fix: EDT while navigation

modules/spring-web/src/main/kotlin/com/explyt/spring/web/view/EndpointsToolWindow.kt

@@ -35,7 +35,6 @@ import com.intellij.openapi.actionSystem.impl.ActionButton
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.ModalityState
 import com.intellij.openapi.application.ReadAction
-import com.intellij.openapi.application.runReadAction
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.ui.SimpleToolWindowPanel
 import com.intellij.psi.PsiElement
@@ -149,7 +148,11 @@ class EndpointsToolWindow(private val project: Project) :
 
     private fun navigation(closestPathForLocation: TreePath?) {
         val lastUserObject = TreeUtil.getLastUserObject(closestPathForLocation)
-        runReadAction { (lastUserObject as? EndpointNavigable)?.navigate() }
+        val navigable = (lastUserObject as? EndpointNavigable) ?: return
+        // Schedule navigation on the EDT: invokeLater runs the action under a
+        // write-intent read action, which is required since 253 to open a file
+        // editor and at the same time covers PSI read access inside navigate().
+        ApplicationManager.getApplication().invokeLater { navigable.navigate() }
     }
 
     private fun createRefreshButton(): JComponent {

modules/spring-web/src/main/kotlin/com/explyt/spring/web/view/nodes/EndpointNavigatable.kt

@@ -18,5 +18,15 @@
 package com.explyt.spring.web.view.nodes
 
 interface EndpointNavigable {
+    /**
+     * Performs navigation to the underlying PSI element.
+     *
+     * Implementations access PSI and open a file editor, both of which require
+     * the EDT under a write-intent read action. Callers must invoke this from
+     * the EDT (e.g. via [com.intellij.openapi.application.Application.invokeLater]),
+     * not from a plain read action — opening an editor cannot be performed
+     * from inside a `ReadAction` ("WriteIntentReadAction can not be called
+     * from ReadAction", since 253).
+     */
     fun navigate()
-}
+}

modules/spring-web/src/main/kotlin/com/explyt/spring/web/view/nodes/HttpMethodNode.kt

@@ -56,4 +56,4 @@ class HttpMethodNode(
     override fun navigate() {
         (httpElement.psiPointer.element?.navigationElement as? Navigatable)?.navigate(true)
     }
-}
+}

modules/spring-web/src/main/kotlin/com/explyt/spring/web/view/nodes/SpringBootClassNode.kt

@@ -40,4 +40,4 @@ class SpringBootClassNode(
     override fun navigate() {
         (viewData?.psiPointer?.element?.navigationElement as? Navigatable)?.navigate(true)
     }
-}
+}