Extracts the residency snapshot/restore into scripts/ollama_residency.py
so the two benchmarks cannot drift, and applies it to
benchmark_tool_calling.py, which had no protection at all.
That script was the more dangerous of the two. It rewrites
OLLAMA_DEFAULT_MODEL in .env and lets uvicorn reload onto it, restoring
the original only after the loop — so any crash or interrupt left the
*running server* pointed at the benchmark model. Its DEFAULT_MODELS
begins with mistral-nemo-large, the 9.2G model implicated in the
2026-08-07 VRAM outage. Both the .env restore and the residency restore
now run from `finally`.
SIGTERM is handled explicitly in the shared module. Python runs `finally`
for SIGINT, which arrives as KeyboardInterrupt, but the default SIGTERM
action terminates outright, so `timeout` or a plain `kill` skipped the
guard entirely.
Co-Authored-By: Claude <noreply@anthropic.com>
