chore(psalm): update psalm.xml

Signed-off-by: Vitor Mattos <vitor@php.rio>

Author: vitormattos

psalm.xml

@@ -2,8 +2,12 @@
 <!-- SPDX-FileCopyrightText: 2026 LibreCode coop and contributors -->
 <!-- SPDX-License-Identifier: AGPL-3.0-or-later -->
 <psalm
+    errorBaseline="tests/psalm-baseline.xml"
     errorLevel="3"
+    findUnusedBaselineEntry="true"
+    findUnusedCode="false"
     phpVersion="8.2"
+    resolveFromConfigFile="true"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
@@ -16,10 +20,4 @@
         </ignoreFiles>
     </projectFiles>
 
-    <issueHandlers>
-        <MissingOverrideAttribute errorLevel="info" />
-        <PossiblyUnusedMethod errorLevel="info" />
-        <PossiblyUnusedProperty errorLevel="info" />
-        <UnusedClass errorLevel="info" />
-    </issueHandlers>
 </psalm>