fix(sling): auto-apply mol-polecat-work (#288) and fix wisp orphan lifecycle bug (#842)
Fixes the formula-on-bead pattern to hook the base bead instead of the wisp:
- Auto-apply mol-polecat-work when slinging bare beads to polecats
- Hook BASE bead with attached_molecule pointing to wisp
- gt done now closes attached molecule before closing hooked bead
- Convoys complete properly when work finishes
Fixes#288, #842, #858
