feat: add real A101 scraper for fruit and vegetables

[saba-github]

What changed

• Added a real A101 scraper for fruit_veg

• Integrated A101 into the existing raw → staging → fact pipeline

• Split A101 fruit and vegetable scraping into:

  • meyve-sebze/meyve
  • meyve-sebze/sebze
  • meyve-sebze/yesillik

• Fixed A101 section parsing by extracting products from body text sections

• Added fallback unit normalization from product names

• Enabled A101 records to flow into fact_price_observations

Result

Latest successful A101 run loaded:

• 38 scraped records
• 38 raw records
• 38 staging records
• 38 fact records

Category distribution:

• Meyve: 16
• Sebze: 22

Notes

• Yeşillik parsing still needs improvement in a future iteration
• Current implementation is stable enough to merge and continue product-level development