Consolidate architecture documentation

[sparklkt]

Summary

• consolidate architecture, safety, attention, collision lane, growth memory, and evaluation documentation
• refresh the README so the current project status, CLI commands, safety boundaries, and completed versions match the implemented system
• clarify throughout the docs that this repository is an offline AGI Seed research prototype, not AGI

Testing

• pytest -> 31 passed in 0.18s

Boundary Check

• keeps the project offline and rule-based
• no LLM integration
• no network reasoning in the pipeline
• no real external actions
• human judgment remains required at high-risk boundaries