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bmad/bmm/testarch/knowledge/error-handling.md

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-# Error Handling and Resilience Checks
-
-- Treat expected failures explicitly: intercept network errors and assert UI fallbacks (`error-message` visible, retries triggered).
-- In Cypress, use scoped `Cypress.on('uncaught:exception')` to ignore known errors; rethrow anything else so regressions fail.
-- In Playwright, hook `page.on('pageerror')` and only swallow the specific, documented error messages.
-- Test retry/backoff logic by forcing sequential failures (e.g., 500, timeout, success) and asserting telemetry gets recorded.
-- Log captured errors with context (request payload, user/session) but redact secrets to keep artifacts safe for sharing.
-
-_Source: Murat error-handling patterns, Pact resilience guidance._