feat(tradein): avito_detail.py — detail page parser (30+ fields incl. domoteka)
Stage 2b of AvitoScraper_v2.
- fetch_detail(item_url) — async HTTP via curl_cffi.AsyncSession (chrome120)
- parse_detail_html(html, source_url) — pure selectolax parser (fixture-testable)
- DetailEnrichment dataclass — 30+ fields:
* Identity (item_id, title, price, publish_date, views)
* Apartment params (rooms/area/floor/balcony_loggia/room_layout/bathroom/windows/repair/sale_type/mortgage)
* Location (lat/lon/avito_location_id/metro_stations[]/address_full)
* House params (house_type/total_floors_house/lifts/concierge/closed_yard/house_catalog_url)
* Description
* Domoteka 5 fields (owners_count + owners_at_least + last_owner_change_date + encumbrances_clean + registry_match)
* Gallery (photo_urls[])
- save_detail_enrichment(db, e) — UPDATE listings SET 25+ cols WHERE source_id, sets detail_enriched_at=NOW()
- pytest test_avito_detail_parse — 10 fixture tests, all passing
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