feat: add replay button on completed jobs in the jobs table

Shows a "Replay" button on non-active jobs that re-creates a new job
of the same type and library. Supports all replayable job types:
rebuild, full_rebuild, rescan, scan, thumbnail_rebuild,
thumbnail_regenerate, metadata_batch, metadata_refresh.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/backoffice/app/api/jobs/[id]/replay/route.ts

@@ -0,0 +1,38 @@
+import { NextRequest, NextResponse } from "next/server";
+import { apiFetch, IndexJobDto, rebuildIndex, rebuildThumbnails, regenerateThumbnails, startMetadataBatch, startMetadataRefresh } from "@/lib/api";
+
+export async function POST(
+  _request: NextRequest,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  const { id } = await params;
+  try {
+    const job = await apiFetch<IndexJobDto>(`/index/jobs/${id}`);
+    const libraryId = job.library_id ?? undefined;
+
+    switch (job.type) {
+      case "rebuild":
+        return NextResponse.json(await rebuildIndex(libraryId));
+      case "full_rebuild":
+        return NextResponse.json(await rebuildIndex(libraryId, true));
+      case "rescan":
+        return NextResponse.json(await rebuildIndex(libraryId, false, true));
+      case "scan":
+        return NextResponse.json(await rebuildIndex(libraryId));
+      case "thumbnail_rebuild":
+        return NextResponse.json(await rebuildThumbnails(libraryId));
+      case "thumbnail_regenerate":
+        return NextResponse.json(await regenerateThumbnails(libraryId));
+      case "metadata_batch":
+        if (!libraryId) return NextResponse.json({ error: "Library ID required for metadata batch" }, { status: 400 });
+        return NextResponse.json(await startMetadataBatch(libraryId));
+      case "metadata_refresh":
+        if (!libraryId) return NextResponse.json({ error: "Library ID required for metadata refresh" }, { status: 400 });
+        return NextResponse.json(await startMetadataRefresh(libraryId));
+      default:
+        return NextResponse.json({ error: `Cannot replay job type: ${job.type}` }, { status: 400 });
+    }
+  } catch (error) {
+    return NextResponse.json({ error: "Failed to replay job" }, { status: 500 });
+  }
+}

apps/backoffice/app/components/JobRow.tsx

@@ -30,11 +30,14 @@ interface JobRowProps {
   libraryName: string | undefined;
   highlighted?: boolean;
   onCancel: (id: string) => void;
+  onReplay: (id: string) => void;
   formatDate: (date: string) => string;
   formatDuration: (start: string, end: string | null) => string;
 }
 
-export function JobRow({ job, libraryName, highlighted, onCancel, formatDate, formatDuration }: JobRowProps) {
+const REPLAYABLE_TYPES = new Set(["rebuild", "full_rebuild", "rescan", "scan", "thumbnail_rebuild", "thumbnail_regenerate", "metadata_batch", "metadata_refresh"]);
+
+export function JobRow({ job, libraryName, highlighted, onCancel, onReplay, formatDate, formatDuration }: JobRowProps) {
   const { t } = useTranslation();
   const isActive = job.status === "running" || job.status === "pending" || job.status === "extracting_pages" || job.status === "generating_thumbnails";
   const [showProgress, setShowProgress] = useState(highlighted || isActive);
@@ -213,7 +216,7 @@ export function JobRow({ job, libraryName, highlighted, onCancel, formatDate, fo
               </svg>
               {t("jobRow.view")}
             </Link>
-            {(job.status === "pending" || job.status === "running" || job.status === "extracting_pages" || job.status === "generating_thumbnails") && (
+            {isActive && (
               <Button
                 variant="danger"
                 size="xs"
@@ -225,6 +228,18 @@ export function JobRow({ job, libraryName, highlighted, onCancel, formatDate, fo
                 {t("common.cancel")}
               </Button>
             )}
+            {!isActive && REPLAYABLE_TYPES.has(job.type) && (
+              <Button
+                variant="secondary"
+                size="xs"
+                onClick={() => onReplay(job.id)}
+              >
+                <svg className="w-3.5 h-3.5 mr-1.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15" />
+                </svg>
+                {t("jobRow.replay")}
+              </Button>
+            )}
           </div>
         </td>
       </tr>

apps/backoffice/app/components/JobsList.tsx

@@ -95,6 +95,14 @@ export function JobsList({ initialJobs, libraries, highlightJobId }: JobsListPro
     }
   };
 
+  const handleReplay = async (id: string) => {
+    const response = await fetch(`/api/jobs/${id}/replay`, { method: "POST" });
+    if (!response.ok) {
+      const data = await response.json().catch(() => ({}));
+      console.error("Failed to replay job:", data?.error ?? response.status);
+    }
+  };
+
   return (
     <div className="bg-card rounded-xl shadow-sm border border-border/60 overflow-hidden">
       <div className="overflow-x-auto">
@@ -119,6 +127,7 @@ export function JobsList({ initialJobs, libraries, highlightJobId }: JobsListPro
                 libraryName={job.library_id ? libraries.get(job.library_id) : undefined}
                 highlighted={job.id === highlightJobId}
                 onCancel={handleCancel}
+                onReplay={handleReplay}
                 formatDate={formatDate}
                 formatDuration={formatDuration}
               />