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.Gateway/FleetGateway.cs

@@ -0,0 +1,72 @@
+using Fleet.Core;
+using Fleet.Server;
+using Microsoft.Extensions.DependencyInjection;
+using MoShiro.Backend.Application;
+using MoShiro.Protocol;
+
+namespace MoShiro.Backend.Gateway;
+
+/// <summary>
+/// Application 通往 Agent 连接的端口的实现，建立在 Fleet.Server.Link 的在线表之上。
+/// Fleet 的连接宿主依赖节点事件处理器，而事件处理器依赖 Application，Application 又依赖这个端口：
+/// 这里在调用时才解析 Fleet 的服务，打断构造期的循环依赖。
+/// </summary>
+public sealed class FleetGateway : IAgentGateway
+{
+    private readonly IServiceProvider _services;
+
+    public FleetGateway(IServiceProvider services)
+    {
+        _services = services;
+    }
+
+    private IFleetConnections Connections => _services.GetRequiredService<IFleetConnections>();
+
+    private IStateNotifier Notifier => _services.GetRequiredService<IStateNotifier>();
+
+    public IReadOnlyCollection<NodeId> OnlineAgents => [.. Connections.OnlineNodes.Where(n => n.Value.StartsWith(AgentIds.Prefix, StringComparison.Ordinal))];
+
+    public IReadOnlyCollection<NodeId> OnlineNodes => Connections.OnlineNodes;
+
+    public bool IsOnline(NodeId agent) => Connections.IsOnline(agent);
+
+    public void NotifyTaskSetChanged(NodeId agent) => Notifier.NotifyChanged(agent);
+
+    public void NotifyAllTaskSetsChanged() => Notifier.NotifyAllChanged();
+
+    public async ValueTask<Result<bool>> RunTestAsync(NodeId agent, TestRunParams run, CancellationToken ct)
+    {
+        Result<TestRunResult> result = await Connections.RequestAsync(
+            agent, MoShiroMethods.TestRun, run, MoShiroJsonContext.Default.TestRunParams, MoShiroJsonContext.Default.TestRunResult, ct);
+        if (!result.TryGet(out TestRunResult? accepted, out FleetError? error))
+        {
+            return Result<bool>.Fail(error.Code == FleetErrors.NodeOffline ? MoShiroErrors.AgentOffline : error.Code, error.Message);
+        }
+
+        return accepted.Accepted ? Result<bool>.Ok(true) : Result<bool>.Fail(MoShiroErrors.TestBusy, "the agent did not accept the test");
+    }
+
+    public async ValueTask CancelTestAsync(NodeId agent, TestId test, CancellationToken ct) =>
+        await Connections.RequestAsync(
+            agent, MoShiroMethods.TestCancel, new TestCancelParams { TestId = test }, MoShiroJsonContext.Default.TestCancelParams, MoShiroJsonContext.Default.TestRunResult, ct);
+
+    public async ValueTask<Result<bool>> DisconnectProbeAsync(NodeId agent, ProbeId probe, CancellationToken ct)
+    {
+        Result<TestRunResult> result = await Connections.RequestAsync(
+            agent, MoShiroMethods.ProbeDisconnect, new ProbeDisconnectParams { ProbeId = probe }, MoShiroJsonContext.Default.ProbeDisconnectParams, MoShiroJsonContext.Default.TestRunResult, ct);
+        if (!result.TryGet(out TestRunResult? done, out FleetError? error))
+        {
+            return Result<bool>.Fail(error.Code == FleetErrors.NodeOffline ? MoShiroErrors.AgentOffline : error.Code, error.Message);
+        }
+
+        return Result<bool>.Ok(done.Accepted);
+    }
+
+    public ValueTask DisconnectAsync(NodeId agent, string reason, CancellationToken ct) => Connections.DisconnectAsync(agent, reason, ct);
+
+    public async ValueTask NotifyUpdateOfferAsync(NodeId node, string manifest, string signature, CancellationToken ct) =>
+        await Connections.NotifyAsync(node, MoShiroMethods.UpdateOffer, new UpdateOfferParams { Manifest = manifest, Signature = signature }, MoShiroJsonContext.Default.UpdateOfferParams, ct);
+
+    public async ValueTask<bool> NotifyUpdateApplyAsync(NodeId node, CancellationToken ct) =>
+        await Connections.NotifyAsync(node, MoShiroMethods.UpdateApply, new UpdateOfferParams(), MoShiroJsonContext.Default.UpdateOfferParams, ct);
+}