Add hamburger menu that opens the About screen

app/src/main/AndroidManifest.xml

@@ -44,6 +44,10 @@
             android:name=".PhotoViewActivity"
             android:exported="false"
             android:label="@string/title_photo_view" />
-    </application>
+            <activity
+            android:name=".AboutActivity"
+            android:exported="false"
+            android:theme="@style/Theme.AndPictures" />
+</application>
 
 </manifest>

app/src/main/java/com/bm/andpictures/AboutActivity.kt

@@ -0,0 +1,34 @@
+package com.bm.andpictures
+
+import android.os.Bundle
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+
+/** Shows the app icon, name and version. Reached from the main screen's hamburger. */
+class AboutActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_about)
+
+        // The activity theme is DarkActionBar, so the built-in action bar is
+        // already there — no second toolbar needed, just the up arrow.
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+
+        findViewById<TextView>(R.id.versionText).text =
+            "Version " + BuildInfo.versionName(this)
+
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val bars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(bars.left, bars.top, bars.right, bars.bottom)
+            insets
+        }
+    }
+
+    override fun onSupportNavigateUp(): Boolean {
+        finish()
+        return true
+    }
+}

app/src/main/java/com/bm/andpictures/BuildInfo.kt

@@ -0,0 +1,13 @@
+package com.bm.andpictures
+
+import android.content.Context
+
+/** Version string for the About screen, kept in one place. */
+object BuildInfo {
+    fun versionName(context: Context): String = try {
+        @Suppress("DEPRECATION")
+        context.packageManager.getPackageInfo(context.packageName, 0).versionName ?: "unknown"
+    } catch (e: Exception) {
+        "unknown"
+    }
+}

app/src/main/java/com/bm/andpictures/MainActivity.kt

@@ -52,6 +52,12 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
         bindViews()
+
+        // Hamburger menu → About. The framework action bar is already present
+        // (theme is DarkActionBar), so just dress it with the menu icon.
+        supportActionBar?.setHomeAsUpIndicator(R.drawable.ic_hamburger)
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+
         populate()
         requestNotificationPermissionIfNeeded()
 
@@ -70,6 +76,12 @@ class MainActivity : AppCompatActivity() {
         refreshStatus()
     }
 
+    /** The hamburger is the action bar's "home" affordance: it opens About. */
+    override fun onSupportNavigateUp(): Boolean {
+        startActivity(Intent(this, AboutActivity::class.java))
+        return true
+    }
+
     private fun bindViews() {
         statusText = findViewById(R.id.statusText)
         lastSyncText = findViewById(R.id.lastSyncText)

app/src/main/res/drawable/ic_hamburger.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Three bars, the conventional "menu" affordance. White so it reads on the
+     brand-blue toolbar; drawn on a 24dp grid to match the other action icons. -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="@android:color/white">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M3,6h18v2h-18z" />
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M3,11h18v2h-18z" />
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M3,16h18v2h-18z" />
+</vector>

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

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- No toolbar here: the activity theme (DarkActionBar) supplies the action bar,
+     so the layout is just the content. -->
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:gravity="center_horizontal"
+        android:padding="32dp">
+
+        <ImageView
+            android:layout_width="120dp"
+            android:layout_height="120dp"
+            android:layout_marginTop="24dp"
+            android:src="@mipmap/ic_launcher"
+            android:contentDescription="@string/app_name" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/app_name"
+            android:textSize="24sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/versionText"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="Version"
+            android:textSize="14sp" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="32dp"
+            android:gravity="center"
+            android:text="@string/about_blurb"
+            android:textSize="14sp" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="32dp"
+            android:text="@string/about_copyright"
+            android:textSize="14sp" />
+    </LinearLayout>
+</ScrollView>

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

@@ -11,4 +11,7 @@
     <string name="title_file_browser">Files</string>
     <string name="title_photo_view">Photo</string>
     <string name="photo_view_failed">Could not load this photo.</string>
+    <string name="about_title">About</string>
+    <string name="about_copyright">© 2026 UmbraTools</string>
+    <string name="about_blurb">Copies new photos from the phone to the NAS over SMB whenever you are on the home network, filed by decade / year / month.</string>
 </resources>