feat(design): the download, notification and Scheduler action lists (C1) — the rows' "…", the band's and the strip's "…" (E28 S3e3)

A download row keeps play (pause / resume / retry in the queue) and the save link; the editors,
sharing, re-download, the copies and cancel / delete / remove moved into its "…"
(useDownloadActions). A link inside the row keeps the browser's own right-click menu. A
notification row keeps its link and its unread mark and shows its dismiss on hover; an activity
notice's Find in feed and Undo are in its "…". The inbox band keeps Mark all read and puts Clear
everything, now behind a confirm, in its "…". The Scheduler strip keeps Run all and Pause and puts
Purge discovery in its "…". Polled lists key their menus by id (keyOf). ui/menuGroups draws a
rule only between two non-empty groups. Find in feed also drops the tag, search and age filters
that could hide the video it looks for.

frontend/src/components/Scheduler.tsx

@@ -31,6 +31,10 @@ import { Pressable } from "./ui/Pressable";
 import { Input } from "./ui/Input";
 import { SURFACE } from "./ui/surfaces";
 import { SectionLabel } from "./ui/Headings";
+import { useContextMenu } from "./ui/useContextMenu";
+import { ContextMenu } from "./ui/ContextMenu";
+import { MoreButton } from "./ui/MoreButton";
+import { type ActionMenuItem } from "./ui/ActionMenu";
 
 const POLL_MS = 4000;
 // While any job is running, poll faster so short scheduled runs aren't missed between ticks.
@@ -487,6 +491,10 @@ export default function Scheduler() {
     },
   });
 
+  // The page's own menu: the status strip's "…" (E28 C1). Run all and Pause stay in sight; the
+  // destructive Purge discovery lives only here, behind its confirm.
+  const pageMenu = useContextMenu<"scheduler">();
+
   if (q.isError && !data)
     return (
       <StateMessage tone="error" onRetry={() => q.refetch()}>
@@ -496,6 +504,45 @@ export default function Scheduler() {
   if (q.isLoading && !data) return <LoadingState label={t("scheduler.loading")} />;
   if (!data) return <div className="p-8 text-muted">{t("common.somethingWrong")}</div>;
 
+  async function purge() {
+    const ok = await confirm({
+      title: t("scheduler.purgeConfirmTitle"),
+      message: t("scheduler.purgeDiscoveryHint"),
+      confirmLabel: t("scheduler.purgeDiscovery"),
+      danger: true,
+    });
+    if (ok) purgeMut.mutate();
+  }
+  const paused = data.paused;
+  const pageItems: ActionMenuItem[] = [
+    {
+      id: "run-all",
+      label: t("scheduler.runAll"),
+      icon: <Play className="w-4 h-4" />,
+      disabled: paused || runAllMut.isPending,
+      note: paused ? t("scheduler.runAllPausedHint") : undefined,
+      onSelect: () => runAllMut.mutate(),
+    },
+    {
+      id: "pause",
+      label: paused ? t("scheduler.resume") : t("scheduler.pause"),
+      title: t("scheduler.pauseHint"),
+      icon: paused ? <Play className="w-4 h-4" /> : <Pause className="w-4 h-4" />,
+      disabled: pauseResume.isPending,
+      onSelect: () => pauseResume.mutate(paused),
+    },
+    {
+      id: "purge",
+      label: t("scheduler.purgeDiscovery"),
+      title: t("scheduler.purgeDiscoveryHint"),
+      icon: <Trash2 className="w-4 h-4" />,
+      danger: true,
+      separatorBefore: true,
+      disabled: purgeMut.isPending,
+      onSelect: () => void purge(),
+    },
+  ];
+
   const quotaPct = data.quota.daily_budget
     ? Math.min(100, Math.round((data.quota.used_today / data.quota.daily_budget) * 100))
     : 0;
@@ -539,25 +586,6 @@ export default function Scheduler() {
             {t("scheduler.runAll")}
           </Button>
         </Tooltip>
-        <Tooltip hint={t("scheduler.purgeDiscoveryHint")}>
-          <Button
-            variant="glass"
-            size="sm"
-            onClick={async () => {
-              const ok = await confirm({
-                title: t("scheduler.purgeConfirmTitle"),
-                message: t("scheduler.purgeDiscoveryHint"),
-                confirmLabel: t("scheduler.purgeDiscovery"),
-                danger: true,
-              });
-              if (ok) purgeMut.mutate();
-            }}
-            disabled={purgeMut.isPending}
-          >
-            <Trash2 className="w-4 h-4" />
-            {t("scheduler.purgeDiscovery")}
-          </Button>
-        </Tooltip>
         <Tooltip hint={t("scheduler.pauseHint")}>
           <Button
             variant="glass"
@@ -569,6 +597,13 @@ export default function Scheduler() {
             {data.paused ? t("scheduler.resume") : t("scheduler.pause")}
           </Button>
         </Tooltip>
+        <MoreButton
+          label={t("scheduler.menu")}
+          variant="glass"
+          expanded={pageMenu.open}
+          menuProps={pageMenu.buttonProps("scheduler")}
+        />
+        <ContextMenu menu={pageMenu} ariaLabel={t("scheduler.menu")} items={pageItems} />
       </div>
 
       {!data.running_here && (