Fix Typewriter plugin startup crash (NRE on named controls)

MainWindow accessed InfoLabel/EndDelayInput/OkButton as if they were
auto-assigned fields, but Avalonia 11 does not generate those out of
the box without Avalonia.NameGenerator. Resolve them explicitly via
FindControl in InitializeComponent, killing the
NullReferenceException that aborted the plugin with exit code 134
right after Avalonia framework init.

While here, drop PublishSingleFile/IncludeNativeLibrariesForSelfExtract
from the workflow - Avalonia's recommended setup is multi-file
self-contained publish, and the single-file extraction was a known
source of subtle native-load issues.

Bump plugin version to 1.0.1 and point se5-plugins.json at the new
se5-typewriter-v1.0.1 release tag so SE shows "Update available" for
anyone who installed the broken 1.0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: niksedk

.github/workflows/typewriter.yml

@@ -59,8 +59,8 @@ jobs:
             -c Release \
             -r ${{ matrix.rid }} \
             --self-contained true \
-            -p:PublishSingleFile=true \
-            -p:IncludeNativeLibrariesForSelfExtract=true \
+            -p:DebugType=None \
+            -p:DebugSymbols=false \
             -o staging/TypewriterEffect
 
       - name: Rewrite plugin.json for ${{ matrix.os }}

se5-plugins.json

@@ -3,18 +3,18 @@
     {
       "name": "Typewriter effect",
       "description": "Splits each subtitle line into short timed parts that progressively reveal the text, character by character.",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "author": "Subtitle Edit",
       "url": "https://github.com/SubtitleEdit/plugins/tree/main/se5/TypewriterEffect",
       "date": "2026-05-17",
       "minSeVersion": "5.0.0",
       "downloads": {
-        "win-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0/TypewriterEffect-win-x64.zip",
-        "win-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0/TypewriterEffect-win-arm64.zip",
-        "linux-x64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0/TypewriterEffect-linux-x64.zip",
-        "linux-arm64": "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0/TypewriterEffect-linux-arm64.zip",
-        "osx-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0/TypewriterEffect-osx-x64.zip",
-        "osx-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0/TypewriterEffect-osx-arm64.zip"
+        "win-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0.1/TypewriterEffect-win-x64.zip",
+        "win-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0.1/TypewriterEffect-win-arm64.zip",
+        "linux-x64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0.1/TypewriterEffect-linux-x64.zip",
+        "linux-arm64": "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0.1/TypewriterEffect-linux-arm64.zip",
+        "osx-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0.1/TypewriterEffect-osx-x64.zip",
+        "osx-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-typewriter-v1.0.1/TypewriterEffect-osx-arm64.zip"
       }
     },
     {

se5/TypewriterEffect/MainWindow.axaml.cs

@@ -2,31 +2,39 @@
 using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
 using System;
+using System.Globalization;
 using System.Text.Json;
 
 namespace SubtitleEdit.Plugins.TypewriterEffect;
 
 public partial class MainWindow : Window
 {
     private readonly PluginRequest _request;
+    private TextBlock _infoLabel = null!;
+    private NumericUpDown _endDelayInput = null!;
 
     // Parameterless constructor only exists for the XAML designer.
     public MainWindow() : this(new PluginRequest()) { }
 
     public MainWindow(PluginRequest request)
     {
-        InitializeComponent();
         _request = request;
+        InitializeComponent();
 
         var selectedCount = request.SelectedIndices.Count;
-        InfoLabel.Text = selectedCount > 0
+        _infoLabel.Text = selectedCount > 0
             ? $"Each of the {selectedCount} selected line(s) will be split into several short lines that progressively reveal the text."
             : "Every line will be split into several short lines that progressively reveal the text.";
 
-        EndDelayInput.Value = (decimal)LoadEndDelaySetting(request.Settings, defaultValue: 0.5);
+        _endDelayInput.Value = (decimal)LoadEndDelaySetting(request.Settings, defaultValue: 0.5);
     }
 
-    private void InitializeComponent() => AvaloniaXamlLoader.Load(this);
+    private void InitializeComponent()
+    {
+        AvaloniaXamlLoader.Load(this);
+        _infoLabel = this.FindControl<TextBlock>("InfoLabel")!;
+        _endDelayInput = this.FindControl<NumericUpDown>("EndDelayInput")!;
+    }
 
     private void OnCancel(object? sender, RoutedEventArgs e)
     {
@@ -36,7 +44,7 @@ private void OnCancel(object? sender, RoutedEventArgs e)
 
     private void OnOk(object? sender, RoutedEventArgs e)
     {
-        var endDelaySec = (double)(EndDelayInput.Value ?? 0m);
+        var endDelaySec = (double)(_endDelayInput.Value ?? 0m);
 
         try
         {
@@ -84,7 +92,8 @@ private static double LoadEndDelaySetting(JsonElement? settings, double defaultV
 
     private static JsonElement BuildSettings(double endDelay)
     {
-        using var doc = JsonDocument.Parse($"{{\"endDelay\":{endDelay.ToString("0.###", System.Globalization.CultureInfo.InvariantCulture)}}}");
+        var json = $"{{\"endDelay\":{endDelay.ToString("0.###", CultureInfo.InvariantCulture)}}}";
+        using var doc = JsonDocument.Parse(json);
         return doc.RootElement.Clone();
     }
 }

se5/TypewriterEffect/plugin.json

@@ -2,7 +2,7 @@
   "apiVersion": 1,
   "name": "Typewriter effect",
   "description": "Splits each subtitle line into short timed parts that progressively reveal the text, character by character.",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "author": "Subtitle Edit",
   "url": "https://github.com/SubtitleEdit/plugins/tree/main/se5/TypewriterEffect",
   "menu": "Tools",