Update api docs

server/internal/handlers/handlers.go

@@ -7,6 +7,11 @@ import (
 	"novamd/internal/storage"
 )
 
+// ErrorResponse is a generic error response
+type ErrorResponse struct {
+	Message string `json:"message"`
+}
+
 // Handler provides common functionality for all handlers
 type Handler struct {
 	DB      db.Database
@@ -25,6 +30,12 @@ func NewHandler(db db.Database, s storage.Manager) *Handler {
 func respondJSON(w http.ResponseWriter, data interface{}) {
 	w.Header().Set("Content-Type", "application/json")
 	if err := json.NewEncoder(w).Encode(data); err != nil {
-		http.Error(w, "Failed to encode response", http.StatusInternalServerError)
+		respondError(w, "Failed to encode response", http.StatusInternalServerError)
 	}
 }
+
+// respondError is a helper to send error responses
+func respondError(w http.ResponseWriter, message string, code int) {
+	w.WriteHeader(code)
+	respondJSON(w, ErrorResponse{Message: message})
+}