Issue #249: bottles should be supervised by default. Rather than
remove the flag (which would make supervision mandatory and is the
wrong plane for cost-control enforcement — see #251), keep the
opt-out and flip the default. Bottles that omit `supervise:` now get
the stuck-recovery sidecar; `supervise: false` still skips it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YcU7nerbg8cVj9R4EkpfLJ
didericis