Lint fixes and testing workflow actions

pkg/handlers/accounts.go

@@ -12,7 +12,7 @@ import (
 // Accounts returns the list of all configured WhatsApp accounts
 func (h *Handlers) Accounts(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(h.config.WhatsApp)
+	writeJSON(w, h.config.WhatsApp)
 }
 
 // AddAccount adds a new WhatsApp account to the system
@@ -43,5 +43,5 @@ func (h *Handlers) AddAccount(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.WriteHeader(http.StatusCreated)
-	json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
+	writeJSON(w, map[string]string{"status": "ok"})
 }