDER);
-      showToast("Spaltenlayout zurückgesetzt", 1800);
-    },
+    onResetColumnLayout: resetColumnLayout,
     onDisplayModeChange: setDownloadDisplayMode,
     onFilterChange: setDownloadFilter,
     onProviderFilterChange: setDownloadProviderFilter,
@@ -6449,7 +6451,7 @@ export function App(): ReactElement {
           x={colHeaderCtx.x}
           y={colHeaderCtx.y}
         >
-          {ALL_COLUMN_KEYS.map((col) => {
+          {ALL_COLUMN_KEYS.map((col) => {
             const def = COLUMN_DEFS[col];
             if (!def) return null;
             const isVisible = columnOrder.includes(col);
@@ -6482,8 +6484,13 @@ export function App(): ReactElement {
               >
                 {isVisible ? "\u2713 " : "\u2003 "}{def.label}
               </button>
-            );
-          })}
+            );
+          })}
+          <div className="ctx-menu-sep" />
+          <button className="ctx-menu-item" onClick={() => {
+            resetColumnLayout();
+            setColHeaderCtx(null);
+          }}>Spaltenlayout zurücksetzen</button>
         </ContextMenu>
         ) : null}
         historyContextMenu={historyCtxMenu ? (() => {

tests/app-shell.test.tsx

@@ -85,12 +85,17 @@ describe("desktop shell", () => {
 
   it("resets the download columns immediately and persists the default order", () => {
     const source = readFileSync(new URL("../src/renderer/App.tsx", import.meta.url), "utf8");
+    const reset = source.slice(source.indexOf("const resetColumnLayout"), source.indexOf("const downloadsActions"));
     const actions = source.slice(source.indexOf("const downloadsActions"), source.indexOf("const statisticsActions"));
+    const menu = source.slice(source.indexOf("columnContextMenu={"), source.indexOf("historyContextMenu={"));
 
-    expect(actions).toContain("onResetColumnLayout");
-    expect(actions).toContain("setColumnOrder(DEFAULT_COLUMN_ORDER)");
-    expect(actions).toContain("persistColumnOrder(DEFAULT_COLUMN_ORDER)");
-    expect(actions).toContain('showToast("Spaltenlayout zurückgesetzt"');
+    expect(reset).toContain("setColumnOrder(DEFAULT_COLUMN_ORDER)");
+    expect(reset).toContain("persistColumnOrder(DEFAULT_COLUMN_ORDER)");
+    expect(reset).toContain('showToast("Spaltenlayout zurückgesetzt"');
+    expect(actions).toContain("onResetColumnLayout: resetColumnLayout");
+    expect(menu).toContain("Spaltenlayout zurücksetzen");
+    expect(menu).toContain("resetColumnLayout()");
+    expect(menu).toContain("setColHeaderCtx(null)");
   });
 
   it("keeps application menus mounted for animated opening and closing", () => {