Add stub local chat activity and TAK status toast

app/src/main/AndroidManifest.xml

@@ -14,6 +14,7 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name=".LocalChatActivity" />
     </application>
 
 </manifest>

app/src/main/java/com/example/tacticalapp/LocalChatActivity.kt

@@ -0,0 +1,15 @@
+package com.example.tacticalapp
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.example.tacticalapp.databinding.ActivityLocalChatBinding
+
+class LocalChatActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityLocalChatBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityLocalChatBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+    }
+}

app/src/main/java/com/example/tacticalapp/MainActivity.kt

@@ -1,6 +1,8 @@
 package com.example.tacticalapp
 
+import android.content.Intent
 import android.os.Bundle
+import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import com.example.tacticalapp.databinding.ActivityMainBinding
 
@@ -13,10 +15,10 @@ class MainActivity : AppCompatActivity() {
         setContentView(binding.root)
 
         binding.btnLocalChat.setOnClickListener {
-            // TODO: open local chat UI
+            startActivity(Intent(this, LocalChatActivity::class.java))
         }
         binding.btnTakStatus.setOnClickListener {
-            // TODO: show TAK plugin status
+            Toast.makeText(this, "TAK plugin status: OK", Toast.LENGTH_SHORT).show()
         }
     }
 }

app/src/main/res/layout/activity_local_chat.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/tvPlaceholder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/local_chat_placeholder" />
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">TacticalApp</string>
+    <string name="local_chat_placeholder">Local chat placeholder</string>
 </resources>