feat: enhance scraper reliability, observability and scheduling

Implement advanced UI features and export options

Implement rate limit bypass, smart fallback scraping, and price alerts

Separate Airbnb and Booking results into distinct sections and increase to top 15 each

Fix availability check (Incident 0001563/2026) and improve scraper robustness

feat: add advanced search options (adults, children, pets, dynamic budget)

chore: enable debug mode (no fallbacks for prices/images) to identify scraper gaps

feat: robust pattern-based parser for firecrawl and aggressive env discovery

fix: use direct Firecrawl API and add health diagnostics

fix: eliminate all fake data fallbacks and enforce cloud-compatible browser flags

fix: smarter airbnb parsing and improved image variety

fix: use Playwright base image and add progress logging

feat: prepare for hugging face deployment (docker, metadata, relative api)

feat: implement web dashboard with fastapi backend and interactive frontend