Chunk 6.1

In this chunk, the assistant designed and implemented a comprehensive web UI for the vast-manager system. The backend was significantly rewritten to add ring buffers for manager and instance logs, a Vast instance cache that enriches database records with live API data (GPU names, pricing, public IPs, SSH commands), and new API endpoints for the dashboard, log pushing, instance logs, and instance killing. The entrypoint script was updated to ship logs back to the manager via a background process that tracks byte offsets. The system was built, deployed to the controller host with a new `--ui-listen` flag on port 1236, and all new APIs were verified working. The embedded HTML dashboard provides a feature-rich operations interface with a dark theme. It includes summary cards for fleet-wide metrics (total cost per hour, proof rate, average price per proof, GPU count), a sortable instance table with state badges and pricing, expandable rows with detailed GPU/network stats and log viewers filtered by source (setup, cuzk, curio), a collapsible manager log panel, bad hosts management, auto-refresh, and keyboard shortcuts. The dashboard was confirmed accessible externally and providing accurate enriched data. After the UI deployment, the user reported a new instance (32709851) was running but not appearing in the dashboard. The assistant diagnosed the issue, finding the instance was started with an older image lacking the updated entrypoint. The user clarified that `VAST_CONTAINERLABEL` is an environment variable automatically injected by the VastAI platform, not a VM label. However, upon SSHing into the instance to verify, the assistant discovered that `VAST_CONTAINERLABEL` was entirely absent from the container's environment, revealing a deeper platform-level issue or a gap in the image setup that requires further investigation. The instance was manually labeled and registered with the manager as a temporary workaround.

From Architecture to Reality: Building a Fleet Management Dashboard and Debugging the Unexpected 3687 words

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