Chunk 20.0

This chunk focused on deploying, testing, and refining the vast-manager cuzk status panel. The Go backend and HTML UI were deployed to the manager host (10.1.2.104), SSH keys were generated and added to the test machine (141.0.85.211) to enable the SSH‑tunneled polling, and the full chain from browser to cuzk daemon was verified working with live proof data. Two bugs were identified and fixed: (1) GPU workers always showed "idle" during proving because `partition_gpu_end` unconditionally cleared the worker's busy state, even when the worker had already picked up a new job (a race with the split‑proving finalizer). The fix adds a guard to only clear the worker if it is still assigned to the same job and partition. (2) The job ID was truncated to 8 characters, cutting off at the "ps-snap‑" prefix; increased to 16 characters for readability. The synthesis concurrency display showed e.g. 14/4 active because `max_concurrent` was taken from the `synthesis_concurrency` config parameter, which limits batch‑dispatch concurrency, not per‑partition synthesis. The real limiter is the memory budget. The status API was changed to compute `synth_max` dynamically from the budget (`total_bytes / min_partition_size`), so the display now reflects the effective capacity. All fixes were committed as `c3227334`.

From Deployment to Debugging to Architecture: The cuzk Status Panel's Journey Through Production Reality 1963 words

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