feat(feed): move the Mine/Library scope toggle beside the header search box

The scope toggle used to sit at the top of the filter rail, which is buried when
the rail is collapsed/unpinned. Relocate it to the header, just right of the feed
search box — mirroring Plex's scope toggle placement — so the primary 'what am I
browsing' control is always visible.

New FeedScopeToggle adapter (SegmentedToggle over filters.scope, same as the Plex
one over its scope); rendered in Header on the feed page between the search box and
the sync chip. Removed the toggle from the Sidebar rail's now-unused `top` slot and
dropped the dead `top` prop from FilterRail. Same filters.scope field, so behaviour
is unchanged.

Verified live: the toggle sits beside the feed search and switches scope; the rail
no longer carries it.

frontend/src/components/FeedScopeToggle.tsx

@@ -0,0 +1,39 @@
+import { useTranslation } from "react-i18next";
+import { Library, User } from "lucide-react";
+import SegmentedToggle from "./SegmentedToggle";
+import { useFeedFilters, useFeedFiltersActions } from "./FeedFiltersProvider";
+
+// The feed's Mine/Library scope, relocated from the filter sidebar to sit just right of the header
+// search box — mirroring PlexScopeToggle's placement, so the primary "what am I browsing" control is
+// always in reach instead of buried in the (possibly collapsed) filter rail. Same `filters.scope`
+// field, so behaviour is unchanged. The `pointer-events-auto`/`shrink-0` wrapper matches the other
+// header pills: the header band is `pointer-events-none`, and the pill must not collapse in the flex row.
+export default function FeedScopeToggle() {
+  const { t } = useTranslation();
+  const filters = useFeedFilters();
+  const { setFilters } = useFeedFiltersActions();
+  return (
+    <div className="pointer-events-auto shrink-0">
+      <SegmentedToggle
+        size="md"
+        ariaLabel={t("header.scope.label")}
+        options={[
+          {
+            value: "my",
+            label: t("header.scope.my"),
+            icon: <User className="w-3.5 h-3.5" />,
+            title: t("header.scope.myTip"),
+          },
+          {
+            value: "all",
+            label: t("header.scope.all"),
+            icon: <Library className="w-3.5 h-3.5" />,
+            title: t("header.scope.allTip"),
+          },
+        ]}
+        value={filters.scope}
+        onChange={(scope) => setFilters({ ...filters, scope })}
+      />
+    </div>
+  );
+}

frontend/src/components/FilterRail.tsx

@@ -8,10 +8,9 @@ import PanelGroups, { type PanelItem } from "./PanelGroups";
 // chrome around a PanelGroups body: the feed Sidebar, the PlexSidebar, and the PlaylistsRail. It owns
 // the customize (reorder/hide) `editing` state and the fixed title-bar wiring (edit toggle, reset to
 // the layout default, edit hint); each rail supplies only what actually differs — its identity
-// (title/icon), the active-filter count + Clear-all action, its `items`, and any content above the
-// groups (`top`, e.g. the feed's scope toggle) or below (`children`, e.g. the feed's tag manager).
-// `kind` is the PanelId (also the layout key), so `top`/`children` default to nothing for the rails
-// that need neither.
+// (title/icon), the active-filter count + Clear-all action, its `items`, and any content below the
+// groups (`children`, e.g. the feed's tag manager). `kind` is the PanelId (also the layout key), so
+// `children` defaults to nothing for the rails that need none.
 export default function FilterRail({
   kind,
   title,
@@ -23,7 +22,6 @@ export default function FilterRail({
   layout,
   setLayout,
   items,
-  top,
   children,
 }: {
   kind: PanelId;
@@ -36,7 +34,6 @@ export default function FilterRail({
   layout: PanelLayout;
   setLayout: (l: PanelLayout) => void;
   items: PanelItem[];
-  top?: ReactNode;
   children?: ReactNode;
 }) {
   const { t } = useTranslation();
@@ -54,7 +51,6 @@ export default function FilterRail({
       editHint={t("sidebar.editHint")}
       actions={actions}
     >
-      {top}
       <PanelGroups items={items} layout={layout} setLayout={setLayout} editing={editing} />
       {children}
     </SidePanel>

frontend/src/components/Header.tsx

@@ -5,6 +5,7 @@ import type { Me } from "../lib/api";
 import SearchBar from "./SearchBar";
 import PlexSearchBox from "./PlexSearchBox";
 import PlexScopeToggle from "./PlexScopeToggle";
+import FeedScopeToggle from "./FeedScopeToggle";
 import SyncStatus from "./SyncStatus";
 import { useNavigation } from "./NavigationProvider";
 import { useFeedFilters, useFeedFiltersActions } from "./FeedFiltersProvider";
@@ -98,6 +99,9 @@ const Header = forwardRef<
       className="pointer-events-none absolute top-3 left-4 right-[calc(1rem+var(--sbw))] mx-auto max-w-[var(--content-mw,none)] z-chrome flex flex-wrap items-center justify-center gap-x-3 gap-y-2"
     >
       {search}
+      {/* Mine/Library scope sits right of the feed search box — relocated here from the filter sidebar
+          so the primary "what am I browsing" control is always in reach (mirrors Plex's scope toggle). */}
+      {page === "feed" && <FeedScopeToggle />}
       {/* Library scope (movie/show/both) sits right of the search box on Plex — relocated here from
           the filter sidebar (S3) so the primary "what am I browsing" control is always in reach. */}
       {page === "plex" && me.plex_enabled && <PlexScopeToggle />}

frontend/src/components/Sidebar.tsx

@@ -2,7 +2,7 @@ import { type ReactNode, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { keepPreviousData, useQuery } from "@tanstack/react-query";
 import { qk } from "../lib/queryKeys";
-import { Library, Pencil, SlidersHorizontal, User } from "lucide-react";
+import { Pencil, SlidersHorizontal } from "lucide-react";
 import { api, type FeedFilters, type Tag } from "../lib/api";
 import { defaultLayout, type PanelLayout } from "../lib/panelLayout";
 import { useDebounced } from "../lib/useDebounced";
@@ -283,30 +283,6 @@ export default function Sidebar({
       setLayout={setLayout}
       items={items}
       actions={actions}
-      top={
-        /* Scope: your own subscriptions (Mine) vs the shared Library. */
-        <SegmentedToggle
-          ariaLabel={t("header.scope.label")}
-          fullWidth
-          size="md"
-          options={[
-            {
-              value: "my",
-              label: t("header.scope.my"),
-              icon: <User className="w-3.5 h-3.5" />,
-              title: t("header.scope.myTip"),
-            },
-            {
-              value: "all",
-              label: t("header.scope.all"),
-              icon: <Library className="w-3.5 h-3.5" />,
-              title: t("header.scope.allTip"),
-            },
-          ]}
-          value={filters.scope}
-          onChange={(scope) => setFilters({ ...filters, scope })}
-        />
-      }
     >
       {tagManagerOpen && (
         <TagManager onClose={() => setTagManagerOpen(false)} onFocusChannel={onFocusChannel} />