UnicodeEncodeError on Windows: report printing crashes on cp1252 in focused mode

Environment

• Windows 11, PowerShell, console codepage cp1252
• Python 3.14.3, yt-dlp 2026.08.16 nightly, ffmpeg N-124716
• Claude Code v2.1.222, skill installed manually to ~/.claude/skills/watch

What happens

Frame extraction, dedup, and transcript all complete successfully. The run then dies while printing its own report:

UnicodeEncodeError, watch.py:280

Cause

watch.py:280 emits U+2192 RIGHTWARDS ARROW in the Focus range line:

f"- **Focus range:** {format_time(effective_start)} \u2192 {format_time(effective_end)} "

Python's stdout defaults to cp1252 on Windows, which cannot encode it. Because that line sits inside if focused:, the crash only reproduces when --start or --end is passed; full-video runs skip it.

Note there is also an em dash at watch.py:266 on the "no audio stream found" stderr path, so escaping the arrow alone would leave a second landmine.

Repro

/watch <any URL> --detail efficient --start 0 --end 10 <question>

Suggested fix

Force UTF-8 at the top of main() rather than escaping individual characters:

if hasattr(sys.stdout, "reconfigure"):
    sys.stdout.reconfigure(encoding="utf-8", errors="replace")
    sys.stderr.reconfigure(encoding="utf-8", errors="replace")

Workaround

PYTHONIOENCODING=utf-8, or setx PYTHONUTF8 1 for the user account.