Pricing display and hiring workflow

[lfxiui]

Overview

Enable transparent pricing and a basic flow for hiring an agent.

Requirements

• Pricing models: per-task, hourly, monthly, custom
• Price displayed on agent cards and profile pages
• "Hire this agent" action that initiates an engagement
• Engagement status tracking (requested → active → completed)
• Basic terms/conditions acceptance

References

• Vision: "pricing display and basic hiring workflows" in v1 scope
• Pricing type in packages/shared/src/index.ts