feat: propagate errors up subgraphs and show slot errors in subgraphs (#6963)

https://github.com/user-attachments/assets/6531879d-a8a2-420a-aaca-ee329386dd1a

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6963-feat-propagate-errors-up-subgraphs-and-show-slot-errors-in-subgraphs-2b76d73d3650813e8391fac0a5e6dc9b)
by [Unito](https://www.unito.io)

---------

Co-authored-by: github-actions <github-actions@github.com>

apps/desktop-ui/src/i18n.ts

@@ -1,13 +1,13 @@
 // Import only English locale eagerly as the default/fallback
 // ESLint cannot statically resolve dynamic imports with path aliases (@frontend-locales/*),
 // but these are properly configured in tsconfig.json and resolved by Vite at build time.
-// eslint-disable-next-line import-x/no-unresolved
+
 import enCommands from '@frontend-locales/en/commands.json' with { type: 'json' }
-// eslint-disable-next-line import-x/no-unresolved
+
 import en from '@frontend-locales/en/main.json' with { type: 'json' }
-// eslint-disable-next-line import-x/no-unresolved
+
 import enNodes from '@frontend-locales/en/nodeDefs.json' with { type: 'json' }
-// eslint-disable-next-line import-x/no-unresolved
+
 import enSettings from '@frontend-locales/en/settings.json' with { type: 'json' }
 import { createI18n } from 'vue-i18n'
 
@@ -27,7 +27,7 @@ function buildLocale<
 
 // Locale loader map - dynamically import locales only when needed
 // ESLint cannot statically resolve these dynamic imports, but they are valid at build time
-/* eslint-disable import-x/no-unresolved */
+
 const localeLoaders: Record<
   string,
   () => Promise<{ default: Record<string, unknown> }>