diff --git a/frontend/src/features/upload/UploadPage.tsx b/frontend/src/features/upload/UploadPage.tsx
index 6da93fe..aa208e4 100644
--- a/frontend/src/features/upload/UploadPage.tsx
+++ b/frontend/src/features/upload/UploadPage.tsx
@@ -28,7 +28,13 @@ import {
   RATING_LABELS,
 } from "@/lib/e621";
 import { formatBytes } from "@/lib/format";
-import type { E621IqdbCandidate, Rating, TempUpload } from "@/lib/types";
+import type {
+  E621IqdbCandidate,
+  Rating,
+  TempUpload,
+  UploadCompletion,
+  UploadStagingResult,
+} from "@/lib/types";
 import {
   postProcessUploads,
   uploadStatusQueryKey,
@@ -272,6 +278,21 @@ function TempCard({
         </div>
       ) : null}
 
+      {temp.status === "error" ? (
+        <div className="mt-2 flex flex-wrap items-center gap-1.5">
+          <Button className="px-2 py-1 text-xs" onClick={onRetry}>
+            Retry
+          </Button>
+          <Button
+            variant="secondary"
+            className="px-2 py-1 text-xs"
+            onClick={onOpen}
+          >
+            Set metadata
+          </Button>
+        </div>
+      ) : null}
+
       <button
         type="button"
         onClick={onDismiss}
@@ -289,6 +310,58 @@ function TempCard({
   );
 }
 
+/**
+ * A "J-x uploaded" notification.
+ *
+ * Completions are not stored on the board: the pipeline deletes the staged
+ * record and announces it through the status feed, so these cards only exist
+ * while the page is open.
+ */
+function CompletionCard({ completion }: { completion: UploadCompletion }) {
+  const preview = apiUrl(completion.thumbnail_url ?? "");
+  return (
+    <div className="rounded-lg border border-ctp-surface0 bg-ctp-base p-2.5">
+      <div className="relative aspect-video overflow-hidden rounded-md bg-ctp-mantle">
+        {preview ? (
+          <img
+            src={preview}
+            alt={completion.filename}
+            loading="lazy"
+            className="h-full w-full object-cover"
+          />
+        ) : (
+          <div className="flex h-full w-full items-center justify-center text-xs text-ctp-overlay0">
+            No preview
+          </div>
+        )}
+        <span className="absolute right-2 top-2 flex items-center gap-1 rounded-full bg-ctp-green/90 px-1.5 py-0.5 font-mono text-[10px] font-medium text-ctp-crust">
+          <CheckCircle2 className="h-2.5 w-2.5" />
+          indexed
+        </span>
+      </div>
+
+      <p
+        className="mt-2 truncate font-mono text-xs text-ctp-subtext1"
+        title={completion.filename}
+      >
+        {completion.filename}
+      </p>
+      <p className="mt-1 flex items-center gap-1.5 text-xs text-ctp-green">
+        <CheckCircle2 className="h-3.5 w-3.5 shrink-0" />
+        <Link
+          to={`/detail/${completion.j_id}`}
+          className="font-mono hover:underline"
+        >
+          {completion.j_id}
+        </Link>
+        <span className="truncate text-ctp-overlay0">
+          {RESOLUTION_LABELS[completion.resolution] ?? completion.resolution}
+        </span>
+      </p>
+    </div>
+  );
+}
+
 /**
  * Full metadata editor for one staged upload.
  *
@@ -816,6 +889,10 @@ export default function UploadPage() {
   const [discarding, setDiscarding] = useState(false);
   const [modalId, setModalId] = useState<string | null>(null);
   const [bulkOpen, setBulkOpen] = useState(false);
+  // Indexed uploads shown while this page is open (never persisted).
+  const [completions, setCompletions] = useState<UploadCompletion[]>([]);
+  const completionsSeeded = useRef(false);
+  const seenCompletions = useRef<Set<string>>(new Set());
 
   useEffect(() => {
     const urls = objectUrls.current;
@@ -836,6 +913,27 @@ export default function UploadPage() {
   });
   const uploads = uploadsQuery.data ?? [];
 
+  // Completions are session notifications. Seed what the server already has
+  // when the page opens (so a reload does not resurrect old ones) and append
+  // only what happens while the page is watching.
+  useEffect(() => {
+    const feed = status?.recent_completions;
+    if (!feed) return;
+    if (!completionsSeeded.current) {
+      completionsSeeded.current = true;
+      // Merge: a staging duplicate may have been added before the first poll.
+      seenCompletions.current = new Set([
+        ...seenCompletions.current,
+        ...feed.map((entry) => entry.id),
+      ]);
+      return;
+    }
+    const fresh = feed.filter((entry) => !seenCompletions.current.has(entry.id));
+    if (fresh.length === 0) return;
+    for (const entry of fresh) seenCompletions.current.add(entry.id);
+    setCompletions((current) => [...fresh, ...current].slice(0, 200));
+  }, [status]);
+
   function cacheStatus(data: unknown) {
     queryClient.setQueryData(uploadStatusQueryKey, data);
   }
@@ -892,9 +990,7 @@ export default function UploadPage() {
 
   const pending = uploads.filter((temp) => temp.status === "pending");
   const visual = uploads.filter((temp) => temp.status === "visual_match");
-  const completed = uploads.filter(
-    (temp) => temp.status === "completed" || temp.status === "error",
-  );
+  const failed = uploads.filter((temp) => temp.status === "error");
 
   // Active work stays in insertion order (the grid must not reshuffle while
   // you scroll it); the in-flight files get their own strip above it.
@@ -1001,10 +1097,26 @@ export default function UploadPage() {
           error: undefined,
         });
         try {
-          await uploadFile(entry.file, {}, (percent) =>
-            reportProgress(entry.id, percent),
+          const result = await uploadFile<UploadStagingResult>(
+            entry.file,
+            {},
+            (percent) => reportProgress(entry.id, percent),
           );
           finishEntry(entry);
+          // An exact duplicate completes during staging: show its card now.
+          if (result?.status === "completed" && result.library_j_id) {
+            const completion: UploadCompletion = {
+              id: result.temp_id,
+              filename: result.original_filename,
+              j_id: result.library_j_id,
+              resolution: result.resolution,
+              post_id: result.e621_post_id ?? null,
+              thumbnail_url: result.preview_url ?? null,
+              at: new Date().toISOString(),
+            };
+            seenCompletions.current.add(completion.id);
+            setCompletions((current) => [completion, ...current].slice(0, 200));
+          }
           // Processing starts while the rest of the drop is still uploading.
           kickPipeline();
         } catch (error) {
@@ -1060,39 +1172,40 @@ export default function UploadPage() {
       .catch((error) => toast.error(errorMessage(error)));
   }
 
-  async function discardAll(
-    items: TempUpload[],
-    kind: "discard" | "dismiss",
-  ) {
+  async function discardAll(items: TempUpload[]) {
     if (items.length === 0 || discarding) return;
-    const noun = kind === "discard" ? "Discard" : "Dismiss";
     const confirmed = await confirmAction({
-      title: `${noun} ${items.length} record${items.length === 1 ? "" : "s"}?`,
+      title: `Discard ${items.length} record${items.length === 1 ? "" : "s"}?`,
       description:
-        kind === "discard"
-          ? "The staged files are deleted from the staging folder and never enter the library. Files the pipeline is importing right now are skipped."
-          : "This only removes the board records; library files are untouched.",
-      confirmLabel: `${noun} all`,
-      danger: kind === "discard",
+        "The staged files are deleted from the staging folder and never enter the library. Files the pipeline is importing right now are skipped.",
+      confirmLabel: "Discard all",
+      danger: true,
     });
     if (!confirmed) return;
     setDiscarding(true);
     try {
-      const result = await api<{
-        discarded: string[];
-        errors: { temp_id: string; error: string }[];
-      }>("/api/uploads/discard-bulk/", {
-        method: "POST",
-        json: { temp_ids: items.map((temp) => temp.temp_id) },
-      });
-      const verb = kind === "discard" ? "Discarded" : "Dismissed";
-      if (result.discarded.length > 0) {
-        toast.ok(`${verb} ${result.discarded.length} record(s).`);
+      // The endpoint caps one request at 1000 ids; large staging backlogs
+      // must still be discardable in one go.
+      const ids = items.map((temp) => temp.temp_id);
+      const chunkSize = 500;
+      const discarded: string[] = [];
+      const errors: { temp_id: string; error: string }[] = [];
+      for (let start = 0; start < ids.length; start += chunkSize) {
+        const result = await api<{
+          discarded: string[];
+          errors: { temp_id: string; error: string }[];
+        }>("/api/uploads/discard-bulk/", {
+          method: "POST",
+          json: { temp_ids: ids.slice(start, start + chunkSize) },
+        });
+        discarded.push(...result.discarded);
+        errors.push(...result.errors);
       }
-      if (result.errors.length > 0) {
-        toast.error(
-          `${result.errors.length} record(s) could not be removed.`,
-        );
+      if (discarded.length > 0) {
+        toast.ok(`Discarded ${discarded.length} record(s).`);
+      }
+      if (errors.length > 0) {
+        toast.error(`${errors.length} record(s) could not be removed.`);
       }
       void queryClient.invalidateQueries({ queryKey: ["uploads"] });
       void queryClient.invalidateQueries({ queryKey: ["upload-status"] });
@@ -1127,10 +1240,11 @@ export default function UploadPage() {
     );
   }
 
-  const column = (
+  const column = <T,>(
     title: string,
-    items: TempUpload[],
+    items: T[],
     emptyText: string,
+    render: (item: T) => ReactNode,
     action?: ReactNode,
   ) => (
     <section className="flex min-w-0 flex-col gap-3">
@@ -1148,17 +1262,7 @@ export default function UploadPage() {
           {emptyText}
         </p>
       ) : (
-        <div className="flex flex-col gap-3">
-          {items.map((temp) => (
-            <TempCard
-              key={temp.temp_id}
-              temp={temp}
-              onOpen={() => setModalId(temp.temp_id)}
-              onRetry={() => retry(temp, "iqdb")}
-              onDismiss={() => dismiss(temp)}
-            />
-          ))}
-        </div>
+        <div className="flex flex-col gap-3">{items.map(render)}</div>
       )}
     </section>
   );
@@ -1387,11 +1491,20 @@ export default function UploadPage() {
         </section>
       ) : null}
 
-      <div className="grid gap-6 lg:grid-cols-3">
+      <div className="grid gap-6 lg:grid-cols-4">
         {column(
           "Pending & Unmatched",
           pending,
           "Nothing waiting.",
+          (temp) => (
+            <TempCard
+              key={temp.temp_id}
+              temp={temp}
+              onOpen={() => setModalId(temp.temp_id)}
+              onRetry={() => retry(temp, "iqdb")}
+              onDismiss={() => dismiss(temp)}
+            />
+          ),
           pending.length > 0 ? (
             <span className="flex items-center gap-1.5">
               <Button
@@ -1407,7 +1520,7 @@ export default function UploadPage() {
                 variant="danger"
                 className="px-2 py-0.5 text-[11px]"
                 disabled={discarding}
-                onClick={() => void discardAll(pending, "discard")}
+                onClick={() => void discardAll(pending)}
                 title="Delete every staged file in this column"
               >
                 <Trash2 className="h-3.5 w-3.5" />
@@ -1420,12 +1533,21 @@ export default function UploadPage() {
           "Visual Similarity Detected",
           visual,
           "No IQDB matches right now.",
+          (temp) => (
+            <TempCard
+              key={temp.temp_id}
+              temp={temp}
+              onOpen={() => setModalId(temp.temp_id)}
+              onRetry={() => retry(temp, "iqdb")}
+              onDismiss={() => dismiss(temp)}
+            />
+          ),
           visual.length > 0 ? (
             <Button
               variant="danger"
               className="px-2 py-0.5 text-[11px]"
               disabled={discarding}
-              onClick={() => void discardAll(visual, "discard")}
+              onClick={() => void discardAll(visual)}
               title="Delete every staged file in this column"
             >
               <Trash2 className="h-3.5 w-3.5" />
@@ -1435,20 +1557,48 @@ export default function UploadPage() {
         )}
         {column(
           "Auto-uploaded & Indexed",
-          completed,
-          "Nothing indexed yet.",
-          completed.length > 0 ? (
+          completions,
+          "Nothing indexed while you were watching.",
+          (completion) => (
+            <CompletionCard key={completion.id} completion={completion} />
+          ),
+          completions.length > 0 ? (
             <button
               type="button"
-              disabled={discarding}
-              onClick={() => void discardAll(completed, "dismiss")}
-              title="Dismiss every indexed record"
+              onClick={() => setCompletions([])}
+              title="Clear these notifications (nothing is stored)"
               className="rounded-md px-1.5 py-0.5 font-mono text-[10px] text-ctp-overlay0 transition hover:bg-ctp-surface0 hover:text-ctp-text"
             >
-              dismiss all
+              clear
             </button>
           ) : null,
         )}
+        {column(
+          "Failed",
+          failed,
+          "No failed uploads.",
+          (temp) => (
+            <TempCard
+              key={temp.temp_id}
+              temp={temp}
+              onOpen={() => setModalId(temp.temp_id)}
+              onRetry={() => retry(temp)}
+              onDismiss={() => dismiss(temp)}
+            />
+          ),
+          failed.length > 0 ? (
+            <Button
+              variant="danger"
+              className="px-2 py-0.5 text-[11px]"
+              disabled={discarding}
+              onClick={() => void discardAll(failed)}
+              title="Delete every failed staged file in this column"
+            >
+              <Trash2 className="h-3.5 w-3.5" />
+              discard all
+            </Button>
+          ) : null,
+        )}
       </div>
 
       {modalId ? (
diff --git a/frontend/src/lib/types.ts b/frontend/src/lib/types.ts
index e19c2e6..ec1bb06 100644
--- a/frontend/src/lib/types.ts
+++ b/frontend/src/lib/types.ts
@@ -388,6 +388,28 @@ export interface TempUpload {
   updated_at: string;
 }
 
+/** One upload the pipeline indexed while the page was watching. */
+export interface UploadCompletion {
+  id: string;
+  filename: string;
+  j_id: string;
+  resolution: string;
+  post_id: number | null;
+  thumbnail_url: string | null;
+  at: string;
+}
+
+/** Response of POST /api/uploads/ — a pending row or an instant completion. */
+export interface UploadStagingResult {
+  temp_id: string;
+  original_filename: string;
+  status: "pending" | "visual_match" | "completed" | "error";
+  resolution: string;
+  library_j_id: string | null;
+  preview_url: string | null;
+  e621_post_id?: number | null;
+}
+
 /** Progress of the server-side staged-upload pipeline. */
 export interface UploadStatus {
   status: "idle" | "running" | "paused" | "error";
@@ -400,6 +422,8 @@ export interface UploadStatus {
   error: string;
   outstanding: number;
   waiting: { md5: number; visual: number; iqdb: number };
+  /** Session notification feed: indexed uploads, newest first. */
+  recent_completions: UploadCompletion[];
   updated_at: string | null;
 }