feat(gui): improve input UI with minimum height and font

- Set minimum height of 64px for input field
- Add JBFont import for consistent typography
- Remove redundant token usage methods from input section

Author: phodal

core/src/main/kotlin/cc/unitmesh/devti/gui/chat/ui/AutoDevInputSection.kt

@@ -17,6 +17,7 @@ import com.intellij.openapi.wm.impl.InternalDecorator
 import com.intellij.util.messages.MessageBusConnection
 import com.intellij.ui.HintHint
 import com.intellij.util.EventDispatcher
+import com.intellij.util.ui.JBFont
 import com.intellij.util.ui.JBUI
 import com.intellij.util.ui.UIUtil
 import com.intellij.util.ui.components.BorderLayoutPanel
@@ -195,18 +196,11 @@ class AutoDevInputSection(
     fun addListener(listener: AutoDevInputListener) {
         editorListeners.addListener(listener)
     }
-    
-    // Token usage management methods
-    fun getTokenUsage() = tokenUsagePanel.getCurrentUsage()
-    
-    fun getCurrentModel() = tokenUsagePanel.getCurrentModel()
-    
-    fun resetTokenUsage() = tokenUsagePanel.reset()
 
     private val maxHeight: Int
         get() {
             val decorator = UIUtil.getParentOfType(InternalDecorator::class.java, this)
             val contentManager = decorator?.contentManager ?: return JBUI.scale(200)
             return contentManager.component.height / 2
         }
-}
+}

core/src/main/kotlin/cc/unitmesh/devti/gui/chat/ui/InputControlsManager.kt

@@ -79,6 +79,7 @@ class InputControlsManager(
     private fun createInput(inputSection: AutoDevInputSection) {
         input = AutoDevInput(project, listOf(), disposable, inputSection)
         input.border = JBEmptyBorder(10)
+        input.minimumSize = Dimension(input.minimumSize.width, 64)
     }
 
     private fun createButtons(inputSection: AutoDevInputSection) {