PR: Add Agent Reward Tracking and Enhanced Database Schema

[csmangum]

This PR introduces comprehensive reward tracking for agents and significantly enhances the simulation database schema to support better analysis and evolutionary tracking.

Key Changes

Agent Reward Tracking

• Added total_reward accumulation in all action types:
  • Attack actions
  • Gather actions
  • Move actions
  • Share actions

Enhanced Database Schema

• Added new fields to Agents table:

  • max_health
  • starvation_threshold
  • genome_id
  • parent_id (for tracking lineage)
  • generation

• Added new fields to AgentStates table:

  • current_health
  • max_health
  • starvation_threshold
  • is_defending
  • total_reward
  • age

• Added new metrics to SimulationSteps table:

  • Population dynamics (births, deaths, generations)
  • Resource metrics (efficiency, distribution)
  • Performance metrics (health, age, rewards)
  • Combat metrics (encounters, successful attacks)
  • Evolutionary metrics (genetic diversity)

Agent Creation Improvements

• Added support for tracking parent-child relationships
• Added generation tracking for evolutionary analysis
• Improved agent initialization with optional logging control
• Enhanced genome handling and mutation capabilities

Documentation

• Added comprehensive database schema documentation
• Added detailed field descriptions and usage examples
• Added performance considerations and error handling guidelines

Configuration Updates

• Updated default configuration to adjust initial agent populations
• System agents: 0 (reduced from 10)
• Independent agents: 10 (unchanged)
• Control agents: 10 (unchanged)