- 5 descriptors -> unit: shorthand (cmd.calibrate.volume/level, set.inflow/
outflow/demand).
- setInflow/setOutflow: drop the hand-rolled scalar-vs-object parsing — the
registry now normalises every shape to a number in the descriptor unit; the
handlers become guarded one-liners (matching setDemand).
- Regenerate wiki topic-contract + command-envelope note (msg.origin).
143/143 tests green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>