Windows pre-commit fix: check-old-precice.py crashes on UTF-8 files (UnicodeDecodeError)

[Flamki]

I found and fixed a Windows-specific pre-commit failure in check-old-precice.py.

Problem

check-old-precice.py used Path.read_text() without explicit encoding.
On Windows, this can default to CP1252 and crash on UTF-8 markdown files with:

UnicodeDecodeError: ‘charmap’ codec can’t decode byte …

Fix

In check-old-precice.py:

• read old-precice.txt with encoding=“utf-8”

• read scanned files with encoding=“utf-8”, errors=“replace”

This makes behavior deterministic across platforms and prevents Windows-only crashes.

Validation

Ran successfully:

• tooling-overview.md

• check-old-precice.py

Ready branch

• Branch: Flamki:issue-windows-encoding-check-old-precice

• Commit: 6152e13826f

• Compare link:
  Comparing precice:master...Flamki:issue-windows-encoding-check-old-precice · precice/precice.github.io · GitHub

I could not open a PR directly because repo interactions are restricted to collaborators for my account.