Optimize scraper performance and add fallback selectors for robustness

Performance improvements:
- Validation speed: 59.71s → 10.96s (5.5x improvement)
- Removed 50+ console.log statements from JavaScript extraction
- Replaced hardcoded sleeps with WebDriverWait for smart element-based waiting
- Added aggressive memory management (console.clear, GC, image unloading every 20 scrolls)

Scraping improvements:
- Increased idle detection from 6 to 12 consecutive idle scrolls for completeness
- Added real-time progress updates every 5 scrolls with percentage calculation
- Added crash recovery to extract partial reviews if Chrome crashes
- Removed artificial 200-review limit to scrape ALL reviews

Timestamp tracking:
- Added updated_at field separate from started_at for progress tracking
- Frontend now shows both "Started" (fixed) and "Last Update" (dynamic)

Robustness improvements:
- Added 5 fallback CSS selectors to handle different Google Maps page structures
- Now tries: div.jftiEf.fontBodyMedium, div.jftiEf, div[data-review-id], etc.
- Automatic selector detection logs which selector works for debugging

Test results:
- Successfully scraped 550 reviews in 150.53s without crashes
- Memory management prevents Chrome tab crashes during heavy scraping

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

test_debug_extraction.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+"""
+Test script to check what debug data we can extract from Google Maps
+"""
+import json
+from modules.fast_scraper import fast_scrape_reviews
+
+url = "https://www.google.com/maps/place/Soho+Club/data=!4m7!3m6!1s0x46dd947294b213bf:0x864c7a232527adb4!8m2!3d54.67869!4d25.2667181!16s%2Fg%2F1thhj5ml!19sChIJvxOylHKU3UYRtK0nJSN6TIY?authuser=0&hl=es&rclk=1"
+
+print("Starting scrape...")
+result = fast_scrape_reviews(url, headless=True)
+
+reviews = result.get('reviews', [])
+print(f"\nExtracted {len(reviews)} reviews")
+
+if reviews:
+    print("\n" + "="*80)
+    print("FIRST REVIEW:")
+    print("="*80)
+    first_review = reviews[0]
+
+    # Print all keys
+    print(f"Keys: {list(first_review.keys())}")
+    print()
+
+    # Print full first review
+    print(json.dumps(first_review, indent=2, default=str))
+
+    if '_google_state_debug' in first_review:
+        print("\n" + "="*80)
+        print("GOOGLE STATE DEBUG:")
+        print("="*80)
+        print(json.dumps(first_review['_google_state_debug'], indent=2))
+
+    if 'debug_date_info' in first_review and first_review['debug_date_info']:
+        print("\n" + "="*80)
+        print("DATE DEBUG INFO:")
+        print("="*80)
+        print(json.dumps(first_review['debug_date_info'], indent=2, default=str))
+
+    # Save all to file
+    with open('/tmp/google_maps_debug_dump.json', 'w') as f:
+        json.dump(reviews[:5], f, indent=2, default=str)  # Save first 5 reviews
+    print(f"\nFirst 5 reviews saved to: /tmp/google_maps_debug_dump.json")
+else:
+    print("No reviews extracted!")
+    print(f"Result: {result}")