[docs] [Spike] Research event validation strategies

[hasjack]

Research approaches for validating and securing the event system.

Research Areas

• Validation Strategies:
  • Schema validation
  • Runtime type checking
  • Event chain validation
  • Access control validation
• Security Considerations:
  • Event authenticity
  • Agent authorization
  • Rate limiting
  • Event replay protection
• Error Handling:
  • Validation error patterns
  • Recovery strategies
  • Error propagation

Deliverables

• Analysis of validation approaches
• Security considerations document
• Recommended validation pipeline
• Error handling patterns
• Validation rule examples

This research will inform the event validation implementation.