POST /estimate returned an opaque 502 (gateway timeout), not a null-floor crash: the ungated Yandex valuation (30s httpx) + geocode/Overpass chain run serially on every estimate. Wraps slow enrichments in asyncio.wait_for budgets (config) so a slow upstream degrades to None instead of exceeding the gateway read timeout. Handler try/except -> logger.exception + 503 so future real errors are visible (GlitchTip) not masked. Explicit Caddy read/write timeout. Tests: null-floor skips IMV/Cian (no 5xx); Yandex timeout degrades. 65 regr pass. NOTE: Caddyfile.tradein-fragment is shared infra — devops review required. Closes #654 |
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