Route each scraper source (avito/cian/yandex/domclick) to its own camoufox
browser+proxy so they no longer wedge each other through a single global egress.
Feature-flagged (FEATURE_BROWSER_POOL_ENABLED, default OFF): with the flag off the
/fetch and /login paths are byte-for-byte the existing single-browser behavior.
When on, /fetch routes by body["source"] to a per-proxy browser via BROWSER_PROXY_MAP
(BROWSER_PROXY_AVITO/CIAN/YANDEX/DOMCLICK with legacy fallbacks), each guarded by its
own lazy-launched lock. /login stays single-browser in Phase 1.
BrowserFetcher gains a source arg (default avito) and sends it in the /fetch body;
all scraper callsites pass their source. No docker-compose/.env.runtime changes
(Phase 2, owner-gated).
Cian переименовал MFE ЖК-карточки и переместил reliability-контейнер, из-за чего
fetch_newbuilding получал initialState=None → failed_fetch для всех домов
(verified live 2026-06-15 на прод-браузере через мобильный egress):
- MFE: 'newbuilding-card-desktop-fichering-frontend' → 'newbuilding-card-desktop-frontend'
(старое имя на странице отсутствует → extract_state=None → backfill succeeded=0)
- reliability: initialState.reliability → initialState.reliabilityState.reliability
(inner dict сохранил форму {checkStatus, details[], banner, actions})
Проверено на ЖК «Светлый» (nb 17556): newbuilding.id, realtyValuation chart (27 точек),
reliabilityState.reliability.checkStatus + 2 details — всё извлекается.
test_fetch_newbuilding_parses_state: fixture обновлён под reliabilityState.reliability.
Полный suite зелёный (1779 passed; 2 несвязанных env-only локальных падения —
cian_valuation cache / search_api auth — в CI проходят).
Refs #972
curl_cffi получает zhk-*.cian.ru без initialState; tradein-browser (camoufox) тянет
страницу с 1.17MB initialState. Заменяем транспорт только для page-fetch;
session= param сохранён для backward-compat вызывающих. resolve_cian_zhk_url_via_search
остаётся на curl_cffi SERP. Тесты: 21 passed.
