refactor!: rename the project from Monitor to MoShiro

Namespaces, assemblies, projects and directories, the solution, binaries,
images, systemd units, config paths, environment variables, protocol method
names, the media type and the raw chunk magic all move to MoShiro/moshiro.
Existing data and deployments are not compatible and must be recreated.
Also fix the architecture tests after the solution layout change and make
the update tests independent of their order.

backend/shared/MoShiro.Measurement/Blocks/BlockBase.cs

@@ -0,0 +1,105 @@
+using System.Net;
+using MoShiro.Protocol;
+
+namespace MoShiro.Measurement;
+
+/// <summary>积木的公共部分：环境、参数、把行切成列块交出去。</summary>
+public abstract class BlockBase : IBlock
+{
+    protected BlockBase(BlockEnv env, BlockSpec spec)
+    {
+        Env = env;
+        Spec = spec;
+    }
+
+    public virtual long Produced => 0;
+
+    protected BlockEnv Env { get; }
+
+    protected BlockSpec Spec { get; }
+
+    public abstract Task RunAsync(CancellationToken ct);
+
+    public virtual int Flush(FlushMode mode, long peerProduced = 0) => 0;
+
+    public virtual RowStore? Records(string streamName) => null;
+
+    protected IPEndPoint PeerEndpoint(int port) => new(Env.PeerAddress!, port);
+
+    /// <summary>交出一个流的行；起点和时长取自时间列 <paramref name="timeColumn"/> 的首尾（本侧的单调时钟，微秒）。</summary>
+    protected void Ship(RawStream stream, string timeColumn, IReadOnlyList<RawStream>? extra = null, IReadOnlyDictionary<string, System.Text.Json.JsonElement>? parameters = null)
+    {
+        RawColumn? time = stream.Find(timeColumn);
+        long first = stream.Count > 0 && time is not null ? time.Values[0] : Env.Clock.NowUs();
+        long last = stream.Count > 0 && time is not null ? time.Values[stream.Count - 1] : first;
+        List<RawStream> streams = [stream];
+        if (extra is not null)
+        {
+            streams.AddRange(extra);
+        }
+
+        Env.Fragments!.Ship(Spec.KindId, Spec.Scope, streams, parameters ?? Spec.Params.Values, Env.Clock.UtcMsAt(first), (int)((last - first) / 1000), Spec.Port);
+    }
+
+    /// <summary>什么也不做、一直等到取消（监听方里不需要自己运行逻辑的积木）。</summary>
+    protected async Task WaitUntilCancelledAsync(CancellationToken ct)
+    {
+        try
+        {
+            await Task.Delay(Timeout.InfiniteTimeSpan, Env.Time, ct);
+        }
+        catch (OperationCanceledException)
+        {
+            // 被停止
+        }
+    }
+}
+
+/// <summary>
+/// 拨号方作为行的主导方时记录的行：行按键（序号）追加，回复到达时按键回填列，到点把已经稳定的行从游标处切下来交出去。
+/// 环形缓冲被覆盖的行（交出太慢）直接跳过。
+/// </summary>
+internal sealed class DriverLog
+{
+    private readonly object _gate = new();
+    private long _cursor;
+
+    public DriverLog(StreamSpec spec, Side driver, int capacity)
+    {
+        Store = new RowStore(spec, driver, capacity);
+        Spec = spec;
+    }
+
+    public RowStore Store { get; }
+
+    public StreamSpec Spec { get; }
+
+    public long Count => Store.NextKey;
+
+    /// <summary>取出游标之后已经稳定的行：<paramref name="settled"/> 为 null 或 <paramref name="all"/> 时取全部。</summary>
+    public RawStream? Take(Func<long, bool>? settled, bool all, int maxRows = int.MaxValue)
+    {
+        long from;
+        long to;
+        lock (_gate)
+        {
+            from = _cursor;
+            to = from;
+            long end = Store.NextKey;
+            while (to < end && to - from < maxRows && (all || settled is null || !Store.Contains(to) || settled(to)))
+            {
+                to++;
+            }
+
+            if (to == from)
+            {
+                return null;
+            }
+
+            _cursor = to;
+        }
+
+        RawStream stream = Store.Cut(from, to, includeKey: Spec.Key is not null);
+        return stream.Count == 0 ? null : stream;
+    }
+}