fix(core): clarify account fallback source and pretty-print _json payloads

src/lib/api/api.ts

@@ -29,6 +29,22 @@ import {
 
 import { get_data_store } from '$lib/ae_api/api_get__data_store';
 
+const JSON_PRETTY_SPACES = 2;
+
+function serialize_json_field_pretty(value: any) {
+    if (value === null || value === undefined) return value;
+
+    if (typeof value === 'string') {
+        try {
+            return JSON.stringify(JSON.parse(value), null, JSON_PRETTY_SPACES);
+        } catch {
+            return value;
+        }
+    }
+
+    return JSON.stringify(value, null, JSON_PRETTY_SPACES);
+}
+
 /**
  * Get a list of lookup objects (V3)
  * Standardized lookup data like countries, timezones, and subdivisions.
@@ -165,7 +181,7 @@ export const create_ae_obj_crud = async function create_ae_obj_crud({
                 if (log_lvl) {
                     console.log(`${key}: ${value}`);
                 }
-                data['data_list'][key] = JSON.stringify(value);
+                data['data_list'][key] = serialize_json_field_pretty(value);
             }
         }
     }
@@ -276,7 +292,7 @@ export const update_ae_obj_id_crud = async function update_ae_obj_id_crud({
                 if (log_lvl) {
                     console.log(`${key}: ${value}`);
                 }
-                data['data_list'][key] = JSON.stringify(value);
+                data['data_list'][key] = serialize_json_field_pretty(value);
             }
         }
     }