Commit 712f7a83f5f for nodejs

commit 712f7a83f5fff57412f61932e93ee793bc131e8b
Author: Vas Sudanagunta <vas@commonkarma.org>
Date:   Mon Oct 12 04:51:07 2026 -0400

    doc: add Test Runner to list of built-in diagnostic channels

    Signed-off-by: Vas Sudanagunta <vas@commonkarma.org>
    PR-URL: https://github.com/nodejs/node/pull/66563
    Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
    Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

diff --git a/doc/api/diagnostics_channel.md b/doc/api/diagnostics_channel.md
index d250817aa20..50f364d594f 100644
--- a/doc/api/diagnostics_channel.md
+++ b/doc/api/diagnostics_channel.md
@@ -1930,6 +1930,16 @@ Emitted when [`child_process.spawn()`][] encounters an error.

 Emitted when [`process.execve()`][] is invoked.

+#### Test Runner
+
+<!-- YAML
+added:
+ - v26.1.0
+ - v24.16.0
+-->
+
+See [Test instrumentation and OpenTelemetry][] for details.
+
 #### Web Locks

 > Stability: 1 - Experimental
@@ -2027,6 +2037,7 @@ statement, since both are still in use while the event is being delivered; see
 [`database.close()`][] and [`statement.close()`][].

 [BoundedChannel Channels]: #boundedchannel-channels
+[Test instrumentation and OpenTelemetry]: test.md#test-instrumentation-and-opentelemetry
 [TracingChannel Channels]: #tracingchannel-channels
 [`'uncaughtException'`]: process.md#event-uncaughtexception
 [`--enable-fips-indicator-events`]: cli.md#--enable-fips-indicator-events