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/anilist/series/[libraryId]/[seriesId]/route.ts

@@ -1,13 +1,13 @@
 import { NextResponse, NextRequest } from "next/server";
 import { apiFetch } from "@/lib/api";
 
-type Params = Promise<{ libraryId: string; seriesName: string }>;
+type Params = Promise<{ libraryId: string; seriesId: string }>;
 
 export async function GET(request: NextRequest, { params }: { params: Params }) {
   try {
-    const { libraryId, seriesName } = await params;
+    const { libraryId, seriesId } = await params;
     const data = await apiFetch(
-      `/anilist/series/${libraryId}/${encodeURIComponent(seriesName)}`,
+      `/anilist/series/${libraryId}/${seriesId}`,
     );
     return NextResponse.json(data);
   } catch (error) {
@@ -18,10 +18,10 @@ export async function GET(request: NextRequest, { params }: { params: Params })
 
 export async function POST(request: NextRequest, { params }: { params: Params }) {
   try {
-    const { libraryId, seriesName } = await params;
+    const { libraryId, seriesId } = await params;
     const body = await request.json();
     const data = await apiFetch(
-      `/anilist/series/${libraryId}/${encodeURIComponent(seriesName)}/link`,
+      `/anilist/series/${libraryId}/${seriesId}/link`,
       { method: "POST", body: JSON.stringify(body) },
     );
     return NextResponse.json(data);
@@ -33,9 +33,9 @@ export async function POST(request: NextRequest, { params }: { params: Params })
 
 export async function DELETE(request: NextRequest, { params }: { params: Params }) {
   try {
-    const { libraryId, seriesName } = await params;
+    const { libraryId, seriesId } = await params;
     const data = await apiFetch(
-      `/anilist/series/${libraryId}/${encodeURIComponent(seriesName)}/unlink`,
+      `/anilist/series/${libraryId}/${seriesId}/unlink`,
       { method: "DELETE" },
     );
     return NextResponse.json(data);