Add Analytics agent to Discovery phase

[xiapeli]

Summary

The Discovery phase currently relies on the Scout agent to research and gather information. An Analytics agent would complement Scout by analyzing quantitative data — market size, competitor metrics, user demographics, and trend data — to strengthen the discovery process with data-driven insights.

Suggested Approach

1. Create a new agent definition file in the Discovery phase directory
2. Use the new_agent.md issue template as a guide for defining input/output contracts
3. Consider using Haiku 4.5 for cost efficiency since this agent will be invoked frequently during discovery sweeps
4. The agent should accept raw data sources (URLs, CSVs, API endpoints) and output structured analysis summaries

Acceptance Criteria

• Agent definition file created with clear I/O contracts
• Model selection justified (Haiku vs Sonnet)
• Quality gates defined (e.g., data source citation required)
• Integration point with Scout agent documented
• Example input/output provided

Resources

• Review existing Scout agent for patterns
• Check new_agent.md template for required fields