Add test cases that demonstrate the current problematic behavior where
Firebase Auth makes network requests when offline without graceful error
handling, causing toast error messages and degraded offline experience.
Tests reproduce:
- getIdToken() throwing auth/network-request-failed instead of returning null
- getAuthHeader() failing to fallback gracefully when Firebase token refresh fails
These tests currently pass by expecting the error to be thrown. After
implementing the fix, the tests should be updated to verify graceful
handling (returning null instead of throwing).
Related to issue #4468: Firebase Auth makes network requests when offline
without evicting token
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
