PR Summary:

• Adds an overwrite notification in _merge_publish_into_bin when a file is being replaced during the build merge step.
• Fixes _ensure_path_registered to store the original dest_path in config instead of the normcase()-processed (lowercased on Windows) norm_dest.

Review Summary:

Both changes are small, correct, and well-scoped. The script.py fix addresses a real bug: the old code appended norm_dest (the result of os.path.normcase(os.path.normpath(dest_path))) to the config list, which on Windows produces an all-lowercase path — visually wrong and potentially inconsistent with how pyRevit discovers extensions by path comparison. The fix correctly stores the human-readable original path. The _labs.py change is purely informational, adding build-time visibility when files are overwritten during dependency merging. No issues found with IronPython 2.7 compatibility (the extension script uses # -*- coding: utf-8 -*- and no IP2-incompatible constructs), PEP 8 naming, or black formatting.

Suggestions

• Add a os.path.abspath call on dest_path before passing it into _ensure_path_registered to handle relative paths robustly. Apply
• Add a blank line before the _get_default_ext_dir function definition (line 70) to satisfy PEP 8 two-blank-line rule between top-level functions. Apply