fix(flow): probe free models live before picking a default - #4
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`GET /api/integration` answers as soon as the engine is listening, but the catalog behind it is populated separately, so a page that loads the instant the engine comes up gets 200 with nothing in it. Nothing refetched it until a key changed, so the first thing a fresh install saw when it clicked "api keys" was an empty provider list — and one reload fixed it, which is the tell. Both catalog reads now retry on a short backoff, and opening the panel with no rows refetches. The model list only retries when a connected provider is present, since a fresh install with no key genuinely has no models and waiting on that would just delay the panel that exists to fix it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
"use a free model" picked the catalog's first free id, which can be listed but dead (deepseek-v4-flash-free answers HTTP 400). Walk the free candidates and set the default only on the first one that answers a real throwaway prompt, same check the per-node test button runs. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
deepseek-v4-flash-freeis listed but answers HTTP 400, so a fresh install could get stuck on a dead default.onUseFreenow walks the free-model candidates and calls the existingtestModelprobe (same live check the per-node "test" button runs) on each, setting the default only on the first one that actually answers a real prompt.Test plan
bun run typecheckclean (packages/flow)bun test— 507 pass, 0 faildeepseek-v4-flash-freeand landed on a model confirmed to answer (hy3-free)Co-Authored-By: Claude Sonnet 5 noreply@anthropic.com