Fix alert audio not playing: resolve sounds dir from plugin root

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 --- 3.0 ---
 
+* bug: Restore alert audio for down and triggered devices; getMonitorSound() looked for sounds in includes/sounds/ after the controller moved, so the audio element was never rendered
 * feature: Replace the single Status column/filter with a multi-select Events filter (additive) and an Events column that shows a short pill per active event (Down, Recovering, Triggered, Down/Triggered M/A, Warn/Alert Ping, Failed Svc), 'None' when clean; the Status scope dropdown now only selects All Monitored / All Devices / Not Monitored / Without Thresholds
 * bug: Centre the tile hostname under the glyph and keep it clickable in the Tiles & Time view
 * bug: Remove the 'Names only' View option from the dropdown (the renderer is retained for direct ?view=names use)

includes/controller.php

@@ -259,7 +259,7 @@ function isMonitorAudible(): bool {
 function getMonitorSound(): string {
 	$sound = (string) read_user_setting('monitor_sound', read_config_option('monitor_sound'));
 	clearstatcache();
-	$file   = __DIR__ . '/sounds/' . $sound;
+	$file   = dirname(__DIR__) . '/sounds/' . $sound;
 	$exists = file_exists($file);
 
 	return $exists ? $sound : '';

tests/Integration/MonitorSoundPathTest.php

@@ -0,0 +1,19 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ +-------------------------------------------------------------------------+
+ | Cacti: The Complete RRDTool-based Graphing Solution                     |
+ +-------------------------------------------------------------------------+
+*/
+
+it('resolves the alert sound against the plugin sounds directory', function () {
+	$root     = dirname(__DIR__, 2);
+	$contents = file_get_contents($root . '/includes/controller.php');
+
+	expect($contents)->not->toBeFalse();
+	expect($contents)->toContain("dirname(__DIR__) . '/sounds/'");
+	expect($contents)->not->toContain("__DIR__ . '/sounds/'");
+	expect(is_dir($root . '/sounds'))->toBeTrue();
+	expect(is_dir($root . '/includes/sounds'))->toBeFalse();
+});