flow-next-pilot

# `/flow-next:pilot` is now `/flow-next:flow --auto --tick` Print exactly one line to stderr, then invoke the `flow-next-flow` skill with the arguments rewritten as below: ```bash echo "pilot is now flow --auto --tick; this alias is removed in the next release" >&2 ``` Argument mapping (every pilot argument has a place; nothing is dropped): | Pilot argument | Flow argument | |---|---| | `--spec <id>` or `--spec=<id>` | the positional `<id>` | | `--backlog` or `--auto` (pilot's backlog switch) | `--backlog` | | `--dry-run` | `--explain` (`--dry-run` is also accepted for this release) | | `--review=<backend>`, `--research=<grep|rp>`, `--depth=<level>`, `--until=merge` | passed through unchanged |