EMEX HTTP scrapes typically answer in ~4-5s, but the decode race capped EMEX at
3s (EMEX_RACE_MS) and fell back to PL24 — which doesn't cover EMEX-only brands.
Prod logs show the exact loss: "PL24 fallback triggered (EMEX: timeout)" at the
3s mark, immediately followed by "EMEX HTTP: found 334 categories". The win was
thrown away.
Raise the default cap to 8s and make it env-tunable (EMEX_RACE_MS), still well
inside the 25s decode budget. Only adds latency on the harder VINs where
PartsCatalogs didn't already resolve. Phase 3 of 4 on decode reliability.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Semih Yesilyurt
9b13c4a21f