🛠️ Fix: Update Agent Cache and Improve Actions UI

[danny-avila]

Summary

Closes #4990
Closes #5018

I fixed an issue where the agent cache was not updating upon agent deletion, refactored agent mutations into a dedicated module, and improved the accessibility, localization, and styling of the actions input form.

• Fixed the agent cache to update correctly when an agent is deleted and when deleting and updating actions.
• Refactored agent mutations by moving them into a dedicated module to improve code organization and maintainability.
• Improved the accessibility (a11y), localization, and styling consistency of the actions input form for a better user experience.

Change Type

• Bug fix (non-breaking change which fixes an issue)

Testing

I tested the changes by:

• Running the application locally and verifying that deleting an agent updates the agents list and cache appropriately.
• Checking that deleting and updating actions work correctly and the corresponding agent data is updated without errors.
• Ensuring that the refactored mutations module functions as expected, with no regression in functionality.
• Reviewing the actions input form to confirm that the improvements in accessibility, localization, and styling are reflected in the UI.

Test Configuration:

• Operating System: [Your OS]
• Browser: [Your Browser and Version]
• Node.js Version: [Your Node.js Version]

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• I have made pertinent documentation changes
• My changes do not introduce new warnings
• Local unit tests pass with my changes