Optimize components for large datasets

**Problem**
When working with auth, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

The issue names authentication and error handling but does not identify files, tests, or entry points. Start by locating the authentication flow and its existing error messages; done means the relevant failures provide detailed, useful debugging context and are covered by appropriate checks.

Written by the indexing model from the issue text.