fix(keys): epic-end review round 3 — the part-way clip count shows, busy buttons keep focus, cards say their names

Targeted round over 3cd0c525's fix surfaces: 14 raised, 14 fixed.

- VideoEditor: the "only X of Y clips" toast went silent exactly on the job-cap/quota refusal it was
  written for (req had already reported the error); it now always shows. The cut list holds still while
  Create queues, and a retry continues the "(i/N)" series.
- ChannelPage: Subscribe/Unsubscribe use Button `loading`, "Load more" and ChannelDiscovery's Subscribe
  block the click with aria-disabled instead of native disabled; busy Block/Hide no longer light up on
  hover.
- listNav: an item can name itself (`navItemAttrs(i, name)`) — Plex posters, seasons, episodes, message
  rows and download rows pass their title; focus on a toast's Undo keeps the removed card's slot.
- AnchoredPopover: the hand-back only for focus-managed surfaces (a hover card no longer pulls focus
  back); the dead panel-ref check is gone.
- AccountPanel: no confirmation mail offered to the demo account; send_failed copy no longer blames
  the message for an unreachable server. Pager comment points at scrollParent.

frontend/src/components/AccountPanel.tsx

@@ -196,7 +196,9 @@ export default function AccountPanel({
 
             <button
               onClick={() => resend.mutate()}
-              disabled={!a.email_configured || a.email_verified || resend.isPending}
+              // The demo account's address is never confirmed, and the server refuses to mail it — as
+              // it refuses it a set-password link below (deep-review E11 round 3).
+              disabled={user.is_demo || !a.email_configured || a.email_verified || resend.isPending}
               className="w-full glass-card glass-hover flex items-center gap-2 px-3 py-2.5 rounded-lg text-xs disabled:opacity-45 transition"
             >
               <Send className="w-4 h-4 shrink-0" />

frontend/src/components/ChannelDiscovery.tsx

@@ -108,9 +108,13 @@ export default function ChannelDiscovery({
           }
         >
           <button
-            onClick={() => onSubscribe(c)}
-            disabled={!canWrite || subscribe.isPending}
-            className="glass-card glass-hover inline-flex items-center gap-1.5 px-2.5 py-1.5 rounded-lg text-xs disabled:opacity-50 transition"
+            // Busy blocks the click, not the focus: a focused button that turns natively `disabled`
+            // drops the keyboard to <body> (the rule and its measurement: ui/Button).
+            onClick={() => !subscribe.isPending && onSubscribe(c)}
+            disabled={!canWrite}
+            aria-disabled={subscribe.isPending || undefined}
+            aria-busy={subscribe.isPending || undefined}
+            className="glass-card glass-hover inline-flex items-center gap-1.5 px-2.5 py-1.5 rounded-lg text-xs disabled:opacity-50 aria-disabled:opacity-50 transition"
           >
             <UserPlus className="w-3.5 h-3.5" />
             {t("channels.discovery.subscribe")}

frontend/src/components/ChannelPage.busyFocus.dom.test.tsx

@@ -1,6 +1,7 @@
 // @vitest-environment jsdom
 //
-// The channel page's Block and Hide toggles while their request runs (deep-review E11 round 2). A
+// The channel page's Block and Hide toggles (deep-review E11 round 2) and its Subscribe / Unsubscribe
+// button (round 3: the same row, missed) while their request runs. A
 // focused button that turns natively `disabled` drops the keyboard to <body> in Chrome (measured for
 // ui/Button in E11 S2), so a busy toggle blocks the click with aria-disabled instead — focusable, and
 // still pressed only once.
@@ -52,13 +53,17 @@ const CH = "UCsXVk37bltHxD1rDPwtNM8Q";
 
 describe("ChannelPage — a busy toggle keeps the keyboard", () => {
   it.each([
-    ["channel.block", "blockChannel"],
-    ["channel.hide", "updateChannel"],
-  ] as const)("%s stays focusable and fires once while its request runs", async (label, call) => {
+    ["channel.block", "blockChannel", true],
+    ["channel.hide", "updateChannel", true],
+    ["channel.subscribe", "subscribeChannel", false],
+    ["channel.subscribedState", "unsubscribeChannel", true],
+  ] as const)(
+    "%s stays focusable and fires once while its request runs",
+    async (label, call, subscribed) => {
       vi.spyOn(api, "channelDetail").mockResolvedValue({
         id: CH,
         title: "LEMMiNO",
-      subscribed: true,
+        subscribed,
         blocked: false,
         hidden: false,
         deep_requested: false,
@@ -89,5 +94,6 @@ describe("ChannelPage — a busy toggle keeps the keyboard", () => {
       expect(document.activeElement).toBe(button);
       fireEvent.click(button);
       expect(pending).toHaveBeenCalledTimes(1);
-  });
+    },
+  );
 });

frontend/src/components/ChannelPage.tsx

@@ -481,14 +481,16 @@ export default function ChannelPage({
                 <button
                   // Busy blocks the click, not the focus: a focused button that turns natively
                   // `disabled` drops the keyboard to <body> (the rule and its measurement: ui/Button).
+                  // Nor does a busy toggle light up on hover, as if a click would do something.
                   onClick={() => !block.isPending && block.mutate()}
                   aria-disabled={block.isPending || undefined}
+                  aria-busy={block.isPending || undefined}
                   title={ch?.blocked ? t("channel.unblock") : t("channel.block")}
                   aria-label={ch?.blocked ? t("channel.unblock") : t("channel.block")}
                   className={`inline-flex items-center justify-center w-9 h-9 rounded-lg border aria-disabled:opacity-50 transition ${
                     ch?.blocked
                       ? "border-danger text-danger"
-                      : "border-border text-muted hover:text-danger hover:border-danger"
+                      : "border-border text-muted not-aria-disabled:hover:text-danger not-aria-disabled:hover:border-danger"
                   }`}
                 >
                   <Ban className="w-4 h-4" />
@@ -501,12 +503,13 @@ export default function ChannelPage({
                 <button
                   onClick={() => !toggleHidden.isPending && toggleHidden.mutate()}
                   aria-disabled={toggleHidden.isPending || undefined}
+                  aria-busy={toggleHidden.isPending || undefined}
                   title={ch.hidden ? t("channel.hiddenHint") : t("channel.hideHint")}
                   aria-label={ch.hidden ? t("channel.unhide") : t("channel.hide")}
                   className={`inline-flex items-center justify-center w-9 h-9 rounded-lg border aria-disabled:opacity-50 transition ${
                     ch.hidden
                       ? "border-accent text-accent"
-                      : "border-border text-muted hover:text-fg hover:border-fg/40"
+                      : "border-border text-muted not-aria-disabled:hover:text-fg not-aria-disabled:hover:border-fg/40"
                   }`}
                 >
                   {ch.hidden ? <EyeOff className="w-4 h-4" /> : <Eye className="w-4 h-4" />}
@@ -518,7 +521,7 @@ export default function ChannelPage({
                   <Button
                     variant="outline"
                     onClick={onUnsubscribe}
-                    disabled={unsubscribe.isPending}
+                    loading={unsubscribe.isPending}
                     title={t("channel.unsubscribe")}
                     icon={<Check className="w-4 h-4" />}
                   >
@@ -528,7 +531,7 @@ export default function ChannelPage({
                   <Button
                     variant="outline"
                     onClick={() => subscribe.mutate()}
-                    disabled={subscribe.isPending}
+                    loading={subscribe.isPending}
                     icon={<Plus className="w-4 h-4" />}
                   >
                     {t("channel.subscribe")}
@@ -575,9 +578,11 @@ export default function ChannelPage({
             {!ch?.subscribed && nextToken && (
               <div className="flex justify-center pb-6">
                 <button
-                  onClick={() => runExplore(nextToken)}
-                  disabled={exploring}
-                  className="inline-flex items-center gap-2 px-4 py-2 rounded-lg text-sm border border-border hover:bg-surface disabled:opacity-50"
+                  // Busy blocks the click, not the focus (see Block above).
+                  onClick={() => !exploring && runExplore(nextToken)}
+                  aria-disabled={exploring || undefined}
+                  aria-busy={exploring || undefined}
+                  className="inline-flex items-center gap-2 px-4 py-2 rounded-lg text-sm border border-border not-aria-disabled:hover:bg-surface aria-disabled:opacity-50"
                 >
                   {exploring ? (
                     <Loader2 className="w-4 h-4 animate-spin" />

frontend/src/components/Messages.tsx

@@ -150,7 +150,7 @@ function ConversationList({
             return (
               <div
                 key={c.partner.id}
-                {...navItemAttrs(i)}
+                {...navItemAttrs(i, c.partner.name)}
                 className="group flex items-center gap-1 rounded-xl hover:bg-card transition"
               >
                 <button

frontend/src/components/VideoEditor.partial.dom.test.tsx

@@ -1,11 +1,12 @@
 // @vitest-environment jsdom
 //
-// A split export that fails part-way (deep-review E11 round 2). Every clip is its own job, committed as
-// it goes, so a failure at clip 2 of 2 (the job cap) left clip 1 queued while the editor reported a
-// plain failure and kept both selected — and trying again queued clip 1 a second time. It now says how
-// many made it and deselects them, so another try adds only the rest.
+// A split export that fails part-way (deep-review E11 rounds 2 and 3). Every clip is its own job,
+// committed as it goes, so a failure at clip 2 of 2 (the job cap) left clip 1 queued while the editor
+// reported a plain failure and kept both selected — and trying again queued clip 1 a second time. It
+// now says how many made it (also when `req` has already shown the refusal in its dialog), deselects
+// them, holds the cut list still while it queues, and a retry goes on with the same "(i/N)" series.
 import { describe, it, expect, vi, beforeAll, afterEach } from "vitest";
-import { render, screen, fireEvent, waitFor, cleanup } from "@testing-library/react";
+import { render, screen, fireEvent, waitFor, cleanup, act } from "@testing-library/react";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 
 vi.mock("react-i18next", async (importOriginal) => ({
@@ -20,6 +21,7 @@ vi.mock("../lib/notifications", async (importOriginal) => ({
 
 import VideoEditor from "./VideoEditor";
 import { api, HttpError, type DownloadJob } from "../lib/api";
+import { markReported } from "../lib/api/core";
 
 beforeAll(() => {
   class Stub {
@@ -48,10 +50,16 @@ const job = {
 describe("VideoEditor — a split export that fails part-way", () => {
   it("says how many clips made it, and a retry queues only the rest", async () => {
     vi.spyOn(api, "downloadStoryboard").mockResolvedValue({ available: false } as never);
+    let refuse: (e: unknown) => void = () => {};
     const enqueue = vi
       .spyOn(api, "enqueueEdit")
       .mockResolvedValueOnce({} as never)
-      .mockRejectedValueOnce(new HttpError(422, "errors.generic", { code: "quota" }))
+      .mockImplementationOnce(
+        () =>
+          new Promise((_, reject) => {
+            refuse = reject;
+          }) as never,
+      )
       .mockResolvedValue({} as never);
     render(
       <QueryClientProvider client={new QueryClient()}>
@@ -59,23 +67,37 @@ describe("VideoEditor — a split export that fails part-way", () => {
       </QueryClientProvider>,
     );
 
-    // Split at 50 s: the playhead is where the video element says it is.
+    // The playhead is where the video element says it is.
     const video = document.querySelector("video")!;
-    Object.defineProperty(video, "currentTime", { value: 50, configurable: true, writable: true });
+    const playhead = (s: number) => {
+      Object.defineProperty(video, "currentTime", { value: s, configurable: true, writable: true });
       fireEvent.timeUpdate(video);
+    };
+    playhead(50);
     fireEvent.click(screen.getByText("editor.splitHere"));
 
     fireEvent.click(screen.getByText("editor.createN"));
+    await waitFor(() => expect(enqueue).toHaveBeenCalledTimes(2));
+    // While the clips are queued the cut list holds still: a split now would be a range never queued.
+    playhead(75);
+    fireEvent.click(screen.getByText("editor.splitHere"));
+
+    // The job cap, as `req` delivers it: already shown in the error dialog, and marked reported.
+    const refused = new HttpError(422, "errors.generic", { code: "quota" });
+    markReported(refused);
+    await act(async () => refuse(refused));
     await waitFor(() =>
       expect(notify).toHaveBeenCalledWith(
         expect.objectContaining({ level: "error", title: "editor.partlyCreated" }),
       ),
     );
-    expect(enqueue).toHaveBeenCalledTimes(2);
+    expect(enqueue.mock.calls[0]![0].display_name).toBe("Talk (1/2)");
 
-    // The queued first clip is deselected: one clip left to create, and only it is sent again.
+    // The queued first clip is deselected: one clip left to create, and only it is sent again — as
+    // the second of the same two.
     fireEvent.click(screen.getByText("editor.create"));
     await waitFor(() => expect(enqueue).toHaveBeenCalledTimes(3));
     expect(enqueue.mock.calls[2]![0].edit_spec.trim).toEqual({ start_s: 50, end_s: 100 });
+    expect(enqueue.mock.calls[2]![0].display_name).toBe("Talk (2/2)");
   });
 });

frontend/src/components/VideoEditor.tsx

@@ -10,7 +10,8 @@ import { api, type DownloadJob, type EditSpec } from "../lib/api";
 import { contentRect, cropToSourcePx, type Frac } from "../lib/cropGeometry";
 import { inputCls, btnCls } from "./ui/form";
 import { Button } from "./ui/Button";
-import { notifyActionError } from "../lib/actionErrors";
+import { failureReason, notifyActionError } from "../lib/actionErrors";
+import { markReported } from "../lib/api/core";
 
 // mm:ss.d timecode <-> seconds.
 function tc(s: number): string {
@@ -60,6 +61,13 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
 
   // The cut-list: contiguous segments covering [0, duration]. Starts as the whole video, kept.
   const [segments, setSegments] = useState<Seg[]>([{ id: 0, start: 0, end: srcDur, keep: true }]);
+  // Set while Create queues its clips. A part-way failure deselects the clips it queued by the ids
+  // Create started with, so the cut list holds still until it is done: a split or a merge in between
+  // would deselect a range that was never queued, or keep one that was (deep-review E11 round 3).
+  const creating = useRef(false);
+  // The "(i/N)" each clip of the last Create was named with, by segment id: a retry after a part-way
+  // failure goes on with that series instead of renumbering what is left ("(1/2)" beside "(1/4)").
+  const series = useRef<Map<number, string> | null>(null);
   const [selId, setSelId] = useState(0);
   const [output, setOutput] = useState<"separate" | "join">("separate");
   const [cropOn, setCropOn] = useState(false);
@@ -135,6 +143,7 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
   // --- cut-list mutations ---
   const boundaries = useMemo(() => segments.slice(0, -1).map((s) => s.end), [segments]);
   const splitAtPlayhead = () => {
+    if (creating.current) return;
     const time = current;
     setSegments((segs) => {
       const i = segs.findIndex((s) => time > s.start + MIN_SEG && time < s.end - MIN_SEG);
@@ -147,7 +156,7 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
   };
   const moveBoundary = (bi: number, time: number) =>
     setSegments((segs) => {
-      if (bi < 0 || bi >= segs.length - 1) return segs;
+      if (creating.current || bi < 0 || bi >= segs.length - 1) return segs;
       // bi is in [0, length-2] here, so bi and bi+1 both index existing segments.
       const lo = segs[bi]!.start + MIN_SEG;
       const hi = segs[bi + 1]!.end - MIN_SEG;
@@ -159,12 +168,14 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
     });
   const deleteBoundary = (bi: number) =>
     setSegments((segs) => {
-      if (segs.length < 2) return segs;
+      if (creating.current || segs.length < 2) return segs;
       const merged = { ...segs[bi]!, end: segs[bi + 1]!.end };
       return [...segs.slice(0, bi), merged, ...segs.slice(bi + 2)];
     });
   const toggleKeep = (id: number) =>
-    setSegments((segs) => segs.map((s) => (s.id === id ? { ...s, keep: !s.keep } : s)));
+    setSegments((segs) =>
+      creating.current ? segs : segs.map((s) => (s.id === id ? { ...s, keep: !s.keep } : s)),
+    );
 
   // --- timeline drag (seek / boundary) + hover preview ---
   const [drag, setDrag] = useState<Drag | null>(null);
@@ -291,6 +302,7 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
 
   const create = useMutation({
     mutationFn: async () => {
+      creating.current = true;
       const cp = cropPx();
       const base = name.trim() || defaultName;
       if (willJoin) {
@@ -307,6 +319,12 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
         return { files: 1 };
       }
       const N = kept.length;
+      const prev = series.current;
+      const suffix =
+        prev && kept.every((s) => prev.has(s.id))
+          ? prev
+          : new Map(kept.map((s, i) => [s.id, N > 1 ? ` (${i + 1}/${N})` : ""]));
+      series.current = suffix;
       const done: number[] = [];
       try {
         for (let i = 0; i < N; i++) {
@@ -316,7 +334,7 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
           };
           if (cp) spec.crop = cp;
           else spec.accurate = accurate;
-          const dn = N > 1 ? `${base} (${i + 1}/${N})` : name.trim() || undefined;
+          const dn = suffix.get(s.id) ? `${base}${suffix.get(s.id)}` : name.trim() || undefined;
           await api.enqueueEdit({ source_job_id: job.id, edit_spec: spec, display_name: dn });
           done.push(s.id);
         }
@@ -329,7 +347,15 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
           qc.invalidateQueries({ queryKey: qk.downloads() });
           qc.invalidateQueries({ queryKey: qk.downloadUsage() });
           setSegments((segs) => segs.map((s) => (done.includes(s.id) ? { ...s, keep: false } : s)));
-          notifyActionError(e, t("editor.partlyCreated", { done: done.length, total: N }));
+          // Its own toast, not notifyActionError: a quota or edit refusal has already opened req's
+          // error dialog and marked the error, so that helper would say nothing — and the count is
+          // what the dialog does not tell (deep-review E11 round 3).
+          notify({
+            level: "error",
+            title: t("editor.partlyCreated", { done: done.length, total: N }),
+            message: failureReason(e),
+          });
+          markReported(e);
         }
         throw e;
       }
@@ -342,6 +368,9 @@ export default function VideoEditor({ job, onClose }: { job: DownloadJob; onClos
       onClose();
     },
     onError: (e) => notifyActionError(e, t("editor.failed")),
+    onSettled: () => {
+      creating.current = false;
+    },
   });
 
   const sel = segments.find((s) => s.id === selId) ?? segments[0];

frontend/src/components/accountPanel.dom.test.tsx

@@ -63,12 +63,12 @@ const user = {
   is_suspended: false,
 };
 
-function mount() {
+function mount(u: typeof user = user) {
   const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
   render(
     <QueryClientProvider client={qc}>
       {/* eslint-disable-next-line @typescript-eslint/no-explicit-any */}
-      <AccountPanel user={user as any} onClose={() => {}} />
+      <AccountPanel user={u as any} onClose={() => {}} />
     </QueryClientProvider>,
   );
 }
@@ -148,3 +148,15 @@ describe("the account panel reports a refused recovery action", () => {
     await waitFor(() => expect(errorMessages()).toContain("users.pendingAccess.activateFailed"));
   });
 });
+
+describe("the account panel on the demo account", () => {
+  // The demo account's address is never confirmed, so "send the confirmation link again" looked
+  // available — and the server refused it as "nothing left to confirm", beside a row reading
+  // "unconfirmed" (deep-review E11 round 3).
+  it("does not offer it a confirmation mail, which the server refuses", async () => {
+    mount({ ...user, is_demo: true });
+    await screen.findByText("users.account.recovery");
+    const resend = screen.getByText("users.account.resend").closest("button")!;
+    expect(resend.hasAttribute("disabled")).toBe(true);
+  });
+});

frontend/src/components/downloadRow.tsx

@@ -219,7 +219,7 @@ export function DownloadRow({
   const running = job.status === "running";
   return (
     <div
-      {...(navIndex !== undefined && navItemAttrs(navIndex))}
+      {...(navIndex !== undefined && navItemAttrs(navIndex, jobTitle(job)))}
       className="flex gap-3 p-2.5 rounded-xl glass-card glass-hover transition"
     >
       <Thumb job={job} />

frontend/src/components/plexCards.tsx

@@ -79,7 +79,7 @@ export function PlexPosterCard({
     <div
       className="group text-left"
       {...menuProps?.(card)}
-      {...(navIndex !== undefined && navItemAttrs(navIndex))}
+      {...(navIndex !== undefined && navItemAttrs(navIndex, card.title))}
       // content-visibility keeps off-screen posters cheap to render (smoother long-list scroll).
       style={{ contentVisibility: "auto", containIntrinsicSize: "auto 300px" } as CSSProperties}
     >
@@ -262,7 +262,10 @@ export function SeasonCard({
     ? t("plex.series.markSeasonUnwatched")
     : t("plex.series.markSeasonWatched");
   return (
-    <div className="group text-left" {...(navIndex !== undefined && navItemAttrs(navIndex))}>
+    <div
+      className="group text-left"
+      {...(navIndex !== undefined && navItemAttrs(navIndex, se.title))}
+    >
       <div
         onClick={onOpen}
         role="button"
@@ -491,7 +494,7 @@ export function EpisodeCard({
       ? Math.min(100, Math.round(((ep.position_seconds ?? 0) / ep.duration_seconds) * 100))
       : 0;
   return (
-    <div className="group" {...(navIndex !== undefined && navItemAttrs(navIndex))}>
+    <div className="group" {...(navIndex !== undefined && navItemAttrs(navIndex, ep.title))}>
       <div
         onClick={onPlay}
         role="button"

frontend/src/components/ui/AnchoredPopover.returnFocus.dom.test.tsx

@@ -0,0 +1,60 @@
+// @vitest-environment jsdom
+//
+// Which surfaces give the focus back to a card focused as a whole (deep-review E11 rounds 2 and 3). A
+// menu does, by hand — floating-ui's own return would land on the card's first link (see
+// ContextMenu.dom.test). A hover card never returned focus, and one closing after the reader clicked a
+// link in it must not pull the focus back to the card under it.
+import { describe, it, expect, beforeAll, afterEach } from "vitest";
+import { render, screen, cleanup, act } from "@testing-library/react";
+import { FloatingTree } from "@floating-ui/react";
+import { useAnchoredPopover, PopoverSurface } from "./AnchoredPopover";
+
+beforeAll(() => {
+  class Stub {
+    observe() {}
+    unobserve() {}
+    disconnect() {}
+    takeRecords() {
+      return [];
+    }
+  }
+  globalThis.ResizeObserver ??= Stub as unknown as typeof ResizeObserver;
+  globalThis.IntersectionObserver ??= Stub as unknown as typeof IntersectionObserver;
+});
+
+afterEach(cleanup);
+
+function Card({ open }: { open: boolean }) {
+  const pop = useAnchoredPopover({ open, onOpenChange: () => {}, mode: "hover" });
+  return (
+    <>
+      <div tabIndex={-1} data-testid="card" ref={pop.refs.setReference}>
+        card
+      </div>
+      <PopoverSurface popover={pop}>
+        <a href="#more" data-testid="link">
+          more
+        </a>
+      </PopoverSurface>
+    </>
+  );
+}
+
+const page = (open: boolean) => (
+  <FloatingTree>
+    <Card open={open} />
+  </FloatingTree>
+);
+
+describe("AnchoredPopover · a hover card closing", () => {
+  it("does not hand the focus back to the card it was opened over", async () => {
+    const { rerender } = render(page(false));
+    const card = screen.getByTestId("card");
+    act(() => card.focus());
+    rerender(page(true));
+    act(() => screen.getByTestId("link").focus());
+    rerender(page(false));
+    await act(async () => {}); // the hand-back runs in a microtask
+    expect(document.activeElement).not.toBe(card);
+  });
+});

frontend/src/components/ui/AnchoredPopover.tsx

@@ -601,6 +601,11 @@ function PopoverSurfaceInner({
   // in the accessible-name computation — so an explicit ariaLabel is dead unless we drop the ref.
   if (ariaLabel) delete floatingProps["aria-labelledby"];
 
+  // A menu/listbox/dialog traps focus into the surface (and returns it on close). A hover card is
+  // passive, and a COMBOBOX must leave focus in the input (its list is navigated virtually) — neither
+  // is focus-managed.
+  const managed = focusManaged ?? (mode !== "hover" && !isCombobox);
+
   // Where focus goes back on close. floating-ui returns it to the element focused before the open —
   // but when that element is not a Tab stop itself, to its first TABBABLE descendant instead, even
   // when handed the element as a ref (its return runs through `getFirstTabbableElement` either way).
@@ -611,36 +616,35 @@ function PopoverSurfaceInner({
   // panel, and only when the focus was still in a floating layer (or nowhere) as the panel closed:
   // focus the reader moved on to stays where they put it. A menu row's action runs a task later
   // (`closeThenAct`), so a dialog it opens still captures the card as the element to return to.
+  //
+  // Only for a focus-managed surface, whose return this replaces: a hover card or a combobox never
+  // returned focus, and a hover card closing after the reader clicked a link in it must not pull the
+  // focus back to the card under it (deep-review E11 round 3).
   const [returnTo] = useState(() => {
     const active = document.activeElement;
-    return active instanceof HTMLElement && active !== document.body && active.tabIndex < 0
+    return managed &&
+      active instanceof HTMLElement &&
+      active !== document.body &&
+      active.tabIndex < 0
       ? active
       : null;
   });
-  const floatingRef = refs.floating;
   useLayoutEffect(() => {
     if (!returnTo) return;
-    // Read once here: the panel's ref is attached before layout effects run, and cleared by the time
-    // this cleanup does.
-    const floating = floatingRef.current;
     return () => {
+      // "Still in the layer" is read off the portal marker, not the panel: FloatingPortal renders the
+      // panel a commit after this surface mounts, so the panel's ref is still empty when this effect
+      // runs (deep-review E11 round 3).
       const active = document.activeElement;
       const stillOurs =
-        !active ||
-        active === document.body ||
-        !!floating?.contains(active) ||
-        !!active.closest("[data-floating-ui-portal]");
+        !active || active === document.body || !!active.closest("[data-floating-ui-portal]");
       queueMicrotask(() => {
         if (stillOurs && returnTo.isConnected) returnTo.focus({ preventScroll: true });
       });
     };
-  }, [returnTo, floatingRef]);
+  }, [returnTo]);
 
   const zClass = mode === "hover" ? "z-tooltip" : "z-popover";
-  // A menu/listbox/dialog traps focus into the surface (and returns it on close). A hover card is
-  // passive, and a COMBOBOX must leave focus in the input (its list is navigated virtually) — neither
-  // is focus-managed.
-  const managed = focusManaged ?? (mode !== "hover" && !isCombobox);
 
   const surface = (
     <div

frontend/src/components/ui/Pager.tsx

@@ -49,7 +49,7 @@ export default function Pager({
   // Turning the page — or resizing it, which re-slices from a different first item — swaps the whole
   // list, so put the reader at its top; landing mid-list in a page you haven't seen is disorienting.
   // The page scroller is the app's <main> (PageScroller documents itself as the ONE scroller; the
-  // same implicit contract BackToTop and VirtualGrid's getScrollParent already rely on).
+  // same implicit contract BackToTop and lib/listPaging's scrollParent (VirtualGrid, listNav) already rely on).
   function scrollListToTop() {
     document.querySelector("main")?.scrollTo({ top: 0 });
   }

frontend/src/components/ui/Toaster.tsx

@@ -125,6 +125,8 @@ export default function Toaster({
     // as a toast was up (the connection notice: until the server answered). The same rung UpNextCard
     // uses for the same reason. Clicks between the cards go through to what is underneath.
     <div
+      // lib/listNav: focus on a toast's Undo is not the reader leaving the list the toast is about.
+      data-toast-region=""
       aria-live={isTop && armed ? "polite" : "off"}
       className={`absolute left-4 z-overlay flex flex-col gap-2 w-80 max-w-[calc(100vw-2rem)] ${
         overlay ? "bottom-24 pointer-events-none" : "bottom-4"

frontend/src/i18n/locales/en/errors.json

@@ -25,7 +25,7 @@
     "not_applicable": "This account has nothing left to confirm.",
     "not_approved": "Only an approved address can be invited.",
     "email_off": "No mail was sent: this instance has no working SMTP setup. Check Configuration → Email / SMTP.",
-    "send_failed": "The mail server didn't accept the message. Check Configuration → Email / SMTP, then try again.",
+    "send_failed": "The mail couldn't be sent: the mail server was unreachable, or it refused the login or the message. Check Configuration → Email / SMTP, then try again.",
     "demo": "The demo account is shared, so it can't get a set-password link."
   },
   "reason": {

frontend/src/i18n/locales/hu/errors.json

@@ -25,7 +25,7 @@
     "not_applicable": "Ezen a fiókon már nincs mit megerősíteni.",
     "not_approved": "Csak jóváhagyott címre küldhető meghívó.",
     "email_off": "Nem ment ki levél: ezen a példányon nincs működő SMTP. Nézd meg a Konfiguráció → E-mail / SMTP fület.",
-    "send_failed": "A levelezőszerver nem fogadta el a levelet. Nézd meg a Konfiguráció → E-mail / SMTP fület, majd próbáld újra.",
+    "send_failed": "Nem sikerült elküldeni a levelet: a levelezőszerver nem volt elérhető, vagy elutasította a belépést vagy a levelet. Nézd meg a Konfiguráció → E-mail / SMTP fület, majd próbáld újra.",
     "demo": "A bemutató fiók közös, ezért nem kaphat jelszóbeállító linket."
   },
   "reason": {

frontend/src/lib/listNav.dom.test.tsx

@@ -511,4 +511,54 @@ describe("useListNav · leaving the list, and naming the item (deep-review E11 r
     expect(a0.hasAttribute("aria-label")).toBe(false);
     expect(screen.getByTestId("a1").getAttribute("aria-label")).toBe("title");
   });
+
+  // A Plex poster's open element is the whole card — badges, title, year, rating and summary — and a
+  // season card's holds only the hover caption "Open show": named from that text, every season was
+  // "Open show" (deep-review E11 round 3). The item's own name wins.
+  it("names a card by the name its item gives, over the text of what it opens", () => {
+    function Posters() {
+      const ref = useRef<HTMLDivElement>(null);
+      useListNav(ref, { enabled: true });
+      return (
+        <div ref={ref}>
+          <div {...navItemAttrs(0, "Season 1")} data-testid="p0">
+            <div role="button" tabIndex={0} data-nav-open="">
+              Open show
+            </div>
+          </div>
+        </div>
+      );
+    }
+    render(<Posters />);
+    press("j");
+    expect(screen.getByTestId("p0").getAttribute("aria-label")).toBe("Season 1");
+  });
+
+  // Hide a card, then Undo in the toast that put up: focus on the toast's button is not the reader
+  // leaving the list, and `j` goes on from the card put back (deep-review E11 round 3).
+  it("keeps the slot when focus went to the Undo of a toast", () => {
+    withLayout(
+      (_, n) => ({ left: 0, top: n * 100 }),
+      () => {
+        const page = (ids: number[]) => (
+          <>
+            <div data-toast-region="">
+              <button data-testid="undo">undo</button>
+            </div>
+            <Swappable ids={ids} />
+          </>
+        );
+        const { rerender } = render(page([0, 1, 2, 3]));
+        press("j");
+        press("j");
+        press("j");
+        rerender(page([0, 1, 3]));
+        act(() => screen.getByTestId("undo").focus());
+        rerender(page([0, 1, 2, 3]));
+        act(() => screen.getByTestId("undo").blur());
+        press("j");
+        expect(focused()).toBe("r2");
+      },
+    );
+  });
 });

frontend/src/lib/listNav.ts

@@ -44,9 +44,16 @@ const LIST = "data-nav-list";
 // How long to wait for a virtualized item to mount after asking the list to reveal it.
 const REVEAL_FRAMES = 10;
 
-/** Spread onto an item's ROOT element. */
-export const navItemAttrs = (index: number): { "data-nav-index": number } => ({
+/** Spread onto an item's ROOT element. `name` is what a screen reader calls the item while the keyboard
+ *  is on it (its title) — pass it where the element Enter opens wraps the whole card (a Plex poster:
+ *  badges, year, rating and summary run together), shows a caption that is not the item's name, or
+ *  holds no text at all (deep-review E11 round 3). */
+export const navItemAttrs = (
+  index: number,
+  name?: string | null,
+): { "data-nav-index": number; "data-nav-name"?: string } => ({
   [INDEX]: index,
+  ...(name ? { "data-nav-name": name } : null),
 });
 
 const indexOf = (item: Element): number => Number(item.getAttribute(INDEX));
@@ -133,10 +140,11 @@ function onFocusIn(e: FocusEvent): void {
   if (item && list) last = { list, index: indexOf(item), el: item };
   // Focus went on to page content that is not an item — the search box, a filter chip: the reader
   // left the list, and whatever it shows next (new results) is not "the slot they were in" (deep-review
-  // E11 round 2). A layer opened FROM the item — its menu, a confirm — does not count: focus comes
-  // back from it, and what it did (a hidden card, a deleted row) is the removal the slot is kept for.
-  // Removing the focused node itself fires no focusin.
-  else if (!target?.closest?.('[data-floating-ui-portal], [role="dialog"]')) last = null;
+  // E11 round 2). A layer opened FROM the item — its menu, a confirm, the Undo toast its removal put
+  // up — does not count: focus comes back from it, and what it did (a hidden card, a deleted row, the
+  // card put back) is what the slot is kept for. Removing the focused node itself fires no focusin.
+  else if (!target?.closest?.('[data-floating-ui-portal], [role="dialog"], [data-toast-region]'))
+    last = null;
 }
 
 /** Where `j` (`k`: the item before) lands after the last-focused item left the DOM: the item now in
@@ -171,8 +179,15 @@ function focusItem(el: HTMLElement, reveal = true): void {
       // A card root is a plain <div>: focused, it has no role and no name, and a screen reader read it
       // as an unlabelled run of text. While it holds the focus it is a group named after what Enter
       // opens (deep-review E11 round 2). A row (<tr>) keeps its own role.
+      // The item's own name when it gives one (`navItemAttrs`), else the open element's label or text:
+      // a title link's text is the title (deep-review E11 round 3).
       const open = el.querySelector("[data-nav-open]");
-      const name = (open?.getAttribute("aria-label") || open?.textContent || "").trim();
+      const name = (
+        el.getAttribute("data-nav-name") ||
+        open?.getAttribute("aria-label") ||
+        open?.textContent ||
+        ""
+      ).trim();
       if (
         el.tagName === "DIV" &&
         name &&