## Why
Codex worktrees need to inherit the ignored `user.bazelrc` file so Bazel
keeps using local developer settings. `.worktreeinclude` expresses that
copy declaratively, so the dedicated setup script is no longer needed.
## What
- add `user.bazelrc` to `.worktreeinclude`
- remove the Python copy script and its environment setup hook
## Validation
- `git diff --check`
- confirmed `git check-ignore -v user.bazelrc` matches `.gitignore`
