fix(kilo-jetbrains): restore last kilo settings page

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/actions/OpenSettingsAction.kt

@@ -1,7 +1,7 @@
 package ai.kilocode.client.actions
 
 import ai.kilocode.client.plugin.KiloBundle
-import ai.kilocode.client.settings.KiloSettingsConfigurable
+import ai.kilocode.client.settings.KiloSettingsSelection
 import ai.kilocode.client.telemetry.Telemetry
 import com.intellij.openapi.actionSystem.ActionUpdateThread
 import com.intellij.openapi.actionSystem.AnActionEvent
@@ -9,6 +9,7 @@ import com.intellij.openapi.options.Configurable
 import com.intellij.openapi.options.ConfigurableWithId
 import com.intellij.openapi.options.ShowSettingsUtil
 import com.intellij.openapi.project.DumbAwareAction
+import com.intellij.openapi.project.ProjectManager
 import java.util.function.Predicate
 
 class OpenSettingsAction : DumbAwareAction(
@@ -18,10 +19,12 @@ class OpenSettingsAction : DumbAwareAction(
 ) {
     override fun actionPerformed(e: AnActionEvent) {
         Telemetry.send("Settings Opened", mapOf("surface" to "tool_window"))
+        val project = e.project ?: ProjectManager.getInstance().defaultProject
+        val target = KiloSettingsSelection.target(project)
         ShowSettingsUtil.getInstance().showSettingsDialog(
-            e.project,
+            project,
             Predicate { cfg: Configurable ->
-                cfg is ConfigurableWithId && cfg.getId() == KiloSettingsConfigurable.ID
+                cfg is ConfigurableWithId && cfg.getId() == target
             },
             null,
         )

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/settings/KiloSettingsSelection.kt

@@ -0,0 +1,21 @@
+package ai.kilocode.client.settings
+
+import ai.kilocode.client.settings.profile.UserProfileConfigurable
+import com.intellij.ide.util.PropertiesComponent
+import com.intellij.openapi.project.Project
+
+internal object KiloSettingsSelection {
+    // IntelliJ persists the selected settings page with SettingsEditor.SELECTED_CONFIGURABLE.
+    const val SELECTED_CONFIGURABLE_KEY = "settings.editor.selected.configurable"
+
+    fun target(project: Project): String {
+        val id = PropertiesComponent.getInstance(project).getValue(SELECTED_CONFIGURABLE_KEY)
+        if (id != null && isKilo(id)) return id
+        return UserProfileConfigurable.ID
+    }
+
+    private fun isKilo(id: String?): Boolean {
+        if (id == KiloSettingsConfigurable.ID) return true
+        return id?.startsWith("${KiloSettingsConfigurable.ID}.") == true
+    }
+}

packages/kilo-jetbrains/frontend/src/test/kotlin/ai/kilocode/client/settings/KiloSettingsSelectionTest.kt

@@ -0,0 +1,43 @@
+package ai.kilocode.client.settings
+
+import ai.kilocode.client.settings.models.ModelsConfigurable
+import ai.kilocode.client.settings.profile.UserProfileConfigurable
+import com.intellij.ide.util.PropertiesComponent
+import com.intellij.testFramework.fixtures.BasePlatformTestCase
+
+class KiloSettingsSelectionTest : BasePlatformTestCase() {
+
+    override fun tearDown() {
+        try {
+            PropertiesComponent.getInstance(project).unsetValue(KiloSettingsSelection.SELECTED_CONFIGURABLE_KEY)
+        } finally {
+            super.tearDown()
+        }
+    }
+
+    fun `test falls back to profile when no last settings page exists`() {
+        assertEquals(UserProfileConfigurable.ID, KiloSettingsSelection.target(project))
+    }
+
+    fun `test falls back to profile when last page is not kilo`() {
+        select("preferences.lookFeel")
+
+        assertEquals(UserProfileConfigurable.ID, KiloSettingsSelection.target(project))
+    }
+
+    fun `test keeps last kilo root page`() {
+        select(KiloSettingsConfigurable.ID)
+
+        assertEquals(KiloSettingsConfigurable.ID, KiloSettingsSelection.target(project))
+    }
+
+    fun `test keeps last kilo child page`() {
+        select(ModelsConfigurable.ID)
+
+        assertEquals(ModelsConfigurable.ID, KiloSettingsSelection.target(project))
+    }
+
+    private fun select(id: String) {
+        PropertiesComponent.getInstance(project).setValue(KiloSettingsSelection.SELECTED_CONFIGURABLE_KEY, id)
+    }
+}