668e590e7d
Captures an evening that ran from an OOM crash-loop to a measured trainee base. The durable lessons, none of which CLAUDE.md can carry: --gpu-memory-utilization sizes the KV cache and does not cover CUDA context or graphs, which is half of why a seat that fit on the 21st stopped fitting on the 24th; the other half is that gen's footprint GROWS WITH UPTIME (38.5 GiB fresh against 45.6 GiB after three days, same container, same flag), so headroom arithmetic against a long-running gen measures a moving number. The stale-chat-template trap turned out to be endemic across third-party Gemma-4 derivatives rather than a one-off, and it is silent in both directions — wrong prompt when serving, train/serve skew when tuning. And a benchmark finding was retracted because 12% on a five-option task is below the 20% chance floor: a below-chance score indicts the instrument before the model, and a preflight can be thorough while aimed in the wrong direction. Records the serving decision for the tuned model with its history intact: LoRA-on-NVFP4 is preferred if it works, merged weights the expected fallback, but the archived root-cause says the objection was never NVFP4-specific — vLLM 0.24.0's LoRA application was a silent no-op proven quant-agnostic, and ana-ml2 now runs 0.26.0. Retest before designing around merge; the answer changes what Eitri's harness must emit, and he is still early. Auto-archival moved 5 entries (Recent decisions) to archival-memory.md; the guards held back the rest of the 78 age-eligible candidates because their bodies carry open deferred-work language, per the keep-when-unsure rule. Index sits at 286 lines, above the ~250 target and reported rather than forced.