Add CustomProxyProvider (single endpoint or rotating pool via Scrapling ProxyRotator), registered as 'custom' alongside anonymous_proxies and selectable via PROXY_PROVIDER. Adds is_pool_backed to the ProxyProvider ABC + a zero-arg package helper. The web crawler does a bounded one-per-tier is_proxy_error rotation-retry gated on is_pool_backed() (single-endpoint providers no-op). Config/.env.example gain CUSTOM_PROXY_URL(S). Zero-arg getter contract unchanged for all consumers. Documents the proprietary boundary test (generic proxy infra stays Apache-2). Tests: provider, registry, crawler rotation (16).
Co-authored-by: Cursor <cursoragent@cursor.com>
- Standardized the web crawler to use Scrapling exclusively, removing Firecrawl entirely.
- Updated the crawler's location to `app/proprietary/web_crawler/connector.py` under a non-Apache-2 license boundary.
- Refactored the `WebCrawlerConnector` to eliminate the Firecrawl API key dependency, simplifying the interface for crawling URLs.
- Adjusted related components to accommodate the new structure and ensure successful crawl outcomes are properly handled.
- Updated documentation to reflect these changes and the new implementation status.
Apply the same rename to surfsense_backend/tests: workspace_id fields/vars,
Workspace* classes/schemas, table name searchspaces -> workspaces in raw SQL,
and the API URL spellings -> /workspaces. Preserves the carve-out wire literals
tests assert (Celery task names, OTel key "search_space.id").
