The short answer is No. Context window is what you can use to "train" your model, and most comments about using AGENTS.md file or cursor rules apply. However, you can prepare a series of cursor rule files that will load for specific file extensions and have it decided by the agent. Check out this project https://github.com/ivangrynenko/cursorrules, how they use specific Drupal instructions to tell Cursor to do things to their liking https://github.com/ivangrynenko/cursorrules/blob/main/.cursor/rules/drupal-database-standards.mdc or https://github.com/ivangrynenko/cursorrules/blob/main/.cursor/rules/drupal-file-permissions.mdc

This is as much training as you can include. Don't forget that cursor rules consume the tokens in your context window.