Create three HTML fixture files in __tests__/scraper/fixtures/ to support
deterministic testing of the scraper's HTML parsing logic:
- sample-listing.html: Contains 10 real unit articles extracted from the
live listings page, covering studios, 1BR, and 2BR floor plans with
varied pricing and availability dates.
- sample-listing-empty.html: Minimal page structure with an empty units
section, for testing graceful handling of pages with no listings.
- sample-listing-call.html: Contains units with "Call for pricing" instead
of numeric rent values, for testing the parser's handling of non-numeric
price fields.
