M1: add networked rigged player avatar (run-around character)

- Import Hodaart Low Poly Character Collection 3 (humanoid-rigged, LFS)
- PlayerAvatar.cs: owner-authoritative CharacterController movement, animation
  derived from measured speed on every client (no NetworkAnimator needed)
- OwnerAuthNetworkTransform.cs: owner-authoritative NetworkTransform
- PlayerLocomotion.controller: Idle/Walk/Run 1D blend tree on Speed (reuses
  Hodaart clips)
- PlayerCharacter.prefab (Character 01 + CC + NetworkObject + owner NT +
  PlayerAvatar + Animator w/ humanoid avatar); registered as PlayerPrefab
- Verified in play: spawns, visible, Idle pose (rig animates), owner-auth

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/Hodaart/HodaartLowPolyCharacterCollection3/Scripts/Editor/HodaartDependencyInstaller.cs

@@ -0,0 +1,102 @@
+using System.IO;
+using UnityEditor;
+
+namespace Hodaart.LowPolyCharacterCollection3.Editor
+{
+    /// <summary>
+    /// Checks whether the Input System package is installed and informs the user
+    /// if it is required by this asset.
+    /// </summary>
+    [InitializeOnLoad]
+    internal static class HodaartDependencyInstaller
+    {
+        private const string PackageId = "com.unity.inputsystem";
+        private const string ActiveInputHandlerKey = "activeInputHandler:";
+        private const string EditorPrefKey =
+            "Hodaart.LowPolyCharacterCollection3.DependencyChecked";
+
+        static HodaartDependencyInstaller()
+        {
+            // Only run once per project
+            if (EditorPrefs.GetBool(EditorPrefKey, false))
+                return;
+
+            EditorPrefs.SetBool(EditorPrefKey, true);
+
+            if (!IsInManifest(PackageId))
+            {
+                ShowInstallMessage();
+                return;
+            }
+
+            PromptInputHandlingIfNeeded();
+        }
+
+        private static bool IsInManifest(string packageId)
+        {
+            string path = Path.GetFullPath("Packages/manifest.json");
+
+            if (!File.Exists(path))
+                return false;
+
+            return File.ReadAllText(path).Contains($"\"{packageId}\"");
+        }
+
+        private static void ShowInstallMessage()
+        {
+            bool open = EditorUtility.DisplayDialog(
+                "Input System Required",
+                "This asset requires Unity's Input System package.\n\n" +
+                "Please install it using:\n\n" +
+                "Window → Package Manager\n" +
+                "→ Unity Registry\n" +
+                "→ Input System\n\n" +
+                "After installation, restart Unity if requested.",
+                "Open Package Manager",
+                "Later");
+
+            if (open)
+                EditorApplication.ExecuteMenuItem("Window/Package Manager");
+        }
+
+        private static void PromptInputHandlingIfNeeded()
+        {
+            if (!IsUsingOldInputManagerOnly())
+                return;
+
+            bool open = EditorUtility.DisplayDialog(
+                "Input System Detected",
+                "The Input System package is installed.\n\n" +
+                "Your project is still using the old Input Manager.\n\n" +
+                "For this asset to work correctly, set Active Input Handling to:\n\n" +
+                "• Both\nor\n• Input System Package (New)",
+                "Open Project Settings",
+                "Later");
+
+            if (open)
+                SettingsService.OpenProjectSettings("Project/Player");
+        }
+
+        private static bool IsUsingOldInputManagerOnly()
+        {
+            string path = Path.GetFullPath("ProjectSettings/ProjectSettings.asset");
+
+            if (!File.Exists(path))
+                return false;
+
+            foreach (string line in File.ReadAllLines(path))
+            {
+                string trimmed = line.Trim();
+
+                if (!trimmed.StartsWith(ActiveInputHandlerKey))
+                    continue;
+
+                string value = trimmed.Substring(ActiveInputHandlerKey.Length).Trim();
+
+                return value == "0";
+            }
+
+            return false;
+        }
+    }
+}

Assets/Hodaart/HodaartLowPolyCharacterCollection3/Scripts/Editor/HodaartDependencyInstaller.cs.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: 493ff93757642094fa18618ddf98e1bd
+AssetOrigin:
+  serializedVersion: 1
+  productId: 388758
+  packageName: Low Poly Character Collection 3
+  packageVersion: 1.1
+  assetPath: Assets/Hodaart/HodaartLowPolyCharacterCollection3/Scripts/Editor/HodaartDependencyInstaller.cs
+  uploadId: 946460