docs(wiki): regenerate topic-contract AUTOGEN block via wiki-gen

Replaces the agent-written placeholder inside Reference-Contracts.md with
the authoritative table generated from src/commands/index.js. Both the
BEGIN and END markers are normalized to the canonical form used by
`@evolv/wiki-gen`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

wiki/Reference-Contracts.md

@@ -13,12 +13,12 @@ Full topic contract, configuration schema, and child-registration filters for `s
 
 The registry lives in `src/commands/index.js`. Each descriptor maps a canonical `msg.topic` to its handler; aliases emit a one-time deprecation warning the first time they fire.
 
-<!-- BEGIN AUTOGEN: topic-contract — populate via wiki-gen tool (TODO) -->
+<!-- BEGIN AUTOGEN: topic-contract -->
 
 | Canonical topic | Aliases | Payload | Unit | Effect |
-|:---|:---|:---|:---|:---|
-| `data.influent` | `influent`, `setInfluent` | `{F: number, C: number[13]}` &mdash; either field optional | `F` in m³/h, `C[*]` in mg/L | Replaces influent flow and/or the 13-species concentration vector on the domain (`source.F_in`, `source.Cs_in`). Triggers `notifyOutputChanged`, which re-emits the 3-stream Fluent envelope on Port 0. |
-| `child.register` | `registerChild` | `string` (child node id) | &mdash; | Register a child node (measurement / reactor / machine) with this settler. Port 2 wiring does this automatically in normal flows; the explicit handler exists because `BaseNodeAdapter` does not have an implicit registration path. |
+|---|---|---|---|---|
+| `data.influent` | `influent`, `setInfluent` | any | — | Push the influent stream (payload: {F: flow m3/h, C: [concentrations mg/L]}). |
+| `child.register` | `registerChild` | `string` | — | Register a child node (typically a measurement) with this settler. |
 
 <!-- END AUTOGEN: topic-contract -->