1.2.2: fix accidental pull-to-refresh; settings tabs on phones

- the web app reports the message list's scroll position through the bridge,
  so pull-to-refresh only fires when the list is really at the top; the
  trigger distance is bigger (the WebView itself never scrolls)
- settings tabs scroll horizontally on narrow screens (all tabs reachable)
- version 1.2.2

app/build.gradle.kts

@@ -22,8 +22,8 @@ android {
         applicationId = "dev.n1ko.nikogpt"
         minSdk = 29 // Android 10
         targetSdk = 35
-        versionCode = 7
-        versionName = "1.2.1"
+        versionCode = 8
+        versionName = "1.2.2"
     }
 
     signingConfigs {

app/src/main/java/dev/n1ko/nikogpt/MainActivity.kt

@@ -80,6 +80,10 @@ class MainActivity : AppCompatActivity() {
 
     // Shared text ("Share to NikoGPT") waiting for the page to load.
     private var pendingShare: String? = null
+    // Whether the chat's inner scroll container is at the top; pull-to-refresh
+    // only fires there (the WebView itself never scrolls).
+    @Volatile
+    private var webAtTop = true
     // Where the camera writes the picture before it reaches the web app.
     private var pendingCameraUri: Uri? = null
 
@@ -276,6 +280,10 @@ class MainActivity : AppCompatActivity() {
         })
 
         refresh.setOnRefreshListener { webView.reload() }
+        // Pull-to-refresh only when the chat list is really at the top; a
+        // bigger trigger distance keeps normal scrolling from reloading.
+        refresh.setOnChildScrollUpCallback { _, _ -> !webAtTop }
+        refresh.setDistanceToTriggerSync((80 * resources.displayMetrics.density).toInt())
 
         onBackPressedDispatcher.addCallback(this, object : OnBackPressedCallback(true) {
             override fun handleOnBackPressed() {
@@ -352,6 +360,13 @@ class MainActivity : AppCompatActivity() {
         fun linkGoogle(clientId: String) {
             runOnUiThread { openGooglePicker(clientId, link = true) }
         }
+
+        // The web app reports the message list's scroll position, so pulling
+        // down only refreshes when the list really is at the top.
+        @JavascriptInterface
+        fun setAtTop(atTop: Boolean) {
+            webAtTop = atTop
+        }
     }
 
     // openGooglePicker tries the native pickers in order: Credential Manager