feat(server): wire libraryService to KOReader handler

Required for CFI converter to resolve EPUB file paths during
bidirectional CFI conversion.

cmd/server/main.go

@@ -79,6 +79,7 @@ func main() {
 
 	koreaderHandler := handlers.NewKOReaderHandler(queries, connManager, queueProcessor)
 	koreaderHandler.SetProgressService(progressService)
+	koreaderHandler.SetLibraryService(libraryService)
 	wsHandler := handlers.NewWSHandler(queries, connManager, cfg.JWTSecret, deviceAuthMiddleware)
 	conflictHandler := handlers.NewConflictHandler(queries, connManager)
 	analyticsHandler := handlers.NewAnalyticsHandler(queries)