refactor: simplify plugin architecutre

SharpFM.sln

@@ -21,6 +21,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharpFM.Plugin.XmlViewer",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharpFM.Model", "src\SharpFM.Model\SharpFM.Model.csproj", "{E0FF2DD8-E4B8-4495-92FA-F17AF9B78086}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharpFM.Plugin.UI", "src\SharpFM.Plugin.UI\SharpFM.Plugin.UI.csproj", "{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -115,6 +117,18 @@ Global
 		{E0FF2DD8-E4B8-4495-92FA-F17AF9B78086}.Release|x64.Build.0 = Release|Any CPU
 		{E0FF2DD8-E4B8-4495-92FA-F17AF9B78086}.Release|x86.ActiveCfg = Release|Any CPU
 		{E0FF2DD8-E4B8-4495-92FA-F17AF9B78086}.Release|x86.Build.0 = Release|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Debug|x64.Build.0 = Debug|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Debug|x86.Build.0 = Debug|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Release|x64.ActiveCfg = Release|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Release|x64.Build.0 = Release|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Release|x86.ActiveCfg = Release|Any CPU
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -126,5 +140,6 @@ Global
 		{74337D8E-5EC6-4E5F-9E9E-F2B59E8ECABB} = {E2FF2BB3-AF37-44BA-BD84-999B352D814E}
 		{E988ECF3-E096-4F29-88C0-27B50FD6C703} = {1515B0F2-1419-4778-92A8-430A8B4931F7}
 		{E0FF2DD8-E4B8-4495-92FA-F17AF9B78086} = {1515B0F2-1419-4778-92A8-430A8B4931F7}
+		{8DDBA57D-48E1-400C-A9F6-F02DEFD35EFE} = {1515B0F2-1419-4778-92A8-430A8B4931F7}
 	EndGlobalSection
 EndGlobal

src/SharpFM.Plugin.Sample/ClipInspectorPlugin.cs

@@ -4,13 +4,15 @@
 using Avalonia.Controls;
 using SharpFM.Model;
 using SharpFM.Plugin;
+using SharpFM.Plugin.UI;
 
 namespace SharpFM.Plugin.Sample;
 
 public class ClipInspectorPlugin : IPanelPlugin
 {
     public string Id => "clip-inspector";
     public string DisplayName => "Clip Inspector";
+    public string Description => "Displays clip metadata including name, type, element count, and size.";
     public string Version => GetType().Assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? "0.0.0";
     public IReadOnlyList<PluginKeyBinding> KeyBindings => [];
     public IReadOnlyList<PluginMenuAction> MenuActions => [];

src/SharpFM.Plugin.Sample/SharpFM.Plugin.Sample.csproj

@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\SharpFM.Plugin\SharpFM.Plugin.csproj" />
+    <ProjectReference Include="..\SharpFM.Plugin.UI\SharpFM.Plugin.UI.csproj" />
   </ItemGroup>
 
   <ItemGroup>

src/SharpFM.Plugin/IPanelPlugin.cs → src/SharpFM.Plugin.UI/IPanelPlugin.cs

@@ -1,6 +1,6 @@
 using Avalonia.Controls;
 
-namespace SharpFM.Plugin;
+namespace SharpFM.Plugin.UI;
 
 /// <summary>
 /// A plugin that provides a dockable side panel in the SharpFM UI.

src/SharpFM.Plugin.UI/IPluginUIHost.cs

@@ -0,0 +1,18 @@
+using System.Threading.Tasks;
+using Avalonia.Controls;
+
+namespace SharpFM.Plugin.UI;
+
+/// <summary>
+/// Extended host interface for plugins that need UI capabilities beyond
+/// the simple dialogs on <see cref="IPluginHost"/>. Provides content
+/// dialog hosting backed by Avalonia.
+/// </summary>
+public interface IPluginUIHost : IPluginHost
+{
+    /// <summary>
+    /// Show a modal dialog containing plugin-provided content.
+    /// Returns true if the user accepted (OK), false if cancelled.
+    /// </summary>
+    Task<bool> ShowContentDialogAsync(string title, Control content);
+}

src/SharpFM.Plugin.UI/SharpFM.Plugin.UI.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <LangVersion>latest</LangVersion>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <MinVerMinimumMajorMinor>2.0</MinVerMinimumMajorMinor>
+    <MinVerTagPrefix>v</MinVerTagPrefix>
+    <MinVerDefaultPreReleaseIdentifiers>beta.0</MinVerDefaultPreReleaseIdentifiers>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SharpFM.Plugin\SharpFM.Plugin.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia" Version="11.2.4" />
+    <PackageReference Include="MinVer" Version="6.0.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+</Project>

src/SharpFM.Plugin.XmlViewer/SharpFM.Plugin.XmlViewer.csproj

@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\SharpFM.Plugin\SharpFM.Plugin.csproj" />
+    <ProjectReference Include="..\SharpFM.Plugin.UI\SharpFM.Plugin.UI.csproj" />
   </ItemGroup>
 
   <ItemGroup>

src/SharpFM.Plugin.XmlViewer/XmlViewerPlugin.cs

@@ -4,13 +4,15 @@
 using Avalonia.Controls;
 using SharpFM.Model;
 using SharpFM.Plugin;
+using SharpFM.Plugin.UI;
 
 namespace SharpFM.Plugin.XmlViewer;
 
 public class XmlViewerPlugin : IPanelPlugin
 {
     public string Id => "xml-viewer";
     public string DisplayName => "XML Viewer";
+    public string Description => "Live XML panel with syntax highlighting and bidirectional sync.";
     public string Version => GetType().Assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? "0.0.0";
 
     private IPluginHost? _host;

src/SharpFM.Plugin/ClipContentChangedArgs.cs

@@ -6,6 +6,6 @@ namespace SharpFM.Plugin;
 /// Event arguments for <see cref="IPluginHost.ClipContentChanged"/>.
 /// </summary>
 /// <param name="Clip">Fresh snapshot of the clip with synced XML.</param>
-/// <param name="Origin">"editor" for user edits, or the originating plugin's <see cref="IPanelPlugin.Id"/>.</param>
+/// <param name="Origin">"editor" for user edits, or the originating plugin's <see cref="IPlugin.Id"/>.</param>
 /// <param name="IsPartial">True if the XML was produced from an incomplete parse (e.g. mid-typing).</param>
 public record ClipContentChangedArgs(ClipData Clip, string Origin, bool IsPartial);

src/SharpFM.Plugin/IClipTransformPlugin.cs → src/SharpFM.Plugin/IClipTransform.cs

@@ -3,11 +3,10 @@
 namespace SharpFM.Plugin;
 
 /// <summary>
-/// A plugin that transforms clip XML during import or export operations.
-/// Transforms run in plugin load order. Use <see cref="IsEnabled"/> to allow
-/// users to toggle transforms without uninstalling.
+/// A clip transform that runs during import/export operations.
+/// Register instances with <see cref="IPluginHost.RegisterTransform"/>.
 /// </summary>
-public interface IClipTransformPlugin : IPlugin
+public interface IClipTransform
 {
     /// <summary>
     /// Transform clip XML when a clip is imported (pasted from FileMaker or loaded from storage).
@@ -22,8 +21,7 @@ public interface IClipTransformPlugin : IPlugin
     Task<string> OnExportAsync(string clipType, string xml);
 
     /// <summary>
-    /// Whether this transformer is currently enabled.
-    /// The user can toggle transformers on/off without uninstalling them.
+    /// Whether this transform is currently enabled.
     /// </summary>
     bool IsEnabled { get; set; }
 }

src/SharpFM.Plugin/IPlugin.cs

@@ -18,6 +18,11 @@ public interface IPlugin : IDisposable
     /// </summary>
     string DisplayName { get; }
 
+    /// <summary>
+    /// Short description of what this plugin does, shown in the Plugin Manager UI.
+    /// </summary>
+    string Description { get; }
+
     /// <summary>
     /// Plugin version string (e.g. "2.0.0-beta.0"). Shown in the Plugin Manager UI.
     /// </summary>

src/SharpFM.Plugin/IPluginHost.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Logging;
 using SharpFM.Model;
 using SharpFM.Model.Schema;
@@ -77,4 +78,28 @@ public interface IPluginHost
     /// Remove a clip from the loaded collection by name.
     /// </summary>
     bool RemoveClip(string clipName);
+
+    /// <summary>
+    /// Register a clip repository provided by this plugin.
+    /// The host adds it to the list of available storage backends.
+    /// </summary>
+    void RegisterRepository(IClipRepository repository);
+
+    /// <summary>
+    /// Register a clip transform provided by this plugin.
+    /// Transforms run during import/export in registration order.
+    /// </summary>
+    void RegisterTransform(IClipTransform transform);
+
+    /// <summary>
+    /// Show a simple modal dialog with a message and buttons.
+    /// Returns the label of the clicked button, or null if cancelled.
+    /// </summary>
+    Task<string?> ShowDialogAsync(string title, string message, string[] buttons);
+
+    /// <summary>
+    /// Show a modal input dialog prompting the user for text.
+    /// Returns the entered text, or null if cancelled.
+    /// </summary>
+    Task<string?> ShowInputDialogAsync(string title, string prompt, string? defaultValue = null);
 }

src/SharpFM.Plugin/SharpFM.Plugin.csproj

@@ -16,7 +16,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="11.2.4" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.*" />
     <PackageReference Include="MinVer" Version="6.0.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

src/SharpFM/App.axaml.cs

@@ -48,22 +48,21 @@ public override void OnFrameworkInitializationCompleted()
 
             // Load plugins
             var pluginHost = new PluginHost(viewModel, loggerFactory);
+            var pluginUIHost = new PluginUIHost(pluginHost);
             var pluginService = new PluginService(logger);
-            pluginService.LoadPlugins(pluginHost);
+            pluginService.LoadPlugins(pluginUIHost);
 
-            // Wire up all plugin types
-            viewModel.PanelPlugins = pluginService.PanelPlugins;
-            viewModel.TransformPlugins = pluginService.TransformPlugins;
+            viewModel.AllPlugins = pluginService.AllPlugins;
+            viewModel.PluginUI = pluginUIHost;
 
-            // Build repository list: built-in + plugin-provided
+            // Build repository list: built-in + plugin-registered
             var repos = new List<IClipRepository> { viewModel.ActiveRepository };
-            foreach (var pp in pluginService.PersistencePlugins)
-                repos.Add(pp.CreateRepository());
+            repos.AddRange(pluginHost.Repositories);
             viewModel.AvailableRepositories = repos;
 
             // Give the window access to plugin services for the manager dialog
             if (desktop.MainWindow is MainWindow mainWindow)
-                mainWindow.SetPluginServices(pluginService, pluginHost);
+                mainWindow.SetPluginServices(pluginService, pluginUIHost);
 
             desktop.MainWindow.DataContext = viewModel;