From 2d6dcd782f5e4e6523b7305d47157d1672625764 Mon Sep 17 00:00:00 2001
From: Jared Vititoe <jjvititoe1@gmail.com>
Date: Mon, 11 May 2026 23:26:53 -0400
Subject: [PATCH] Cancel in-flight diagnostic poll when user selects a new port

Previously switching ports while a diagnostic was running left the
setInterval timer active, causing the result to be written into the
old (now detached) DOM elements and never shown to the user.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 templates/inspector.html | 1 +
 1 file changed, 1 insertion(+)

diff --git a/templates/inspector.html b/templates/inspector.html
index 7780ad2..baf9465 100644
--- a/templates/inspector.html
+++ b/templates/inspector.html
@@ -218,6 +218,7 @@ let _apiData        = null;
 function selectPort(el) {
   const swName = el.dataset.switch;
   const idx    = parseInt(el.dataset.portIdx, 10);
+  if (_diagPollTimer) { clearInterval(_diagPollTimer); _diagPollTimer = null; }
   document.querySelectorAll('.switch-port-block.selected')
     .forEach(e => e.classList.remove('selected'));
   el.classList.add('selected');