Full provider database as CSV

One row per provider × product type (providers without products get one row). Columns: slug, name, website, listing_status, type, pricing_model, price_from_usd, price_unit, entry_price_usd, pool_size, countries, targeting, protocols, sticky_sessions, ipv6, free_trial, refund_days, kyc, payment_methods, api_access, founded, hq_country, score, live_status, confidence, checked_at, page, country_codes, rotation, max_session_minutes, max_concurrency, unlimited_concurrency, unlimited_bandwidth, traffic_never_expires, traffic_expiry_days, price_tier_count, parent_company, auth_methods, support_channels, support_24_7, certifications, ip_sourcing_methods, trustpilot_rating, trustpilot_reviews, pricing_url, purchase_scope, purchase_minimum, purchase_renewal, purchase_retention, purchase_trial, purchase_refund, purchase_checked_at, purchase_review_due_at, purchase_sources, purchase_statuses, operation_scope, operation_concurrency, operation_session_duration, operation_traffic_expiry, operation_country_list, operation_price_ladder, operation_statuses, operation_checked_at, operation_review_due_at, operation_sources. List cells are joined with "|". Same caching and validators as /dataset.