[Phase 3] Implement Error Handling and Loading States

[halsk]

Description

Enhance error handling and loading states throughout the channel analysis UI flow.

Prerequisites

• Phase 1 and 2 issues should be completed

Tasks

• Implement consistent error handling across all components:
  • Channel selection errors
  • API communication errors
  • Analysis execution errors
  • Authentication/permission errors
• Add loading states for all asynchronous operations
• Create error boundary components to catch UI errors
• Add retry mechanisms for failed operations
• Implement user-friendly error messages
• Add logging for debugging purposes

References

• Based on strategy document in PR Add Channel Analysis UI Strategy Document #171

Acceptance Criteria

• All API calls have proper error handling
• Loading states are displayed during asynchronous operations
• Error messages are clear and actionable for users
• UI doesn't break when errors occur
• Retry mechanisms work correctly
• Edge cases are handled gracefully