Add Plugin-Shared library + AmericanToBritish & BritishToAmerican plugins

.github/workflows/american-to-british.yml

@@ -0,0 +1,109 @@
+name: Build AmericanToBritish (SE5)
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'se5/AmericanToBritish/**'
+      - 'se5/Plugin-Shared/**'
+      - '.github/workflows/american-to-british.yml'
+  pull_request:
+    paths:
+      - 'se5/AmericanToBritish/**'
+      - 'se5/Plugin-Shared/**'
+      - '.github/workflows/american-to-british.yml'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag to publish the zips under (e.g. se5-american-to-british-v1.0). Leave empty to build artifacts only.'
+        required: false
+        type: string
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - rid: win-x64
+            os: windows
+            exe: AmericanToBritish.exe
+          - rid: win-arm64
+            os: windows
+            exe: AmericanToBritish.exe
+          - rid: linux-x64
+            os: linux
+            exe: AmericanToBritish
+          - rid: linux-arm64
+            os: linux
+            exe: AmericanToBritish
+          - rid: osx-x64
+            os: macos
+            exe: AmericanToBritish
+          - rid: osx-arm64
+            os: macos
+            exe: AmericanToBritish
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET 8
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Publish self-contained (${{ matrix.rid }})
+        working-directory: se5/AmericanToBritish
+        run: |
+          dotnet publish AmericanToBritish.csproj \
+            -c Release \
+            -r ${{ matrix.rid }} \
+            --self-contained true \
+            -p:DebugType=None \
+            -p:DebugSymbols=false \
+            -o staging/AmericanToBritish
+
+      - name: Rewrite plugin.json for ${{ matrix.os }}
+        working-directory: se5/AmericanToBritish
+        run: |
+          jq '
+            del(.runtime, .entry) |
+            .executables = { "${{ matrix.os }}": "${{ matrix.exe }}" }
+          ' plugin.json > staging/AmericanToBritish/plugin.json
+
+      - name: Package zip
+        working-directory: se5/AmericanToBritish/staging
+        run: zip -r "$GITHUB_WORKSPACE/AmericanToBritish-${{ matrix.rid }}.zip" AmericanToBritish
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: AmericanToBritish-${{ matrix.rid }}
+          path: AmericanToBritish-${{ matrix.rid }}.zip
+
+  release:
+    name: Publish GitHub Release
+    needs: build
+    if: github.event_name == 'workflow_dispatch' && github.event.inputs.tag != ''
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Download all zips
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+          pattern: AmericanToBritish-*
+          merge-multiple: true
+
+      - name: Create release and upload zips
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          gh release create "${{ github.event.inputs.tag }}" dist/AmericanToBritish-*.zip \
+            --repo "${{ github.repository }}" \
+            --target "${{ github.sha }}" \
+            --title "AmericanToBritish ${{ github.event.inputs.tag }}" \
+            --notes "Self-contained AmericanToBritish plugin builds for win/linux/osx (x64 + arm64)."

.github/workflows/british-to-american.yml

@@ -0,0 +1,109 @@
+name: Build BritishToAmerican (SE5)
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'se5/BritishToAmerican/**'
+      - 'se5/Plugin-Shared/**'
+      - '.github/workflows/british-to-american.yml'
+  pull_request:
+    paths:
+      - 'se5/BritishToAmerican/**'
+      - 'se5/Plugin-Shared/**'
+      - '.github/workflows/british-to-american.yml'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag to publish the zips under (e.g. se5-british-to-american-v1.0). Leave empty to build artifacts only.'
+        required: false
+        type: string
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - rid: win-x64
+            os: windows
+            exe: BritishToAmerican.exe
+          - rid: win-arm64
+            os: windows
+            exe: BritishToAmerican.exe
+          - rid: linux-x64
+            os: linux
+            exe: BritishToAmerican
+          - rid: linux-arm64
+            os: linux
+            exe: BritishToAmerican
+          - rid: osx-x64
+            os: macos
+            exe: BritishToAmerican
+          - rid: osx-arm64
+            os: macos
+            exe: BritishToAmerican
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET 8
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Publish self-contained (${{ matrix.rid }})
+        working-directory: se5/BritishToAmerican
+        run: |
+          dotnet publish BritishToAmerican.csproj \
+            -c Release \
+            -r ${{ matrix.rid }} \
+            --self-contained true \
+            -p:DebugType=None \
+            -p:DebugSymbols=false \
+            -o staging/BritishToAmerican
+
+      - name: Rewrite plugin.json for ${{ matrix.os }}
+        working-directory: se5/BritishToAmerican
+        run: |
+          jq '
+            del(.runtime, .entry) |
+            .executables = { "${{ matrix.os }}": "${{ matrix.exe }}" }
+          ' plugin.json > staging/BritishToAmerican/plugin.json
+
+      - name: Package zip
+        working-directory: se5/BritishToAmerican/staging
+        run: zip -r "$GITHUB_WORKSPACE/BritishToAmerican-${{ matrix.rid }}.zip" BritishToAmerican
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: BritishToAmerican-${{ matrix.rid }}
+          path: BritishToAmerican-${{ matrix.rid }}.zip
+
+  release:
+    name: Publish GitHub Release
+    needs: build
+    if: github.event_name == 'workflow_dispatch' && github.event.inputs.tag != ''
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Download all zips
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+          pattern: BritishToAmerican-*
+          merge-multiple: true
+
+      - name: Create release and upload zips
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          gh release create "${{ github.event.inputs.tag }}" dist/BritishToAmerican-*.zip \
+            --repo "${{ github.repository }}" \
+            --target "${{ github.sha }}" \
+            --title "BritishToAmerican ${{ github.event.inputs.tag }}" \
+            --notes "Self-contained BritishToAmerican plugin builds for win/linux/osx (x64 + arm64)."

se5-plugins.json

@@ -1,5 +1,39 @@
 {
   "plugins": [
+    {
+      "name": "British to American",
+      "description": "Converts British English spellings to American English in the subtitle. Shows a checkable preview of every proposed change.",
+      "version": "1.0.0",
+      "author": "Subtitle Edit",
+      "url": "https://github.com/SubtitleEdit/plugins/tree/main/se5/BritishToAmerican",
+      "date": "2026-05-17",
+      "minSeVersion": "5.0.0",
+      "downloads": {
+        "win-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-british-to-american-v1.0/BritishToAmerican-win-x64.zip",
+        "win-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-british-to-american-v1.0/BritishToAmerican-win-arm64.zip",
+        "linux-x64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-british-to-american-v1.0/BritishToAmerican-linux-x64.zip",
+        "linux-arm64": "https://github.com/SubtitleEdit/plugins/releases/download/se5-british-to-american-v1.0/BritishToAmerican-linux-arm64.zip",
+        "osx-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-british-to-american-v1.0/BritishToAmerican-osx-x64.zip",
+        "osx-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-british-to-american-v1.0/BritishToAmerican-osx-arm64.zip"
+      }
+    },
+    {
+      "name": "American to British",
+      "description": "Converts American English spellings to British English in the subtitle. Shows a checkable preview of every proposed change.",
+      "version": "1.0.0",
+      "author": "Subtitle Edit",
+      "url": "https://github.com/SubtitleEdit/plugins/tree/main/se5/AmericanToBritish",
+      "date": "2026-05-17",
+      "minSeVersion": "5.0.0",
+      "downloads": {
+        "win-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-american-to-british-v1.0/AmericanToBritish-win-x64.zip",
+        "win-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-american-to-british-v1.0/AmericanToBritish-win-arm64.zip",
+        "linux-x64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-american-to-british-v1.0/AmericanToBritish-linux-x64.zip",
+        "linux-arm64": "https://github.com/SubtitleEdit/plugins/releases/download/se5-american-to-british-v1.0/AmericanToBritish-linux-arm64.zip",
+        "osx-x64":     "https://github.com/SubtitleEdit/plugins/releases/download/se5-american-to-british-v1.0/AmericanToBritish-osx-x64.zip",
+        "osx-arm64":   "https://github.com/SubtitleEdit/plugins/releases/download/se5-american-to-british-v1.0/AmericanToBritish-osx-arm64.zip"
+      }
+    },
     {
       "name": "Typewriter effect",
       "description": "Splits each subtitle line into short timed parts that progressively reveal the text, character by character.",

se5/AmericanToBritish/AmericanToBritish.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <AssemblyName>AmericanToBritish</AssemblyName>
+    <RootNamespace>SubtitleEdit.Plugins.AmericanToBritish</RootNamespace>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Plugin-Shared\Plugin-Shared.csproj" />
+  </ItemGroup>
+
+</Project>

se5/AmericanToBritish/App.axaml

@@ -0,0 +1,8 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="SubtitleEdit.Plugins.AmericanToBritish.App"
+             RequestedThemeVariant="Default">
+    <Application.Styles>
+        <FluentTheme />
+    </Application.Styles>
+</Application>

se5/AmericanToBritish/App.axaml.cs

@@ -0,0 +1,13 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using SubtitleEdit.Plugins.Shared;
+
+namespace SubtitleEdit.Plugins.AmericanToBritish;
+
+public partial class App : PluginApp
+{
+    public override void Initialize() => AvaloniaXamlLoader.Load(this);
+
+    protected override Window CreateMainWindow(PluginRequest request) => new MainWindow(request);
+}

se5/AmericanToBritish/ChangeProposal.cs

@@ -0,0 +1,20 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace SubtitleEdit.Plugins.AmericanToBritish;
+
+public partial class ChangeProposal : ObservableObject
+{
+    [ObservableProperty] private bool _include = true;
+
+    public int LineIndex { get; }
+    public string LineNumber => (LineIndex + 1).ToString();
+    public string OriginalText { get; }
+    public string ConvertedText { get; }
+
+    public ChangeProposal(int lineIndex, string originalText, string convertedText)
+    {
+        LineIndex = lineIndex;
+        OriginalText = originalText;
+        ConvertedText = convertedText;
+    }
+}