feat(worker): seed default agents on startup

src/ClaudeDo.Worker/Program.cs

@@ -38,6 +38,12 @@ var agentsDir = Path.Combine(ClaudeDo.Data.Paths.AppDataRoot(), "agents");
 Directory.CreateDirectory(agentsDir);
 builder.Services.AddSingleton(new AgentFileService(agentsDir));
 
+var defaultAgentsBundleDir = Path.Combine(AppContext.BaseDirectory, "DefaultAgents");
+builder.Services.AddSingleton(sp => new DefaultAgentSeeder(
+    defaultAgentsBundleDir,
+    agentsDir,
+    sp.GetService<Microsoft.Extensions.Logging.ILogger<DefaultAgentSeeder>>()));
+
 // QueueService: singleton + hosted service (same instance).
 builder.Services.AddSingleton<QueueService>();
 builder.Services.AddHostedService(sp => sp.GetRequiredService<QueueService>());
@@ -53,6 +59,19 @@ using (var scope = app.Services.CreateScope())
         scope.ServiceProvider.GetRequiredService<ClaudeDoDbContext>());
 }
 
+try
+{
+    var seeder = app.Services.GetRequiredService<DefaultAgentSeeder>();
+    var seedResult = await seeder.SeedMissingAsync();
+    app.Logger.LogInformation(
+        "Default agents seeded: {Copied} copied, {Skipped} already present",
+        seedResult.Copied, seedResult.Skipped);
+}
+catch (Exception ex)
+{
+    app.Logger.LogWarning(ex, "Default agent seeding failed");
+}
+
 app.MapHub<WorkerHub>("/hub");
 
 app.Logger.LogInformation("ClaudeDo.Worker listening on http://127.0.0.1:{Port} (db: {Db})",