* The hardcoded Firebase API key in `util/auth.js` introduces a critical security vulnerability requiring immediate environment configuration. * Authentication flows utilize the standard React Context API effectively for global state centralization and token persistence management. * Code structure maintains strong separation between utility API calls, UI screens, and core component logic, enhancing maintainability. * Refactor generic login failure alerts to parse specific Firebase error codes, improving user experience and debugging capabilities. * Welcome screen token access is via query parameters; consider using the more robust HTTP Authorization headers for secured endpoints.
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