agent-loop.md agent-workspace.md agent.md architecture.md compaction.md context-engine.md context.md delegate-architecture.md features.md markdown-formatting.md memory.md messages.md model-failover.md model-providers.md models.md multi-agent.md oauth.md presence.md queue.md retry.md session-pruning.md session-tool.md session.md streaming.md system-prompt.md timezone.md typebox.md typing-indicators.md usage-tracking.md