app/tasks/avito_detail_backfill.py imported _CHROME_HEADERS/_avito_proxies from
the legacy app/services/scrape_pipeline.py (the only two symbols it needed from
that module). scrape_pipeline.py is slated for wholesale deletion in Part E of
epic #2277 -- this severs the last dependency so that deletion won't break the
backfill task.
Source chosen: kit-reuse, not relocate. scraper_kit/providers/_base.py (#2358
Foundation) already extracted the identical building blocks while deduplicating
providers/avito/{serp,detail,imv}.py:
- DOCUMENT_HEADERS -- byte-identical dict to _CHROME_HEADERS (same 8 keys/values,
Accept/Accept-Language/Cache-Control/Sec-Fetch-*/Upgrade-Insecure-Requests).
- http_proxies(proxy_url) -- same formula as _avito_proxies():
{"http": url, "https": url} if url else None, just parameterized instead of
reading settings.scraper_proxy_url internally (both resolve the identical
settings singleton in production, so behavior is unchanged).
Kept the AsyncSession(...) construction inline (didn't switch to kit's
build_document_session helper) to preserve the existing
`app.tasks.avito_detail_backfill.AsyncSession` mock seam used by
tests/tasks/test_avito_detail_backfill.py -- swapping to the helper would call
curl_cffi's AsyncSession via scraper_kit.providers._base instead, silently
bypassing that patch target.
scrape_pipeline.py itself is untouched (kept its own copies, per Part E plan).
Full backend suite: 3276 passed, 1 known-unrelated fail (test_search_cache_hit,
#2208), 6 skipped.
