Replaced `pathlib.Path.rglob("*")` with `os.walk(topdown=True)` in `scripts/ci_validate_repo.py` to prune large directories like `.git` and `node_modules` in-place. This avoids unnecessary traversal and syscalls, improving CI validation performance.
Also:
- Fixed indentation logic in file scanning loop.
- Renamed inner loop variable to avoid shadowing.
- Documented learning in `.jules/bolt.md`.
- Consolidate file validation logic into a single loop
- Check file size before reading content to prevent loading large files into memory
- Add error handling for file reading
- Reduce I/O operations and loop iterations
This improves the efficiency of the CI validation script, especially for repositories with many files or when large files are accidentally introduced.
