fix: harden offline fallback and track visitable pages

src/components/settings/CacheSettings.tsx

@@ -36,6 +36,7 @@ interface CacheStats {
   images: { size: number; entries: number };
   books: { size: number; entries: number };
   total: number;
+  visitablePages: number;
 }
 
 interface CacheEntry {
@@ -376,6 +377,9 @@ export function CacheSettings() {
             <p className="text-xs text-muted-foreground text-right">
               {t("settings.cache.imagesQuota", { used: Math.round(usagePercent) })}
             </p>
+            <p className="text-xs text-muted-foreground">
+              {t("settings.cache.visitablePages", { count: stats.visitablePages })}
+            </p>
           </div>
         )}
 

src/contexts/ServiceWorkerContext.tsx

@@ -17,6 +17,7 @@ interface CacheStats {
   images: { size: number; entries: number };
   books: { size: number; entries: number };
   total: number;
+  visitablePages: number;
 }
 
 interface CacheEntry {
@@ -112,7 +113,12 @@ export function ServiceWorkerProvider({ children }: { children: ReactNode }) {
         case "CACHE_STATS":
           const statsResolver = pendingRequests.current.get("CACHE_STATS");
           if (statsResolver) {
-            statsResolver(payload);
+            const normalizedPayload = {
+              ...payload,
+              visitablePages:
+                typeof payload?.visitablePages === "number" ? payload.visitablePages : 0,
+            };
+            statsResolver(normalizedPayload);
             pendingRequests.current.delete("CACHE_STATS");
           }
           break;

src/i18n/messages/en/common.json

@@ -144,10 +144,11 @@
       "initializing": "Initializing...",
       "totalStorage": "Total storage",
       "imagesQuota": "{used}% of images quota used",
+      "visitablePages": "{count} pages available offline",
       "static": "Static resources",
       "staticDesc": "Next.js scripts, styles and assets",
       "pages": "Visited pages",
-      "pagesDesc": "Home, libraries, series and details",
+      "pagesDesc": "Pages and navigation data available offline",
       "api": "API data",
       "apiDesc": "Series, books and library metadata",
       "images": "Images",

src/i18n/messages/fr/common.json

@@ -144,10 +144,11 @@
       "initializing": "Initialisation...",
       "totalStorage": "Stockage total",
       "imagesQuota": "{used}% du quota images utilisé",
+      "visitablePages": "{count} pages visitables hors ligne",
       "static": "Ressources statiques",
       "staticDesc": "Scripts, styles et assets Next.js",
       "pages": "Pages visitées",
-      "pagesDesc": "Home, bibliothèques, séries et détails",
+      "pagesDesc": "Pages et données de navigation disponibles hors ligne",
       "api": "Données API",
       "apiDesc": "Métadonnées des séries, livres et bibliothèques",
       "images": "Images",