- antibot_detector: add <pre> to content elements regex, detect
browser-wrapped JSON in _looks_like_data() so httpbin-style
responses are not flagged as blocked
- deep_crawling/filters: use urlparse().path for path-only prefix
patterns (/docs/*) instead of matching against full URL, which
always failed; full-URL prefixes still match correctly
- async_configs: add PDFContentScrapingStrategy to
ALLOWED_DESERIALIZE_TYPES so /crawl API can deserialize it
- __init__: export PDFContentScrapingStrategy for type resolution
- tests: add 86-test suite covering all three fixes with adversarial
and edge cases
