feat: add reading_status_push job — differential push to AniList

Push reading statuses (PLANNING/CURRENT/COMPLETED) to AniList for all
linked series that changed since last sync, or have new books/no sync yet.

- Migration 0057: adds reading_status_push to index_jobs type constraint
- Migration 0058: creates reading_status_push_results table (pushed/skipped/no_books/error)
- API: new reading_status_push module with start_push, get_push_report, get_push_results
- Differential detection: synced_at IS NULL OR reading progress updated OR new books added
- Same 429 retry logic as reading_status_match (wait 10s, retry once, abort on 2nd 429)
- Notifications: ReadingStatusPushCompleted/Failed events
- Backoffice: push button in reading status group, job detail report with per-series list
- Replay support, badge label, i18n (FR + EN)

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

apps/backoffice/lib/api.ts

@@ -1102,6 +1102,43 @@ export async function getReadingStatusMatchResults(jobId: string) {
   return apiFetch<ReadingStatusMatchResultDto[]>(`/reading-status/match/${jobId}/results`);
 }
 
+export async function startReadingStatusPush(libraryId: string) {
+  return apiFetch<{ id: string; status: string }>("/reading-status/push", {
+    method: "POST",
+    body: JSON.stringify({ library_id: libraryId }),
+  });
+}
+
+export type ReadingStatusPushReportDto = {
+  job_id: string;
+  status: string;
+  total_series: number;
+  pushed: number;
+  skipped: number;
+  no_books: number;
+  errors: number;
+};
+
+export type ReadingStatusPushResultDto = {
+  id: string;
+  series_name: string;
+  status: "pushed" | "skipped" | "no_books" | "error";
+  anilist_id: number | null;
+  anilist_title: string | null;
+  anilist_url: string | null;
+  anilist_status: string | null;
+  progress_volumes: number | null;
+  error_message: string | null;
+};
+
+export async function getReadingStatusPushReport(jobId: string) {
+  return apiFetch<ReadingStatusPushReportDto>(`/reading-status/push/${jobId}/report`);
+}
+
+export async function getReadingStatusPushResults(jobId: string) {
+  return apiFetch<ReadingStatusPushResultDto[]>(`/reading-status/push/${jobId}/results`);
+}
+
 export type RefreshFieldDiff = {
   field: string;
   old?: unknown;