Refactor agent action and tool call code structure for maintainability

[galaxyeye]

Currently, the code related to agent actions and tool calls is scattered across multiple files. This fragmentation makes the codebase harder to maintain and update.

Proposed improvements:

• Consolidate agent action and tool calling logic into dedicated modules or services.
• Update code references to ensure there is a single, unified approach for invoking tool calls.
• Document the refactored structure to improve onboarding and future maintenance.
• Review related files and update dependencies and imports accordingly.

Branch: feat/agent-action-refactor

Rationale:
Centralizing agent action and tool call logic will make maintenance easier, reduce technical debt, and improve readability.

Impact:

• Improved maintainability
• Easier feature extension
• Reduced complexity for debugging

Acceptance Criteria:

• All agent action and tool calls handled via dedicated module/service
• Redundant/dispersed implementation removed
• Documentation updated

If migration or backward compatibility is required, specify a transition path in comments or documentation.