feat(runtime): share chat commands and run login sequence

tests/AcDream.Headless.Tests/HeadlessPluginSessionTests.cs

@@ -31,7 +31,11 @@ public sealed class HeadlessPluginSessionTests
         string statusPath = Path.Combine(temporary.Path, "status.jsonl");
         var credential = new HeadlessCredentialSecret("fixture", "password");
         using var session = new HeadlessSessionHost(
-            Descriptor([FixtureId.ToUpperInvariant(), BrokenId], statusPath),
+            Descriptor(
+                [FixtureId.ToUpperInvariant(), BrokenId],
+                statusPath,
+                loginCommands: ["/"],
+                loginCommandDelayMs: 0),
             credential,
             diagnostics,
             new FixtureSessionOperations(),
@@ -57,7 +61,7 @@ public sealed class HeadlessPluginSessionTests
         Assert.Equal(
             [
                 "started", "pluginLoaded", "pluginFailed", "connected",
-                "characterList", "enteredWorld",
+                "characterList", "enteredWorld", "loginCommandFailed",
             ],
             EventNames(statuses));
         Assert.Equal(FixtureId, statuses[1].GetProperty("plugin").GetString());
@@ -66,6 +70,8 @@ public sealed class HeadlessPluginSessionTests
             "entry dll not found",
             statuses[2].GetProperty("error").GetString()!,
             StringComparison.OrdinalIgnoreCase);
+        Assert.Equal(0, statuses[6].GetProperty("commandIndex").GetInt32());
+        Assert.Equal("/", statuses[6].GetProperty("command").GetString());
         Assert.Contains("fixture-enabled:hasUi=False:entities=0", output.ToString());
 
         WeakReference context = Assert.Single(
@@ -231,7 +237,9 @@ public sealed class HeadlessPluginSessionTests
 
     private static HeadlessSessionDescriptor Descriptor(
         List<string> plugins,
-        string statusPath) => new()
+        string statusPath,
+        IReadOnlyList<string>? loginCommands = null,
+        int loginCommandDelayMs = 500) => new()
         {
             Id = "headless-session",
             Endpoint = new HeadlessEndpointDescriptor
@@ -255,6 +263,8 @@ public sealed class HeadlessPluginSessionTests
             },
             Plugins = plugins,
             StatusFile = statusPath,
+            LoginCommands = loginCommands is null ? null : [.. loginCommands],
+            LoginCommandDelayMs = loginCommandDelayMs,
         };
 
     private static WorldSession.EntitySpawn Spawn(uint guid, float x) => new(