refactor(web): pushToast store + ToastHost; 8 sites migrated (W3)

web/src/routes/admin/requests/+page.svelte

@@ -10,6 +10,7 @@
     rejectRequest
   } from '$lib/api/admin';
   import { errMessage } from '$lib/api/errors';
+  import { pushToast } from '$lib/stores/toast.svelte';
   import StatusPill from '$lib/components/StatusPill.svelte';
   import Modal from '$lib/components/Modal.svelte';
   import type { LidarrRequest, LidarrRequestKind, LidarrRequestStatus } from '$lib/api/types';
@@ -56,20 +57,6 @@
   let rejectOpen = $state<string | null>(null);
   let rejectNotes = $state<string>('');
 
-  // Toast surface — single line, fixed bottom-right, auto-clears after 5s.
-  // No third-party lib for v1; this is enough to surface the lidarr-unreachable
-  // error per spec §7 without dragging in a toast framework.
-  let toast = $state<string | null>(null);
-  let toastTimer: ReturnType<typeof setTimeout> | null = null;
-
-  function showToast(msg: string) {
-    if (toastTimer) clearTimeout(toastTimer);
-    toast = msg;
-    toastTimer = setTimeout(() => {
-      toast = null;
-    }, 5000);
-  }
-
   function fallbackIcon(kind: LidarrRequestKind) {
     if (kind === 'artist') return Disc3;
     if (kind === 'album') return Album;
@@ -115,7 +102,7 @@
       }
       await invalidate();
     } catch (e) {
-      showToast(errMessage(e));
+      pushToast(errMessage(e), 'error');
     }
   }
 
@@ -155,7 +142,7 @@
       await rejectRequest(r.id, notes ? notes : undefined);
       await invalidate();
     } catch (e) {
-      showToast(errMessage(e));
+      pushToast(errMessage(e), 'error');
     }
   }
 
@@ -385,17 +372,6 @@
   </div>
 </Modal>
 
-{#if toast}
-  <div
-    role="status"
-    aria-live="polite"
-    class="fixed bottom-4 right-4 z-50 max-w-sm rounded-md border border-border bg-surface px-4 py-3 text-sm text-text-primary shadow-lg"
-    data-testid="toast"
-  >
-    {toast}
-  </div>
-{/if}
-
 <style>
   .kind-pill {
     display: inline-flex;