Update all documentation to use the new subcommand syntax:
- `bd daemon --start` → `bd daemon start`
- `bd daemon --stop` → `bd daemon stop`
- `bd daemon --status` → `bd daemon status`
- `bd daemon --health` → `bd daemon status --all`
- `--global=false` → `--local`
The old flag syntax is deprecated but still works with warnings.
Closes: bd-734vd
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>