Changed --priority flag from string values (low/normal/high/urgent) to
numeric values (0-4) to match bd mail send interface:
- 0 = urgent/critical
- 1 = high
- 2 = normal (default)
- 3 = low
- 4 = backlog
Also added --urgent flag as shortcut for --priority 0.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>