feat: table series avec UUID PK — migration complète backend + frontend

Migration DB (0070 + 0071):
- Backup automatique de book_reading_progress avant migration
- Crée table series (fusion de series_metadata) avec UUID PK
- Ajoute series_id FK à books, external_metadata_links, anilist_series_links,
  available_downloads, download_detection_results
- Supprime les colonnes TEXT legacy et la table series_metadata

Backend API + Indexer:
- Toutes les queries SQL migrées vers series_id FK + JOIN series
- Routes /series/:name → /series/:series_id (UUID)
- Nouvel endpoint GET /series/by-name/:name pour lookup par nom
- match_title_volumes() factorisé entre prowlarr.rs et download_detection.rs
- Fix scheduler.rs: settings → app_settings
- OpenAPI mis à jour avec les nouveaux endpoints

Frontend:
- Routes /libraries/[id]/series/[name] → /series/[seriesId]
- Tous les composants (Edit, Delete, MarkRead, Prowlarr, Metadata,
  ReadingStatus) utilisent seriesId
- compressVolumes() pour afficher T1→3 au lieu de T1 T2 T3
- Titre release en entier (plus de truncate) dans available downloads

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/backoffice/app/api/libraries/[id]/series/[seriesId]/metadata/route.ts

@@ -0,0 +1,16 @@
+import { NextRequest, NextResponse } from "next/server";
+import { fetchSeriesMetadata } from "@/lib/api";
+
+export async function GET(
+  _request: NextRequest,
+  { params }: { params: Promise<{ id: string; seriesId: string }> }
+) {
+  const { id, seriesId } = await params;
+  try {
+    const data = await fetchSeriesMetadata(id, seriesId);
+    return NextResponse.json(data);
+  } catch (error) {
+    const message = error instanceof Error ? error.message : "Failed to fetch series metadata";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}

apps/backoffice/app/api/libraries/[id]/series/[seriesId]/route.ts

@@ -0,0 +1,31 @@
+import { NextRequest, NextResponse } from "next/server";
+import { updateSeries, deleteSeries } from "@/lib/api";
+
+export async function PATCH(
+  request: NextRequest,
+  { params }: { params: Promise<{ id: string; seriesId: string }> }
+) {
+  const { id, seriesId } = await params;
+  try {
+    const body = await request.json();
+    const data = await updateSeries(id, seriesId, body);
+    return NextResponse.json(data);
+  } catch (error) {
+    const message = error instanceof Error ? error.message : "Failed to update series";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}
+
+export async function DELETE(
+  _request: NextRequest,
+  { params }: { params: Promise<{ id: string; seriesId: string }> }
+) {
+  const { id, seriesId } = await params;
+  try {
+    await deleteSeries(id, seriesId);
+    return NextResponse.json({ deleted: true });
+  } catch (error) {
+    const message = error instanceof Error ? error.message : "Failed to delete series";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}