Improve Error Messages for Failed Agent Operations

[daiwikmh]

Description

When swap operations fail, the SDK currently throws generic or unclear errors.
This makes debugging difficult for developers.

This issue improves error messages specifically for swap-related failures.

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Tasks

• Identify swap-related error paths
• Replace generic errors with descriptive messages
• Include context (asset, amount, network)
• Ensure no breaking API changes

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Acceptance Criteria

• Errors clearly describe the failure cause
• Error messages include relevant parameters
• No change to public method signatures

[rohan911438]

GM ,
could you please Assign me this Issue.
would not let you down

[ANSHSINGH5999]

Could you please assign this issue to me?