* feat(frontend): add LazyBoundary for chunk-load failure recovery
When a lazy chunk fetch fails, the existing top-level ErrorBoundary shows
"Something went wrong" with a "Try again" CTA. "Try again" cannot succeed
against a chunk URL that no longer exists on the server (typical post-
deploy case where the user's tab was opened against an older bundle).
The right remedy is to reload the tab so the browser fetches the new
hashed chunks emitted by the current build.
Add LazyBoundary, a section-local error boundary that:
- Detects chunk-load errors via a substring union covering Chrome / Edge
("Failed to fetch dynamically imported module"), Safari ("Importing a
module script failed"), Firefox ("disallowed MIME type" thrown when a
deploy serves SPA index.html for a missing chunk URL), older Webpack
("Error loading dynamically imported module"), and Vite ("Loading
chunk/CSS chunk N failed").
- For chunk errors, renders a glass-card matching the LockCard aesthetic
with an AlertTriangle icon, a "This part of Sencho needs a reload"
message, and a Reload CTA that calls window.location.reload().
- For non-chunk runtime errors, falls back to "Something went wrong" +
the error message + a Try again CTA. Try again is safe on this path
because the lazy import has already resolved before the render error
fires.
- Logs to console.error in componentDidCatch so the underlying failure
is still observable.
- Has role="alert" so screen readers announce the failure.
Wrap every existing Suspense site (1 in SettingsPage, 7 in EditorLayout
including the security-history overlay, 1 in ResourcesView) with
LazyBoundary. The top-level ErrorBoundary remains the catch-all for
errors that escape the section-local boundary.
Includes a unit test enumerating each browser's documented chunk-load
message so a regression in any one runtime is caught early.
* fix(frontend): move isChunkLoadError to its own file to satisfy react-refresh/only-export-components
Anso