fix: reconfigure stdout/stderr to UTF-8 on Windows to prevent charmap encoding errors

[cristipufu]

Summary

• Fix 'charmap' codec can't encode character errors on Windows by reconfiguring stdout/stderr to UTF-8 early in CLI
  initialization
• Windows console defaults to codepages (e.g. cp1252) that can't encode Unicode characters used by Rich spinners
  (Braille) and emoji output

Why this approach

Most popular Python CLIs (Rich, Click, pip) don't fix this themselves, they either document PYTHONUTF8=1 as a
user-side workaround, or avoid Unicode characters entirely.

Python 3.15 will make UTF-8 the default everywhere (https://peps.python.org/pep-0686/), but until then every Python
CLI on Windows is affected.

We chose sys.stdout.reconfigure(encoding="utf-8") over alternatives because:

• PYTHONUTF8=1 can't be set programmatically: Python reads it at startup, so it would require users to configure it
  themselves
• Avoiding Unicode characters limits UX (no spinners, no emoji)
• reconfigure is scoped to stdout/stderr only, doesn't change behavior of open() or file system encoding, and is
  automatic for the user

Modern terminals (Windows Terminal, PowerShell 7, VS Code) already expect UTF-8, this fix just aligns Python's output
encoding with what they want. On legacy terminals, it prevents crashes (characters may render imperfectly but won't
throw exceptions).

[Copilot]

Pull request overview

This PR fixes a Windows-specific encoding issue where the console's default codepage (e.g., cp1252) cannot handle Unicode characters used by Rich library components like Braille spinners and emoji output. The fix reconfigures stdout and stderr to UTF-8 encoding on Windows systems at CLI initialization time, before any heavy imports are loaded.

Changes:

• Version bump from 2.9.14 to 2.9.15
• Added Windows UTF-8 stream reconfiguration in CLI initialization

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
uv.lock	Updated package version to 2.9.15
pyproject.toml	Bumped version to 2.9.15
src/uipath/_cli/init.py	Added Windows-specific UTF-8 encoding configuration for stdout/stderr to prevent charmap encoding errors with Unicode characters

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.