fix(commands): point set.mode description at the schema enum

Old description said "auto / manual" but the schema declares four modes
(auto, virtualControl, fysicalControl, maintenance). New description
enumerates the allowed values and refers readers to the schema as the
source of truth. wiki-gen regenerated Reference-Contracts.md to match.

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

src/commands/index.js

@@ -12,7 +12,7 @@ module.exports = [
     topic: 'set.mode',
     aliases: ['setMode'],
     payloadSchema: { type: 'string' },
-    description: 'Switch the valve group between auto / manual control modes.',
+    description: 'Switch the operating mode. Allowed: `auto`, `virtualControl`, `fysicalControl`, `maintenance` (schema-validated in `valveGroupControl.json` → `mode.current`).',
     handler: handlers.setMode,
   },
   {

wiki/Reference-Contracts.md

@@ -19,7 +19,7 @@ The registry lives in `src/commands/index.js`. Each descriptor maps a canonical
 
 | Canonical topic | Aliases | Payload | Unit | Effect |
 |---|---|---|---|---|
-| `set.mode` | `setMode` | `string` | — | Switch the valve group between auto / manual control modes. |
+| `set.mode` | `setMode` | `string` | — | Switch the operating mode. Allowed: `auto`, `virtualControl`, `fysicalControl`, `maintenance` (schema-validated in `valveGroupControl.json` → `mode.current`). |
 | `set.position` | `setpoint` | any | — | Set the group-level valve position (currently a no-op pending Phase 7). |
 | `child.register` | `registerChild` | `string` | — | Register a child valve with this group. |
 | `cmd.execSequence` | `execSequence` | `object` | — | Run a group-wide sequence (startup / shutdown / emergencystop). |