feat: 进港查询筛选弹窗改为内容区嵌入式面板

将筛选条件弹框从 XPopup DrawerPopupView 改为嵌入 Activity 内容区的滑动面板，
使筛选面板从右侧滑入时不遮挡顶部蓝色标题栏，暗色遮罩也只覆盖内容区域。
同时修复首次弹出时因布局测量时序导致的闪烁问题。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

module_gjj/src/main/java/com/lukouguoji/gjj/activity/IntImpQueryActivity.kt

@@ -3,6 +3,9 @@ package com.lukouguoji.gjj.activity
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import android.view.Gravity
+import android.view.View
+import android.widget.FrameLayout
 import com.alibaba.android.arouter.facade.annotation.Route
 import com.lukouguoji.gjj.R
 import com.lukouguoji.gjj.databinding.ActivityIntImpQueryBinding
@@ -43,10 +46,66 @@ class IntImpQueryActivity :
 
         viewModel.initAgentList()
         viewModel.initSpecialCodeList()
+        viewModel.initFilterLists()
+
+        // 观察筛选面板显示状态
+        viewModel.filterVisible.observe(this) { visible ->
+            if (visible) showFilterPanel() else hideFilterPanel()
+        }
 
         viewModel.refresh()
     }
 
+    private fun showFilterPanel() {
+        val panel = binding.filterPanel.root
+        val overlay = binding.filterOverlay
+        val panelWidth = window.decorView.width / 3
+
+        panel.layoutParams = (panel.layoutParams as FrameLayout.LayoutParams).apply {
+            width = panelWidth
+            gravity = Gravity.END
+        }
+
+        // 先 INVISIBLE 完成测量，避免第一次显示时闪烁
+        panel.visibility = View.INVISIBLE
+        panel.translationX = panelWidth.toFloat()
+        overlay.visibility = View.VISIBLE
+        overlay.alpha = 0f
+
+        panel.post {
+            panel.visibility = View.VISIBLE
+            panel.animate().translationX(0f).setDuration(250).start()
+            overlay.animate().alpha(1f).setDuration(250).start()
+        }
+    }
+
+    private fun hideFilterPanel() {
+        val panel = binding.filterPanel.root
+        val overlay = binding.filterOverlay
+
+        if (panel.visibility != View.VISIBLE) return
+
+        panel.animate()
+            .translationX(panel.width.toFloat())
+            .setDuration(250)
+            .withEndAction { panel.visibility = View.GONE }
+            .start()
+
+        overlay.animate()
+            .alpha(0f)
+            .setDuration(250)
+            .withEndAction { overlay.visibility = View.GONE }
+            .start()
+    }
+
+    override fun onBackPressed() {
+        if (viewModel.filterVisible.value == true) {
+            viewModel.closeFilter()
+        } else {
+            super.onBackPressed()
+        }
+    }
+
     companion object {
         @JvmStatic
         fun start(context: Context) {