## Summary
Replaces cryptic "Failed to fetch" error messages with user-friendly
"Disconnected from backend" messages.
## Changes
- **What**: Detect network fetch errors in the central toast error
handler and display a helpful message with suggested action ("Check if
the server is running")
## Review Focus
The fix is intentionally minimal—only the central `toastErrorHandler` is
modified since all user-facing API errors flow through it.
Fixes COM-1839
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8748-fix-show-user-friendly-message-for-network-errors-3016d73d365081b3869bf19550c9af93)
by [Unito](https://www.unito.io)
* [refactor] Move update-related functionality to platform/updates domain
Reorganizes release management, version compatibility, and notification functionality
following Domain-Driven Design principles, mirroring VSCode's architecture pattern.
- Move releaseService.ts to platform/updates/common/
- Move releaseStore.ts to platform/updates/common/
- Move versionCompatibilityStore.ts to platform/updates/common/
- Move useFrontendVersionMismatchWarning.ts to platform/updates/common/
- Move toastStore.ts to platform/updates/common/
- Move ReleaseNotificationToast.vue to platform/updates/components/
- Move WhatsNewPopup.vue to platform/updates/components/
- Update 25+ import paths across codebase and tests
This creates a cohesive "updates" domain containing all functionality related to
software updates, version checking, release notifications, and user communication
about application state changes.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
* fix imports
---------
Co-authored-by: Claude <noreply@anthropic.com>
