Remove fast_scraper.py - consolidated into scraper_clean

All functionality now in scraper_clean.py:
- fast_scrape_reviews (main scraper)
- get_business_card_info (validation)

Updated health_checks.py to import from scraper_clean.

Removes 1,935 lines of duplicate/obsolete code.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

modules/health_checks.py

@@ -90,7 +90,7 @@ class CanaryMonitor:
         - Scrape time is reasonable
         - Data structure is valid
         """
-        from modules.fast_scraper import fast_scrape_reviews
+        from modules.scraper_clean import fast_scrape_reviews
 
         log.info(f"Running canary scrape test on {self.test_url[:60]}...")
         self.last_run = datetime.now()