Windows cp932 crashes unattended Claude Code job with UnicodeEncodeError

The author's scripts come from Claude Code — small automations for scheduled posting, product tallies and nightly log keeping — and the crash is described as a first-hand incident, not a hypothetical. What makes it worth writing down is the gap between two ways of launching the same file: the terminal that worked and the scheduler that did not. The write-up names the specific differences that produce that gap — the execution user, the working folder, environment variables, and which Python version PATH resolves to — and recommends running the task once through its own "Run" command before waiting for night. The remaining two checks apply after a crash rather than before: report a broken streak of successes instead of the failure itself, and confirm how far a write job got before re-running it, so posts or sends are not doubled. The author says these items come from a free 25-item checklist, and that this piece is its "7. Execution environment" section.