The global Vue errorHandler swallowed every crash into "Something went wrong.
Please refresh the page." — which hides exactly what we need to diagnose the
companion-app (Android WebView) post-login crash. Now:
- the toast shows the real (truncated) error message;
- a 25-entry ring buffer is kept on window.__archyErrors for retrieval where
there's no console (companion WebView via chrome://inspect, or a debug view);
- window 'error' and 'unhandledrejection' listeners catch async/non-Vue errors
that Vue's errorHandler misses (e.g. a JS API absent in an older WebView).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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