Arkwright 2.0 – ChatGPT 4o Log Importer

Setup:
1. Place conversations.json inside /imports/
2. Ensure config.php contains:
   - $pdo (PDO MySQL connection)
   - $OPENAI_API_KEY
3. Create required database tables (messages + embeddings)
4. Run from CLI:

   php cli/import_4o_logs.php

For large exports, disable embeddings during import and process in batches.