refactor(config): consolidate model aliases into ModelRegistry

Replaces three scattered model lists (ListSettingsModalViewModel,
DetailsIslandViewModel, GeneralSettingsTabViewModel) and the hardcoded
planning model with a single source. Planning launcher now uses the
opus alias instead of pinning claude-opus-4-7.

src/ClaudeDo.Data/Models/ModelRegistry.cs

@@ -0,0 +1,12 @@
+namespace ClaudeDo.Data.Models;
+
+public static class ModelRegistry
+{
+    public static readonly IReadOnlyList<string> Aliases = new[] { "sonnet", "opus", "haiku" };
+
+    public const string DefaultAlias = "sonnet";
+    public const string PlanningAlias = "opus";
+
+    public const string ListDefaultSentinel = "(default)";
+    public const string TaskInheritSentinel = "(inherit)";
+}

src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs

@@ -95,7 +95,7 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
     [ObservableProperty] private string? _model;
 
     // Agent settings overrides
-    [ObservableProperty] private string _taskModelSelection = "(inherit)";
+    [ObservableProperty] private string _taskModelSelection = ModelRegistry.TaskInheritSentinel;
     [ObservableProperty] private string _taskSystemPrompt = "";
     [ObservableProperty] private AgentInfo? _taskSelectedAgent;
 
@@ -103,10 +103,8 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
     [ObservableProperty] private string _effectiveSystemPromptHint = "";
     [ObservableProperty] private string _effectiveAgentHint = "";
 
-    public System.Collections.ObjectModel.ObservableCollection<string> TaskModelOptions { get; } = new()
+    public System.Collections.ObjectModel.ObservableCollection<string> TaskModelOptions { get; } = new(
-    {
+        new[] { ModelRegistry.TaskInheritSentinel }.Concat(ModelRegistry.Aliases));
-        "(inherit)", "sonnet", "opus", "haiku",
-    };
 
     public System.Collections.ObjectModel.ObservableCollection<AgentInfo> TaskAgentOptions { get; } = new();
 
@@ -365,7 +363,7 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
             await System.Threading.Tasks.Task.Delay(300, ct);
             if (Task is null) return;
 
-            var model = TaskModelSelection == "(inherit)" ? null : TaskModelSelection;
+            var model = TaskModelSelection == ModelRegistry.TaskInheritSentinel ? null : TaskModelSelection;
             var sp = string.IsNullOrWhiteSpace(TaskSystemPrompt) ? null : TaskSystemPrompt;
             var ap = TaskSelectedAgent is null || string.IsNullOrWhiteSpace(TaskSelectedAgent.Path)
                 ? null : TaskSelectedAgent.Path;
@@ -384,11 +382,11 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
         try
         {
             TaskAgentOptions.Clear();
-            TaskAgentOptions.Add(new AgentInfo("(inherit)", "", ""));
+            TaskAgentOptions.Add(new AgentInfo(ModelRegistry.TaskInheritSentinel, "", ""));
             var agents = await _worker.GetAgentsAsync();
             foreach (var a in agents) TaskAgentOptions.Add(a);
 
-            TaskModelSelection = string.IsNullOrWhiteSpace(entity.Model) ? "(inherit)" : entity.Model!;
+            TaskModelSelection = string.IsNullOrWhiteSpace(entity.Model) ? ModelRegistry.TaskInheritSentinel : entity.Model!;
             TaskSystemPrompt = entity.SystemPrompt ?? "";
             TaskSelectedAgent = string.IsNullOrWhiteSpace(entity.AgentPath)
                 ? TaskAgentOptions[0]
@@ -439,7 +437,7 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase
             _suppressAgentSave = true;
             try
             {
-                TaskModelSelection = "(inherit)";
+                TaskModelSelection = ModelRegistry.TaskInheritSentinel;
                 TaskSystemPrompt = "";
                 TaskSelectedAgent = null;
             }

src/ClaudeDo.Ui/ViewModels/Modals/ListSettingsModalViewModel.cs

@@ -16,14 +16,12 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
     [ObservableProperty] private string _workingDir = "";
     [ObservableProperty] private string _defaultCommitType = "chore";
 
-    [ObservableProperty] private string _selectedModel = "(default)";
+    [ObservableProperty] private string _selectedModel = ModelRegistry.ListDefaultSentinel;
     [ObservableProperty] private string _systemPrompt = "";
     [ObservableProperty] private AgentInfo? _selectedAgent;
 
-    public ObservableCollection<string> ModelOptions { get; } = new()
+    public ObservableCollection<string> ModelOptions { get; } = new(
-    {
+        new[] { ModelRegistry.ListDefaultSentinel }.Concat(ModelRegistry.Aliases));
-        "(default)", "sonnet", "opus", "haiku",
-    };
 
     public ObservableCollection<string> CommitTypeOptions { get; } = new()
     {
@@ -57,7 +55,7 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
         foreach (var a in agents) Agents.Add(a);
 
         var config = await _worker.GetListConfigAsync(listId);
-        SelectedModel = string.IsNullOrWhiteSpace(config?.Model) ? "(default)" : config!.Model!;
+        SelectedModel = string.IsNullOrWhiteSpace(config?.Model) ? ModelRegistry.ListDefaultSentinel : config!.Model!;
         SystemPrompt = config?.SystemPrompt ?? "";
         SelectedAgent = string.IsNullOrWhiteSpace(config?.AgentPath)
             ? Agents[0]
@@ -67,7 +65,7 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
     [RelayCommand]
     private async Task SaveAsync()
     {
-        var model = SelectedModel == "(default)" ? null : SelectedModel;
+        var model = SelectedModel == ModelRegistry.ListDefaultSentinel ? null : SelectedModel;
         var sp = string.IsNullOrWhiteSpace(SystemPrompt) ? null : SystemPrompt;
         var ap = SelectedAgent is null || string.IsNullOrWhiteSpace(SelectedAgent.Path) ? null : SelectedAgent.Path;
 
@@ -89,7 +87,7 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
     [RelayCommand]
     private void ResetAgentSettings()
     {
-        SelectedModel = "(default)";
+        SelectedModel = ModelRegistry.ListDefaultSentinel;
         SystemPrompt = "";
         SelectedAgent = Agents.Count > 0 ? Agents[0] : null;
     }

src/ClaudeDo.Ui/ViewModels/Modals/Settings/GeneralSettingsTabViewModel.cs

@@ -1,3 +1,4 @@
+using ClaudeDo.Data.Models;
 using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace ClaudeDo.Ui.ViewModels.Modals.Settings;
@@ -5,11 +6,11 @@ namespace ClaudeDo.Ui.ViewModels.Modals.Settings;
 public sealed partial class GeneralSettingsTabViewModel : ViewModelBase
 {
     [ObservableProperty] private string _defaultClaudeInstructions = "";
-    [ObservableProperty] private string _defaultModel = "sonnet";
+    [ObservableProperty] private string _defaultModel = ModelRegistry.DefaultAlias;
     [ObservableProperty] private int _defaultMaxTurns = 100;
     [ObservableProperty] private string _defaultPermissionMode = "auto";
 
-    public IReadOnlyList<string> Models { get; } = new[] { "opus", "sonnet", "haiku" };
+    public IReadOnlyList<string> Models { get; } = ModelRegistry.Aliases;
     public IReadOnlyList<string> PermissionModes { get; } = new[]
         { "auto", "bypassPermissions", "acceptEdits", "plan", "default" };
 

src/ClaudeDo.Worker/Hub/WorkerHub.cs

@@ -210,7 +210,7 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
         {
             Id = AppSettingsEntity.SingletonId,
             DefaultClaudeInstructions = dto.DefaultClaudeInstructions ?? "",
-            DefaultModel = dto.DefaultModel ?? "sonnet",
+            DefaultModel = dto.DefaultModel ?? ModelRegistry.DefaultAlias,
             DefaultMaxTurns = dto.DefaultMaxTurns,
             DefaultPermissionMode = dto.DefaultPermissionMode ?? "bypassPermissions",
             WorktreeStrategy = dto.WorktreeStrategy ?? "sibling",

src/ClaudeDo.Worker/Planning/WindowsTerminalPlanningLauncher.cs

@@ -7,13 +7,14 @@
 // No cmd /k shim — arbitrary initial-prompt content would be re-parsed by cmd.exe otherwise.
 
 using System.Diagnostics;
+using ClaudeDo.Data.Models;
 
 namespace ClaudeDo.Worker.Planning;
 
 public sealed class WindowsTerminalPlanningLauncher : IPlanningTerminalLauncher
 {
     private const string AllowedTools = "mcp__claudedo__*,Read,Grep,Glob,WebFetch,WebSearch,Skill";
-    private const string Model = "claude-opus-4-7";
+    private const string Model = ModelRegistry.PlanningAlias;
 
     private readonly string _wtPath;
     private readonly string _claudePath;