🔼 feat: "Run Code" Button Toggle

[danny-avila]

Summary

• Convert REDIS_MAX_LISTENERS to a number to ensure proper configuration
  • closes [Bug]: REDIS_MAX_LISTENERS does not work - argument must be of type number. Received type string #5979
• Integrate permission checks in the tool controller and Markdown code block so that code execution capability is enabled only if the user has access.
• Refactor permission middleware by extracting and improving the checkAccess function with enhanced logging and better error reporting.
• Update the role schema to add Temporary Chat and Run Code permissions with correct default values.
• Define the NextFunction typedef in the API for improved type clarity.
• Augment interface tests to cover the new permission features and validate configuration settings.

Documentation: LibreChat-AI/librechat.ai#244

Change Type

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Testing

• I ran local unit tests and verified that the Redis listener fix applies correctly.
• I performed manual tests by executing tool calls and checking that permission validations in both the tools controller and Markdown component behave as expected.
• I simulated API calls to ensure proper 403 responses when a user lacks the required permissions.
• I confirmed that updated role defaults are correctly applied in the interface specifications.

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
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes
• Any changes dependent on mine have been merged and published in downstream modules