Implement Auditable Workflow and Test Cases

Implement the full workflow for your LlamaIndex FinancialAnalystAgent, ensuring that each step of parsing data, calculating projections, and generating an audit trail is correctly executed. Create a test case with sample financial CSV data and parameters. The agent should produce the projected financial model, a detailed audit trail (generated by Claude Sonnet 4 via a tool call), and a summary. Verify that the audit trail is comprehensive and correctly explains the agent's reasoning, making the financial model predictable and auditable.