Inconsistent State Management and Minimal Error Handling.

[anushka226]

Description

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1. Unclear state transitions in CliModel.Update.
2. Minimal error handling in main.go.

Problem

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1. Hard to follow and maintain large switch blocks.
2. Lack of detailed error information leading to immediate program exit.

Steps to Implement

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1. Refactor CliModel.Update using a state machine pattern for clarity.
2. Improve error handling in main.go with detailed messages and logging.

Expected Outcome

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1. Enhanced code readability and maintainability.
2. Better user understanding of issues with error logs for debugging.