fix(BaseNodeAdapter test): close intervals to unblock batch test runs

Tests 1, 4, 5 constructed an Adapter with the default
statusInterval=1000 and no mock for setInterval, leaking a real
status timer that held the event loop open past the assertions.
Single-file runs masked it; node --test test/basic/ blocked the
whole runner.

Fix: set static statusInterval = 0 + invoke node.handlers.close()
(or mock setInterval where the test asserts on registration timing).
113/113 basic tests pass in batch in ~400 ms.

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

test/basic/BaseNodeAdapter.basic.test.js

@@ -79,6 +79,9 @@ test('full subclass constructs and stores wiring on this', () => {
     class Adapter extends BaseNodeAdapter {
         static DomainClass = Domain;
         static commands = [];
+        // Disable the real status interval — would hold the event loop open
+        // past the test and stall `node --test test/basic/` runs.
+        static statusInterval = 0;
         buildDomainConfig() { return { extra: { foo: 1 } }; }
     }
     const node = makeNode();
@@ -88,6 +91,7 @@ test('full subclass constructs and stores wiring on this', () => {
     assert.equal(node.source, a.source);
     assert.equal(a.config.extra.foo, 1);
     assert.equal(a.config.general.name, 'm1');
+    node.handlers.close(() => {});
 });
 
 // ---- 2-4. Static-field validation -----------------------------------------
@@ -122,17 +126,20 @@ test('static commands = [] is allowed (explicit no-op registry)', () => {
     class Adapter extends BaseNodeAdapter {
         static DomainClass = makeDomain();
         static commands = [];
+        static statusInterval = 0; // see fix in test #1
         buildDomainConfig() { return {}; }
     }
+    const node = makeNode();
     assert.doesNotThrow(
-        () => new Adapter({}, makeRED(), makeNode(), 'measurement'),
+        () => new Adapter(uiConfigFixture(), makeRED(), node, 'measurement'),
     );
+    node.handlers.close(() => {});
 });
 
 // ---- 5. Registration message after 100 ms ---------------------------------
 
 test('registration message fires on Port 2 after 100 ms with child.register', (t) => {
-    t.mock.timers.enable({ apis: ['setTimeout'] });
+    t.mock.timers.enable({ apis: ['setTimeout', 'setInterval'] });
     class Adapter extends BaseNodeAdapter {
         static DomainClass = makeDomain();
         static commands = [];