Initial commit: AIGame Unity client with URP, HybridCLR, YooAsset and tooling.

Co-authored-by: Cursor <cursoragent@cursor.com>

AIClient/Packages/com.unity.pipeline/Editor/Commands/GameObjects/FindGameObjectsResult.cs

@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Unity.Pipeline.Models;
+
+namespace Unity.Pipeline.Editor.Commands.GameObjects
+{
+    /// <summary>
+    /// Structured result for <c>find_gameobjects</c>. WHY a dedicated envelope rather than a bare
+    /// array: it carries the match <see cref="Count"/> alongside the list so an agent can branch on
+    /// "found / not found / ambiguous" without inspecting array length, and leaves room to add query
+    /// metadata later without breaking the shape. Each entry is the same canonical
+    /// <see cref="AuthoringResult"/> identity returned by the single-object commands, so a result can
+    /// be fed straight back as an <see cref="ObjectRef"/> in a follow-up call.
+    /// </summary>
+    sealed class FindGameObjectsResult
+    {
+        /// <summary>Number of GameObjects that matched the query.</summary>
+        [JsonProperty("count")]
+        public int Count { get; set; }
+
+        /// <summary>Canonical identities of the matching GameObjects.</summary>
+        [JsonProperty("gameObjects")]
+        public List<AuthoringResult> GameObjects { get; set; } = new List<AuthoringResult>();
+    }
+}