Add AnalyzeEarlySlotRegistrationsAsync method and update Program menu

Cli/Tasks/StoreTasks.cs

@@ -82,6 +82,47 @@ namespace FsToolbox.Cli.Tasks
 
         #endregion
 
+        #region Public Method GetStoreInformationAsync
+
+        /// <summary>
+        ///     Retrieves store information including the calendar interval.
+        /// </summary>
+        /// <param name="httpClient">The HTTP client used to send the request.</param>
+        /// <param name="storeId">The store identifier to query.</param>
+        /// <returns>The store information, or null when the call fails.</returns>
+        public static async Task<StoreInformation?> GetStoreInformationAsync(HttpClient httpClient, int storeId)
+        {
+            await AuthHelper.EnsureAuthenticationAsync(httpClient);
+
+            var uri = string.Format(Endpoints.StoreInformation, storeId);
+            var response = await httpClient.GetAsync(uri);
+            var responseBody = await response.Content.ReadAsStringAsync();
+
+            if (!response.IsSuccessStatusCode)
+            {
+                Logger.Error("Store information retrieval failed ({Status} {Reason}): {Body}", (int)response.StatusCode, response.ReasonPhrase, responseBody);
+                return null;
+            }
+
+            var opts = new JsonSerializerOptions
+            {
+                PropertyNameCaseInsensitive = true,
+                PropertyNamingPolicy = null
+            };
+
+            try
+            {
+                return JsonSerializer.Deserialize<StoreInformation>(responseBody, opts);
+            }
+            catch (JsonException ex)
+            {
+                Logger.Error(ex, "Failed to parse store information response.");
+                return null;
+            }
+        }
+
+        #endregion
+
         #region Public Method GetStoreLogAsync
 
         /// <summary>