P11.6 wiki regen + Phase 10 private-test rewrites where applicable

For all 11 nodes with auto-gen markers: wiki/Home.md sections 5 (topic
contract) and 9 (data model) regenerated via npm run wiki:all. New
Unit column shows '<measure> (default <unit>)' for declared topics,
'—' otherwise. Effect column now uses descriptor.description (P11.2
field) overriding the generic per-prefix fallback.

For rotatingMachine + reactor: Phase 10 test rewrites — 3 + 8 files
moved off private nodeClass internals (_attachInputHandler, _commands,
_pendingExtras, _registerChild, _tick, etc.) to the public
BaseNodeAdapter surface (node.handlers.input, node.source.*).
+6 / +7 net new tests.

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

test/basic/register-child.basic.test.js

@@ -1,32 +1,84 @@
+'use strict';
+
+// Phase 10 rewrite: drives only the public BaseNodeAdapter surface.
+// The pre-refactor _registerChild method was renamed to
+// _scheduleRegistration inside BaseNodeAdapter and now fires automatically
+// 100ms after construction. We verify the emission by capturing the Port-2
+// message on `node.sends` after the registration delay elapses.
+
 const test = require('node:test');
 const assert = require('node:assert/strict');
 
-const NodeClass = require('../../src/nodeClass');
-const { makeNodeStub } = require('../helpers/factories');
+const nodeClass = require('../../src/nodeClass');
+const { makeUiConfig } = require('../helpers/factories');
 
-// Post-refactor: BaseNodeAdapter handles registration via _scheduleRegistration
-// (was _registerChild). Topic moved from 'registerChild' to 'child.register'.
-test('_scheduleRegistration emits delayed child.register message on output 2', () => {
-  const inst = Object.create(NodeClass.prototype);
-  const node = makeNodeStub();
+function makeRED() { return { nodes: { getNode: () => null } }; }
 
-  inst.node = node;
-  inst.config = { functionality: { positionVsParent: 'downstream', distance: null } };
+function makeNode(id = 'reactor-node-1') {
+  const sends = [];
+  const statuses = [];
+  const handlers = {};
+  return {
+    id, sends, statuses, handlers,
+    send(arr)  { sends.push(arr); },
+    status(b)  { statuses.push(b); },
+    on(ev, fn) { handlers[ev] = fn; },
+    warn() {}, error() {},
+  };
+}
 
-  const originalSetTimeout = global.setTimeout;
-  const delays = [];
-  global.setTimeout = (fn, ms) => { delays.push(ms); fn(); return 1; };
+function closeNode(node) {
+  if (node.handlers.close) node.handlers.close(() => {});
+}
+
+test('scheduled child.register message lands on Port 2 after construction', async () => {
+  const node = makeNode();
+  const inst = new nodeClass(
+    makeUiConfig({ positionVsParent: 'downstream' }),
+    makeRED(),
+    node,
+    'reactor',
+  );
 
   try {
-    inst._scheduleRegistration();
-  } finally {
-    global.setTimeout = originalSetTimeout;
-  }
+    // BaseNodeAdapter._scheduleRegistration uses a 100ms setTimeout; wait
+    // slightly longer to let it fire.
+    await new Promise((r) => setTimeout(r, 130));
 
-  assert.deepEqual(delays, [100]);
-  assert.equal(node._sent.length, 1);
-  assert.equal(Array.isArray(node._sent[0]), true);
-  assert.equal(node._sent[0][2].topic, 'child.register');
-  assert.equal(node._sent[0][2].payload, node.id);
-  assert.equal(node._sent[0][2].positionVsParent, 'downstream');
+    // The registration send is the [null, null, {child.register}] triple.
+    const regSends = node.sends.filter(
+      (s) => Array.isArray(s) && s[0] === null && s[1] === null && s[2] && s[2].topic === 'child.register',
+    );
+    assert.equal(regSends.length, 1, 'exactly one child.register message expected');
+    const msg = regSends[0][2];
+    assert.equal(msg.topic, 'child.register');
+    assert.equal(msg.payload, node.id);
+    assert.equal(msg.positionVsParent, 'downstream');
+    // After construction the source is exposed on the node for sibling lookup.
+    assert.strictEqual(node.source, inst.source);
+  } finally {
+    closeNode(node);
+  }
+});
+
+test('child.register handler ignores unknown child ids without throwing', async () => {
+  const node = makeNode();
+  const inst = new nodeClass(makeUiConfig(), makeRED(), node, 'reactor');
+
+  try {
+    let done = 0;
+    await assert.doesNotReject(async () => {
+      await node.handlers.input(
+        { topic: 'child.register', payload: 'missing-child', positionVsParent: 'upstream' },
+        () => {},
+        () => { done += 1; },
+      );
+    });
+    assert.equal(done, 1);
+    // No child should have been registered into the engine's registry.
+    const registered = inst.source.engine.childRegistrationUtils;
+    assert.ok(registered, 'childRegistrationUtils exists on engine');
+  } finally {
+    closeNode(node);
+  }
 });