Implements the AgentServer API from docs/agentserver_api_spec.md:
REST API (/api/v1):
- Organism info and config endpoints
- Agent listing, details, config, schema
- Thread and message history with filtering
- Control endpoints (inject, pause, resume, kill, stop)
WebSocket:
- /ws: Main control channel with state snapshot + real-time events
- /ws/messages: Dedicated message stream with filtering
Infrastructure:
- Pydantic models with camelCase serialization
- ServerState bridges StreamPump to API
- Pump event hooks for real-time updates
- CLI 'serve' command: xml-pipeline serve [config] --port 8080
35 new tests for models, state, REST, and WebSocket.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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