refactor: remove dead code from anime and auth packages

api/anime/handler.go

@@ -459,10 +459,6 @@ func (h *Handler) HandleSearch(w http.ResponseWriter, r *http.Request) {
 	renderNotFoundPage(r, w)
 }
 
-func (h *Handler) HandleStudioDetails(w http.ResponseWriter, r *http.Request) {
-	renderNotFoundPage(r, w)
-}
-
 func renderNotFoundPage(r *http.Request, w http.ResponseWriter) {
 	w.WriteHeader(http.StatusNotFound)
 	if err := templates.GetRenderer().ExecuteTemplate(r.Context(), w, "not_found.gohtml", map[string]any{

api/anime/service.go

@@ -128,18 +128,3 @@ func (s *Service) GetDiscoverSection(ctx context.Context, userID string, section
 		"WatchlistMap": watchlistMap,
 	}, nil
 }
-
-// filterUnique deduplicates anime list by mal id, respecting limit.
-func (s *Service) filterUnique(animes []jikan.Anime, seen map[int]bool, limit int) []jikan.Anime {
-	unique := make([]jikan.Anime, 0)
-	for _, a := range animes {
-		if !seen[a.MalID] {
-			seen[a.MalID] = true
-			unique = append(unique, a)
-		}
-		if len(unique) >= limit {
-			break
-		}
-	}
-	return unique
-}

api/auth/handler.go

@@ -17,14 +17,6 @@ func NewHandler(authService *Service) *Handler {
 	return &Handler{authService: authService}
 }
 
-// rateLimitErrorFromQuery checks for rate limit errors in the query string
-func rateLimitErrorFromQuery(r *http.Request) string {
-	if r.URL.Query().Get("error") == "rate_limited" {
-		return rateLimitFormError
-	}
-	return ""
-}
-
 // HandleLoginPage renders the login form
 func (h *Handler) HandleLoginPage(w http.ResponseWriter, r *http.Request) {
 	if err := templates.GetRenderer().ExecuteTemplate(r.Context(), w, "login.gohtml", map[string]any{