Create comprehensive architecture document for autonomous agents

## REVIEWER AUDIT - APPROVED ✓ ### Document Quality Assessment **Scope**: Single file (`/docs/AGENT_ARCHITECTURE.md`) - exactly as specified ✓ **Content Coverage** - All requested sections present: | Requirement | Status | Notes | |-------------|--------|-------| | System overview diagram | ✓ | ASCII diagram showing component relationships | | Agent Types and Responsibilities | ✓ | 5 agent types with clear responsibilities | | Communication Protocols | ✓ | WebSocket, MCP Bridge, Hotwire covered | | Decision-Making Algorithms | ✓ | Priority scoring, availability, assignment logic | | State Management | ✓ | Agent AASM, availability status, Ticket AASM | | Error Handling and Recovery | ✓ | Retry mechanisms, degradation, escalation | | Resource Allocation | ✓ | Capacity management, load balancing, priority queue | | Learning and Adaptation | ✓ | AgentMemory, knowledge retention, optimization | ### Additional Valuable Content - **Technology Stack** section (Ruby 3.3+, Rails 8.0+, PostgreSQL, pgvector, Solid Queue, ActionCable) - **Implementation Roadmap** with version tracking (v1.0 completed, v1.1 in progress, v1.2 planned) - **File Reference** table linking components to file paths - **MCP Tools table** listing all 15 available tools - **State machine diagrams** with transition tables - **Code examples** in Ruby showing actual implementation ### Document Structure - 576 lines, well-organized with table of contents - ASCII diagrams for visual understanding - Tables for tool listings, state transitions, agent capabilities - Code snippets showing implementation details - Clear section headers with anchor links ### Accuracy Verification Cross-referenced key claims against actual codebase: - Agent types match `app/models/agent.rb` validation ✓ - Ticket states match `app/models/ticket.rb` AASM ✓ - MCP tools match `mcp-bridge/src/tools/index.ts` ✓ - WebSocket streams match `app/channels/agent_channel.rb` ✓ - AgentMemory types match `app/models/agent_memory.rb` ✓ **Status**: PASS_AUDIT - High-quality documentation ready for human approval