## Summary
- Set toast duration to 500ms when in test mode to speed up E2E tests
- This reduces test flakiness and speeds up tests that wait for toasts
to disappear

## Test plan
- Run E2E tests to verify toasts now disappear faster in test mode
- Verify regular app behavior is unchanged (toasts use default duration)

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Shorten toast duration to 500ms when test mode is enabled to speed up
E2E runs and reduce flakiness. Production behavior is unchanged; toasts
use the default duration outside test mode.

<sup>Written for commit 5d38cc2b792a215b89c2c4c3a5f970c44a3fa120.
Summary will update on new commits.</sup>

<!-- End of auto-generated description by cubic. -->
Co-authored-by: Will Chen <willchen90@gmail.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>