feat(api,web): support CBR — extraction RAR, scan et lecture d'albums

- api: cbr utilitaire (extraction RAR), scanner/métadonnées (+ tests), books, schéma
- web: ReaderPage/locators (+ tests), mockData, types partagés
- deps: pnpm-lock

Refs: #17

apps/web/src/styles/app.css

@@ -263,6 +263,11 @@ h2 {
   color: var(--ink);
 }
 
+.format-cbr {
+  background: #6c4f2a;
+  color: var(--ink);
+}
+
 .continue-grid,
 .library-list,
 .job-list {