Refactor AML investigation agent

[fcogidi]

Summary

Refactor AML investigation agent: add task and agent modules, update README and CLI.

Clickup Ticket(s): N/A

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🔧 Refactoring (no functional changes)
• ⚡ Performance improvement
• 🧪 Test improvements
• 🔒 Security fix

Changes Made

• Added agent.py module in package
• Added task.py containing langfuse-compatible task function
• Added CLI for running agent on cases
• Refactored agent.py in implmentations/ to serve as entrypoint for adk web

Testing

• Tests pass locally (uv run pytest tests/)
• Type checking passes (uv run mypy <src_dir>)
• Linting passes (uv run ruff check src_dir/)
• Manual testing performed (describe below)

Manual testing details:
N/A

Screenshots/Recordings

N/A

Related Issues

N/A

Deployment Notes

N/A

Checklist

• Code follows the project's style guidelines
• Self-review of code completed
• Documentation updated (if applicable)
• No sensitive information (API keys, credentials) exposed

[Copilot]

Pull request overview

This PR refactors the AML investigation agent implementation by modularizing the agent creation, introducing a Langfuse-compatible task wrapper, and adding a dedicated CLI for batch case processing. The refactoring improves code organization and makes the agent more suitable for both interactive (ADK web) and batch evaluation workflows.

Changes:

• Extracted agent creation logic into a reusable factory function with comprehensive configuration options
• Added a Langfuse-compatible task wrapper for integration with evaluation harnesses
• Created a new CLI module for running batch case analyses with progress tracking and resume capability

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
implementations/aml_investigation/cli.py	New CLI for batch processing AML cases from JSONL with concurrency control and resume support
implementations/aml_investigation/agent.py	Simplified to serve as ADK web entrypoint, delegating to the new agent factory
implementations/aml_investigation/README.md	Updated documentation to reflect new CLI usage and file naming conventions
aieng-eval-agents/aieng/agent_evals/aml_investigation/task.py	New task wrapper implementing Langfuse experiment protocol for AML investigations
aieng-eval-agents/aieng/agent_evals/aml_investigation/agent.py	New agent factory with configurable parameters and built-in tracing support
aieng-eval-agents/aieng/agent_evals/aml_investigation/init.py	Updated exports to include new agent factory and task wrapper

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