The /crawl endpoint now accepts an optional crawler_configs field
(list of CrawlerRunConfig dicts) alongside the existing crawler_config.
When provided with multiple URLs, each config is deserialized and passed
as a list to arun_many(), enabling per-URL configuration with url_matcher
patterns. Single-URL requests and requests without crawler_configs are
unchanged (backward compatible).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
