refactor(utils): share isRecord and getErrorMessage helpers

isRecord was declared locally in 15 modules (with two divergent shapes) and getErrorMessage in 7. Move a single canonical pair into utils/helpers and import it everywhere. The shared isRecord excludes arrays; the call sites that previously allowed them only read named properties, so behavior is unchanged.

src/features/plugins/PluginResourcePage.tsx

@@ -5,6 +5,7 @@ import { EmptyState } from '@/components/ui/EmptyState';
 import { useHeaderRefresh } from '@/hooks/useHeaderRefresh';
 import { pluginsApi } from '@/services/api';
 import { useAuthStore } from '@/stores';
+import { getErrorMessage, isRecord } from '@/utils/helpers';
 import type { PluginListResponse } from '@/types';
 import {
   collectPluginResourceEntries,
@@ -12,15 +13,9 @@ import {
 } from './pluginResources';
 import styles from './PluginResourcePage.module.scss';
 
-const isRecord = (value: unknown): value is Record<string, unknown> =>
-  value !== null && typeof value === 'object' && !Array.isArray(value);
-
 const hasStatus = (error: unknown, status: number) =>
   isRecord(error) && error.status === status;
 
-const getErrorMessage = (error: unknown, fallback: string) =>
-  error instanceof Error ? error.message : typeof error === 'string' ? error : fallback;
-
 const safeDecodeURIComponent = (value = '') => {
   try {
     return decodeURIComponent(value);

src/features/plugins/PluginStorePage.tsx

@@ -16,6 +16,7 @@ import {
 import { useHeaderRefresh } from '@/hooks/useHeaderRefresh';
 import { pluginStoreApi } from '@/services/api';
 import { useAuthStore, useConfigStore, useNotificationStore } from '@/stores';
+import { getErrorMessage, isRecord } from '@/utils/helpers';
 import type { PluginStoreEntry, PluginStoreResponse } from '@/types';
 import { buildRepositoryURL, resolvePluginAssetURL } from './pluginResources';
 import styles from './PluginStorePage.module.scss';
@@ -27,12 +28,6 @@ interface StoreLoadError {
   message: string;
 }
 
-const isRecord = (value: unknown): value is Record<string, unknown> =>
-  value !== null && typeof value === 'object' && !Array.isArray(value);
-
-const getErrorMessage = (error: unknown, fallback: string) =>
-  error instanceof Error ? error.message : typeof error === 'string' ? error : fallback;
-
 const getErrorStatus = (error: unknown): number | undefined =>
   isRecord(error) && typeof error.status === 'number' ? error.status : undefined;
 

src/features/plugins/PluginsPage.tsx

@@ -20,6 +20,7 @@ import {
 import { useHeaderRefresh } from '@/hooks/useHeaderRefresh';
 import { pluginsApi } from '@/services/api';
 import { useAuthStore, useConfigStore, useNotificationStore } from '@/stores';
+import { getErrorMessage, isRecord } from '@/utils/helpers';
 import type { PluginConfigField, PluginListEntry, PluginListResponse } from '@/types';
 import { getPluginTitle, resolvePluginAssetURL } from './pluginResources';
 import styles from './PluginsPage.module.scss';
@@ -44,15 +45,9 @@ function PluginCardLogo({ src }: { src: string }) {
   );
 }
 
-const isRecord = (value: unknown): value is Record<string, unknown> =>
-  value !== null && typeof value === 'object' && !Array.isArray(value);
-
 const cloneRecord = (value: unknown): Record<string, unknown> =>
   isRecord(value) ? { ...value } : {};
 
-const getErrorMessage = (error: unknown, fallback: string) =>
-  error instanceof Error ? error.message : typeof error === 'string' ? error : fallback;
-
 const hasStatus = (error: unknown, status: number) =>
   isRecord(error) && error.status === status;