refactor(jetbrains): rename ChatPanel to SessionUi, move UI components to chat.ui

- Rename ChatPanel → SessionUi to match its role as session view layer
- Move LabelPicker, MessageListPanel, PromptPanel, StatusPanel into
  client.chat.ui subpackage
- Clean up qualified references (Component.LEFT_ALIGNMENT → LEFT_ALIGNMENT,
  java.awt.Font → Font, javax.swing.ScrollPaneConstants → import)

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

@@ -1,6 +1,6 @@
 package ai.kilocode.client
 
-import ai.kilocode.client.chat.ChatPanel
+import ai.kilocode.client.chat.SessionUi
 import com.intellij.openapi.actionSystem.ActionManager
 import com.intellij.openapi.components.service
 import com.intellij.openapi.diagnostic.Logger
@@ -13,7 +13,7 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.SupervisorJob
 
 /**
- * Creates the Kilo Code tool window with a single [ChatPanel].
+ * Creates the Kilo Code tool window with a single [SessionUi].
  *
  * The chat panel shows a welcome/status view in the center until the
  * first prompt is sent, then switches to a scrollable message list.
@@ -32,7 +32,7 @@ class KiloToolWindowFactory : ToolWindowFactory, DumbAware {
             val sessions = project.service<KiloSessionService>()
             val scope = CoroutineScope(SupervisorJob())
 
-            val chat = ChatPanel(project, app, workspace, sessions, scope)
+            val chat = SessionUi(project, app, workspace, sessions, scope)
             val content = ContentFactory.getInstance()
                 .createContent(chat, "", false)
             content.setDisposer(chat)

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/chat/SessionUi.kt

@@ -5,6 +5,10 @@ import ai.kilocode.client.KiloProjectService
 import ai.kilocode.client.KiloSessionService
 import ai.kilocode.client.chat.model.SessionEvent
 import ai.kilocode.client.chat.model.SessionModel
+import ai.kilocode.client.chat.ui.LabelPicker
+import ai.kilocode.client.chat.ui.MessageListPanel
+import ai.kilocode.client.chat.ui.PromptPanel
+import ai.kilocode.client.chat.ui.StatusPanel
 import com.intellij.openapi.Disposable
 import com.intellij.openapi.project.Project
 import com.intellij.ui.components.JBScrollPane
@@ -22,11 +26,11 @@ import javax.swing.JPanel
  *
  * All business logic (app/workspace watching, session lifecycle, event
  * handling, status computation) lives in [SessionModel]. Welcome
- * rendering lives in [StatusPanel]. This class handles layout, prompt
+ * rendering lives in [ai.kilocode.client.chat.ui.StatusPanel]. This class handles layout, prompt
  * wiring, message list updates, card switching, picker population,
  * busy state, and scrolling.
  */
-class ChatPanel(
+class SessionUi(
     project: Project,
     app: KiloAppService,
     workspace: KiloProjectService,
@@ -53,9 +57,9 @@ class ChatPanel(
     }
 
     private val prompt = PromptPanel(
-        project = project,
-        onSend = { text -> send(text) },
-        onAbort = { model.abort() },
+      project = project,
+      onSend = { text -> send(text) },
+      onAbort = { model.abort() },
     )
 
     init {

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/chat/ui/LabelPicker.kt

@@ -1,4 +1,4 @@
-package ai.kilocode.client.chat
+package ai.kilocode.client.chat.ui
 
 import com.intellij.icons.AllIcons
 import com.intellij.openapi.ui.popup.JBPopupFactory

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/chat/ui/MessageListPanel.kt

@@ -1,4 +1,4 @@
-package ai.kilocode.client.chat
+package ai.kilocode.client.chat.ui
 
 import ai.kilocode.rpc.dto.MessageDto
 import com.intellij.ui.AnimatedIcon
@@ -7,7 +7,6 @@ import com.intellij.ui.components.JBLabel
 import com.intellij.util.ui.JBUI
 import com.intellij.util.ui.UIUtil
 import java.awt.BorderLayout
-import java.awt.Component
 import java.awt.FlowLayout
 import javax.swing.BoxLayout
 import javax.swing.JPanel
@@ -40,7 +39,7 @@ class MessageListPanel : JPanel(BorderLayout()) {
         isOpaque = false
         isVisible = false
         border = JBUI.Borders.empty(6, 0)
-        alignmentX = Component.LEFT_ALIGNMENT
+        alignmentX = LEFT_ALIGNMENT
         add(JBLabel(AnimatedIcon.Default()))
         add(statusLabel)
     }
@@ -86,7 +85,7 @@ class MessageListPanel : JPanel(BorderLayout()) {
             foreground = JBColor.RED
             font = JBUI.Fonts.label()
             border = JBUI.Borders.empty(4, 0)
-            alignmentX = Component.LEFT_ALIGNMENT
+            alignmentX = LEFT_ALIGNMENT
         }
         inner.add(label, inner.componentCount - 1)
         revalidate()
@@ -129,7 +128,7 @@ private class MessageBlock(info: MessageDto) : JPanel() {
     init {
         layout = BoxLayout(this, BoxLayout.Y_AXIS)
         isOpaque = false
-        alignmentX = Component.LEFT_ALIGNMENT
+        alignmentX = LEFT_ALIGNMENT
 
         border = if (info.role == "user") {
             JBUI.Borders.compound(
@@ -161,6 +160,6 @@ private class MessageBlock(info: MessageDto) : JPanel() {
         font = JBUI.Fonts.label()
         foreground = UIUtil.getLabelForeground()
         border = JBUI.Borders.empty()
-        alignmentX = Component.LEFT_ALIGNMENT
+        alignmentX = LEFT_ALIGNMENT
     }
 }

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/chat/ui/PromptPanel.kt

@@ -1,4 +1,4 @@
-package ai.kilocode.client.chat
+package ai.kilocode.client.chat.ui
 
 import com.intellij.openapi.fileTypes.PlainTextFileType
 import com.intellij.openapi.project.Project
@@ -14,6 +14,7 @@ import javax.swing.BoxLayout
 import javax.swing.Icon
 import javax.swing.JButton
 import javax.swing.JPanel
+import javax.swing.ScrollPaneConstants
 
 /**
  * Prompt input panel with an IntelliJ editor text field and a bottom
@@ -52,7 +53,7 @@ class PromptPanel(
             ed.settings.isUseSoftWraps = true
             ed.settings.isAdditionalPageAtBottom = false
             ed.scrollPane.horizontalScrollBarPolicy =
-                javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER
+                ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER
             ed.contentComponent.addKeyListener(object : KeyAdapter() {
                 override fun keyPressed(e: KeyEvent) {
                     if (e.keyCode == KeyEvent.VK_ENTER && !e.isShiftDown) {

packages/kilo-jetbrains/frontend/src/main/kotlin/ai/kilocode/client/chat/ui/StatusPanel.kt

@@ -1,4 +1,4 @@
-package ai.kilocode.client.chat
+package ai.kilocode.client.chat.ui
 
 import ai.kilocode.client.chat.model.SessionEvent
 import ai.kilocode.client.chat.model.SessionModel
@@ -17,6 +17,7 @@ import com.intellij.ui.AnimatedIcon
 import com.intellij.ui.components.JBLabel
 import com.intellij.util.ui.JBUI
 import com.intellij.util.ui.UIUtil
+import java.awt.Font
 import java.awt.GridBagConstraints
 import java.awt.GridBagLayout
 import javax.swing.Box
@@ -270,7 +271,7 @@ class StatusPanel(
 
     private fun header(text: String): JBLabel = JBLabel(text).apply {
         alignmentX = LEFT_ALIGNMENT
-        font = JBUI.Fonts.label().deriveFont(JBUI.Fonts.label().style or java.awt.Font.BOLD)
+        font = JBUI.Fonts.label().deriveFont(JBUI.Fonts.label().style or Font.BOLD)
         foreground = UIUtil.getLabelForeground()
         border = JBUI.Borders.empty(0, 0, 4, 0)
     }