## Session 3.5 — Architecture Diagram + Langfuse Wiring (June 15, 2026)

### Delivered 🎨
| Artifact | Location |
|----------|----------|
| **Homelab Architecture Diagram** | `~/homelab-architecture.html` |
| **Langfuse Observability** | Wired to Hermes `.env` + plugin enabled ✅ |
| **ArchiveBox** | CT 506 started (booted) ✅ |

### Langfuse Integration
- Set `HERMES_LANGFUSE_BASE_URL=http://10.30.20.32:3000`
- Plugin `observability/langfuse` enabled
- SDK installed
- Every Hermes turn now creates a trace tree

### Fleet Summary (Final)
- **22 hosts** on 10.30.20.0/24
- **12 SSH BatchMode** (Proxmox, TheHex, Gitea, SearXNG, WikiJS, n8n, MongoDB, Redis, Vikunja, Router, Langfuse, C2builders)
- **28 Proxmox VMs/CTs** (18 running, 10 stopped)
- **Proxmox API** with admin token
- **Qdrant** v1.12.5 serving on 6333
- **Langfuse** v3.178.0 on .32:3000
- **C2builders** revived at .150
- **SSH key auth** fleet-wide

### Diagram
🖼️ Open `~/homelab-architecture.html` in a browser to see the full network topology