Fixed ANCHOR_TIMEOUT_SEC=240 guillotined every cian anchor when running via
USE_PROXY_POOL_BROWSER=true: each SERP fetch goes through camoufox with relaunch
on proxy swap (13-45s/page), and an anchor = 4 room-buckets x pages_per_anchor
SERP fetches + detail_top_n details + houses-enrich >> 240s. save_listings never
ran, lots_fetched=0, and after 3 consecutive skips the run was mark_banned.
Introduces _cian_anchor_timeout_s() mirroring the avito/yandex/domclick scaling
pattern: max(ANCHOR_TIMEOUT_SEC, buckets*pages*(delay+per_serp) + details*per_detail
+ houses_budget). Defaults -> 1580s worst-case watchdog (hang guard, not expected
duration). Applied to both the scraper-kit copy (strangler target) and the active
app.services.scrape_pipeline copy that run 581 actually hit.
