Reference-Contracts.md now carries a concrete `msg = { topic, payload, ... }`
example for each of the 7 input topics (plus the built-in query.units) and for
all three output ports (Port 0 process, Port 1 InfluxDB, Port 2 registration),
plus the emitter-event shape. Shapes verified against commandRegistry unit
normalisation and the process/influxdb formatters. Examples sit outside the
AUTOGEN markers so `npm run wiki:all` stays a no-op on them.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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