refactor!: rename the project from Monitor to MoShiro [CI]

Namespaces, assemblies, solution, binaries, images, systemd units, config paths, environment variables, protocol methods and the Linux user are all renamed. Breaking: existing databases, node identities and installed units must be recreated.

backend/src/MoShiro.Backend.Application/StartupTasks.cs

@@ -0,0 +1,30 @@
+using Microsoft.Extensions.Hosting;
+
+namespace MoShiro.Backend.Application;
+
+/// <summary>
+/// 启动时最先执行：截断没有索引记录的段文件尾部、创建初始管理员、创建默认的线路任务模板。
+/// 宿主按注册顺序依次等待各个 IHostedService 启动，所以它需要最先注册。
+/// </summary>
+public sealed class StartupTasks : IHostedService
+{
+    private readonly IRawStore _raw;
+    private readonly AuthService _auth;
+    private readonly TaskService _tasks;
+
+    public StartupTasks(IRawStore raw, AuthService auth, TaskService tasks)
+    {
+        _raw = raw;
+        _auth = auth;
+        _tasks = tasks;
+    }
+
+    public async Task StartAsync(CancellationToken cancellationToken)
+    {
+        await _raw.RecoverAsync(cancellationToken);
+        await _auth.EnsureInitialAdminAsync(cancellationToken);
+        await _tasks.SeedDefaultsAsync(cancellationToken);
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+}