Find the most repeated code fragments code and AST snapshot of a repository

Once the bot found repeated code it should create a pull request to fix it. The bot should ask in the pull request how to name the function/method and where to place it. Each time the default branch is updated, bot should pull the default branch resolve the conflicts or reapply the changes.

The issue does not name any files, tests, or entry points. Start by locating the repeated-code detection and AST snapshot flow, then determine how pull requests should ask about function naming and placement and how updates to the default branch should trigger conflict resolution or reapplication. Done means these behaviors are specified and implemented end to end.

Written by the indexing model from the issue text.