- Add ensure_utf8_streams() in output.py: reconfigures stdout/stderr to UTF-8
on Windows at CLI startup, fixing emoji UnicodeEncodeError on GBK locales
- Call ensure_utf8_streams() in cli() entry point — one-line fix for all
output paths (click.echo, rich Console, print)
- Add Windows ConPTY troubleshooting to README (English + Chinese):
document Git Bash workaround, ConPTY pipe capture issue, and encoding notes
Ref: #29 (issuecomment-4065690862)