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_extract_app_state.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+"""
+Extract Google Maps APP_INITIALIZATION_STATE to find timestamps
+"""
+import json
+from seleniumbase import Driver
+import time
+
+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 browser...")
+driver = Driver(uc=True, headless=False)
+
+try:
+    print(f"Loading URL: {url}")
+    driver.get(url)
+    time.sleep(8)  # Wait for page to fully load
+
+    # Extract global state objects
+    extract_script = """
+    const results = {};
+
+    // Get APP_INITIALIZATION_STATE
+    if (window.APP_INITIALIZATION_STATE) {
+        results.app_init_state = window.APP_INITIALIZATION_STATE;
+    }
+
+    // Get APP_OPTIONS
+    if (window.APP_OPTIONS) {
+        results.app_options = window.APP_OPTIONS;
+    }
+
+    // Get WIZ_global_data
+    if (window.WIZ_global_data) {
+        results.wiz_data = window.WIZ_global_data;
+    }
+
+    return results;
+    """
+
+    print("Extracting global state...")
+    state_data = driver.execute_script(extract_script)
+
+    print(f"\nFound keys: {list(state_data.keys())}")
+
+    # Save to file
+    with open('/tmp/google_maps_app_state.json', 'w') as f:
+        json.dump(state_data, f, indent=2, default=str)
+
+    print("\nApp state saved to: /tmp/google_maps_app_state.json")
+
+    # Try to find review data in the state
+    state_str = json.dumps(state_data)
+    if '"Hace' in state_str:
+        print("\n✅ Found 'Hace' in app state - reviews data is there!")
+    else:
+        print("\n❌ No 'Hace' found in app state")
+
+    # Check for timestamp-like numbers (Unix timestamps are 10-13 digits)
+    import re
+    timestamps = re.findall(r'\b\d{10,13}\b', state_str)
+    if timestamps:
+        print(f"\n✅ Found {len(timestamps)} potential timestamps (10-13 digit numbers)")
+        print(f"Sample: {timestamps[:5]}")
+    else:
+        print("\n❌ No timestamp-like numbers found")
+
+finally:
+    driver.quit()
+    print("\nBrowser closed")