feat(refactor): Remove duplicated model properties from AgentConfig

[bhouston]

This PR addresses issue #227 by removing duplicated model properties from AgentConfig and relying solely on ToolContext for them.

Changes

• Removed provider, model, maxTokens, and temperature from AgentConfig
• Added maxTokens and temperature to ToolContext (which already had provider and model)
• Updated toolAgent function to use these properties from ToolContext instead of AgentConfig
• Updated DEFAULT_CONFIG to remove these properties
• Updated all code that uses AgentConfig to get these properties from ToolContext
• Updated tests to include the required properties in mock contexts

This change simplifies the codebase and removes confusion about where these configuration values should be set.

[github-actions]

🎉 This PR is included in version mycoder-agent-v1.1.0 🎉

The release is available on:

• pnpm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version mycoder-v1.1.0 🎉

The release is available on:

• pnpm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀