feat: massive AI generation

apps/backend/PlayerFaction/Api/UpsertPlayerDirectiveHandler.cs

@@ -0,0 +1,26 @@
+using FastEndpoints;
+
+namespace SpaceGame.Api.PlayerFaction.Api;
+
+public sealed class UpsertPlayerDirectiveHandler(WorldService worldService) : Endpoint<PlayerDirectiveCommandRequest, PlayerFactionSnapshot>
+{
+  public override void Configure()
+  {
+    Post("/api/player-faction/directives");
+    Put("/api/player-faction/directives/{directiveId}");
+    AllowAnonymous();
+  }
+
+  public override async Task HandleAsync(PlayerDirectiveCommandRequest request, CancellationToken cancellationToken)
+  {
+    var directiveId = Route<string?>("directiveId");
+    var snapshot = worldService.UpsertPlayerDirective(string.IsNullOrWhiteSpace(directiveId) ? null : directiveId, request);
+    if (snapshot is null)
+    {
+      await SendNotFoundAsync(cancellationToken);
+      return;
+    }
+
+    await SendOkAsync(snapshot, cancellationToken);
+  }
+}