[setchy]

Summary

Adds error handling around the data router introduced in #3593.

• Adds a RouteError fallback that reuses Oops with a typed recovery action and a shared ReloadButton.
• Sets errorElement on the root route (full-window fallback) and on ProtectedLayout (keeps the sidebar and shell for screen-level errors).
• Logs router errors through RouterProvider onError so render errors are reported once, without a re-render.
• Wraps <App /> in a last-resort AppErrorBoundary for provider or bootstrap failures outside the route tree.
• Adds unit coverage for the route fallback, the outer boundary, and the recovery action.
• Adds visual coverage for both fallbacks across the four theme variants, including a chrome-less app error state.

Verification

• pnpm check
• pnpm test — 2093 passed
• pnpm test:visual — 184 passed in the pinned Linux container
• pnpm build

Notes

• The router boundary handles unexpected route failures; Oops still handles known domain errors (offline, credentials, scopes).
• The Reload action is a typed recovery action on Oops, not part of the declarative GitifyErrorAction route model.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
89.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud