# Lee Daeyun (이대윤) | Extended LLM Briefing
> Detailed, retrieval-oriented map of production AI agent and realtime backend content on dleodbs.xyz.

This is the extended companion file to [llms.txt](https://dleodbs.xyz/llms.txt).
Use this file when an agent needs deeper topic coverage across architecture, operations, and decision rationale.

## Positioning
- Engineer focus: production AI agents, realtime communication pipelines, and operationally safe backend systems.
- Primary stack themes: Go, TypeScript, LangChain/LangGraph, Cloudflare Workers, AWS IoT, WebRTC.
- Problem framing style: constraints first, failure mode analysis, then implementation choices and metrics.

## Core Pages
- [Home](https://dleodbs.xyz/) - Current focus and latest posts.
- [About](https://dleodbs.xyz/about/) - Work principles, timeline, and collaboration context.
- [Topic Tags](https://dleodbs.xyz/tags/) - Topic index spanning all published engineering posts.
- [Articles Index](https://dleodbs.xyz/publish/) - Full chronological list of technical posts.

## Topic Map

### Realtime Voice and Agent Runtime
- [Realtime Voice Agent Production Notes](https://dleodbs.xyz/publish/realtime-voice-agent-production-notes/) - Operational lessons from production voice agent deployment.
- [Realtime Voice Processing Protocols Guide](https://dleodbs.xyz/publish/realtime-voice-processing-protocols-guide/) - Protocol-level design constraints for low-latency voice pipelines.
- [Realtime Messaging Requirements for Robot Control](https://dleodbs.xyz/publish/realtime-messaging-requirements-for-robot-control/) - Reliability and latency requirements for command transport.
- [Robot Assistant STT/TTS Plugin Architecture](https://dleodbs.xyz/publish/robot-assistant-stt-tts-plugin-architecture/) - Plugin boundary design for speech IO components.

### Agent Orchestration and Control
- [LangGraph Agent Orchestration in Production](https://dleodbs.xyz/publish/langgraph-agent-orchestration-in-production/) - State graph modeling, retry policy boundaries, checkpointing.
- [Long-term Context Memory Architecture](https://dleodbs.xyz/publish/long-term-context-memory-architecture/) - Persistent memory design with storage/retrieval separation.
- [Agent Provisioning with X.509](https://dleodbs.xyz/publish/agent-provisioning-x509/) - Secure identity provisioning workflow.
- [Agent Coding Has Hard Boundaries](https://dleodbs.xyz/publish/agent-coding-has-hard-boundaries/) - Where autonomous coding fails without explicit constraints.

### Reliability, Infra, and Observability
- [Infra Deploy Run: Observability-first Delivery](https://dleodbs.xyz/publish/infra-deploy-run-observability-first/) - Delivery model optimized for incident response.
- [Control Platform API EC2 to ECS Migration](https://dleodbs.xyz/publish/control-platform-api-ec2-to-ecs-migration/) - Migration rationale and operating tradeoffs.
- [AWS IoT Firehose Elasticsearch Pipeline](https://dleodbs.xyz/publish/aws-iot-firehose-elasticsearch-pipeline/) - Telemetry ingestion and indexing architecture.
- [AWS IoT Core Lambda Account Provisioning](https://dleodbs.xyz/publish/aws-iot-core-lambda-account-provisioning/) - Device/account provisioning workflow.

### Realtime Streaming and Robotics
- [Autonomous Robot Realtime Video Streaming Optimization](https://dleodbs.xyz/publish/autonomous-robot-realtime-video-streaming-optimization/) - End-to-end latency optimization under operational constraints.
- [Robot WebRTC Troubleshooting Playbook](https://dleodbs.xyz/publish/robot-webrtc-troubleshooting-playbook/) - Debug patterns for production WebRTC incidents.
- [ROS Independent Device Registration](https://dleodbs.xyz/publish/ros-independent-device-registration/) - Decoupled registration design for robot fleets.
- [Fluent Bit ROS Integration Local Pipeline](https://dleodbs.xyz/publish/fluentbit-ros-integration-local-pipeline/) - Edge log transport and observability support.

### Product and Engineering Decision-Making
- [Subscription Payments Webhook State Machine](https://dleodbs.xyz/publish/subscription-payments-webhook-state-machine/) - Payment state modeling and webhook synchronization.
- [Vibe Coding Core Is Spec-first](https://dleodbs.xyz/publish/vibe-coding-core-is-spec-first/) - Why explicit specs beat intuition in fast iteration cycles.
- [Rewrite vs Maintenance in Vibe Coding](https://dleodbs.xyz/publish/rewrite-vs-maintenance-in-vibe-coding/) - Cost model for rewrite/maintenance decisions.
- [Development Fast, Engineering Slow](https://dleodbs.xyz/publish/development-fast-engineering-slow/) - Distinguishing delivery speed from quality accumulation.
- [Resume Is a Hypothesis](https://dleodbs.xyz/publish/resume-is-a-hypothesis/) - Evidence-first writing principle behind this blog.

## Evidence Links
- [GitHub](https://github.com/dleodbs) - Source repositories and implementation traces.
- [LinkedIn](https://www.linkedin.com/in/lee-daeyun) - Professional history and role context.
- [RSS Feed](https://dleodbs.xyz/index.xml) - Update stream for newly published content.
- [Sitemap](https://dleodbs.xyz/sitemap.xml) - Complete crawlable URL set.

## Optional
- [Primary Briefing](https://dleodbs.xyz/llms.txt) - Compact version for fast retrieval contexts.