chore: relicense from GPL-3.0-only to MIT

CHANGELOG.md

@@ -4,6 +4,9 @@ All notable public changes to Nexus Unity are documented here.
 
 ## [Unreleased]
 
+### Changed
+- Relicensed Nexus Unity from `GPL-3.0-only` to the `MIT` license to remove copyleft friction for commercial Unity studios. All prior contributors consented to the relicense.
+
 ## [1.4.2] - 2026-06-13
 
 ### Added

DOCUMENTATION.MD

@@ -203,7 +203,7 @@ Before release, maintainers should run a public API stress audit that compares r
 - Public repo: `https://github.com/ForkHorizon/NexusUnity.git`.
 - Package id: `com.forkhorizon.nexus.unity`.
 - Public release version: `1.4.2`.
-- License: `GPL-3.0-only`.
+- License: `MIT`.
 - Required release docs: `SECURITY.md`, `CONTRIBUTING.md`, and `RELEASE.md`.
 - Repository funding metadata lives in `.github/FUNDING.yml` and configures the GitHub Sponsor button for `Daliys`.
 - Do not ship generated caches, local agent folders, `.jules/`, `.DS_Store`, Python bytecode, or native bridge binaries without corresponding source and build instructions.

Editor/CodexLinkTester.cs

@@ -5,16 +5,16 @@ namespace UnityMCP.Editor {
     /// Provides a maintainer-only diagnostic action that runs the Codex CLI linking flow from the Nexus Unity resources panel.
     /// </summary>
     /// <remarks>
-    /// The action can modify the local Codex configuration on the developer machine by delegating to
-    /// <see cref="MCPCliInstaller.LinkToCodex"/>, and writes progress to the Nexus diagnostics log category.
+    /// This is a thin troubleshooting wrapper: it logs start and finish messages to the Unity Console and delegates the actual
+    /// linking work — including any local Codex/MCP client configuration changes — to <see cref="MCPCliInstaller.LinkToCodex"/>.
     /// </remarks>
     public static class CodexLinkTester {
         /// <summary>
-        /// Runs the Codex integration link diagnostic and records start and finish messages in the Unity Console.
+        /// Runs the Codex integration link diagnostic, logging start and finish messages to the Unity Console.
         /// </summary>
         /// <remarks>
-        /// This method is intended for manual troubleshooting from the advanced diagnostics UI and may update local MCP client
-        /// configuration files through the Codex installer helper.
+        /// Intended for manual troubleshooting from the advanced diagnostics UI. The actual linking and any local MCP client
+        /// configuration changes are performed by <see cref="MCPCliInstaller.LinkToCodex"/>; this method itself only logs and delegates.
         /// </remarks>
         public static void TestLink() {
             NexusEditorLog.Log(NexusLogCategory.Diagnostics, "[Test] Starting Codex link test...", true);

README.md

@@ -1,15 +1,15 @@
 # Nexus Unity
 
 [![Tag](https://img.shields.io/github/v/tag/ForkHorizon/NexusUnity?sort=semver&label=release)](https://github.com/ForkHorizon/NexusUnity/releases/tag/v1.4.2)
-[![License: GPL-3.0-only](https://img.shields.io/badge/license-GPL--3.0--only-blue.svg)](LICENSE.md)
+[![License: MIT](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE.md)
 [![Unity](https://img.shields.io/badge/Unity-6000.0%2B-black?logo=unity)](package.json)
 [![Validate package](https://github.com/ForkHorizon/NexusUnity/actions/workflows/validate.yml/badge.svg)](https://github.com/ForkHorizon/NexusUnity/actions/workflows/validate.yml)
 
 Nexus Unity is an open source Unity Editor automation package. It runs a local JSON-RPC server inside the Unity Editor and exposes scene, asset, code, log, test, inspection, and UI automation tools to trusted local developer workflows.
 
 - Package id: `com.forkhorizon.nexus.unity`
 - Version: `1.4.2`
-- License: `GPL-3.0-only`
+- License: `MIT`
 - Public repository: `https://github.com/ForkHorizon/NexusUnity.git`
 
 ## Status
@@ -187,7 +187,7 @@ Current development keeps the public API backward-compatible while tightening sc
 | `CODE_OF_CONDUCT.md` | Community behavior expectations |
 | `RELEASE.md` | Public release checklist and smoke test |
 | `CHANGELOG.md` | Public release history |
-| `LICENSE.md` | GPL-3.0-only license text |
+| `LICENSE.md` | MIT license text |
 
 ## Contributor Validation
 

RELEASE.md

@@ -6,7 +6,7 @@ This checklist is for publishing `com.forkhorizon.nexus.unity` as an open source
 
 - Package id: `com.forkhorizon.nexus.unity`
 - Public repository: `https://github.com/ForkHorizon/NexusUnity.git`
-- License: `GPL-3.0-only`
+- License: `MIT`
 - Current public version: `1.4.2`
 - Minimum Unity version: `6000.0`
 
@@ -40,7 +40,7 @@ When preparing the release, choose the version by semantic versioning:
 1. Verify `Assets/NexusUnity/package.json`:
    - `name` is `com.forkhorizon.nexus.unity`.
    - `version` matches the Unity package version, such as `1.4.2`.
-   - `license` is `GPL-3.0-only`.
+   - `license` is `MIT`.
    - Repository, documentation, changelog, and license URLs point to the public repository.
 2. Verify docs:
    - `README.md` install command uses the public Git URL.

package.json

@@ -4,7 +4,7 @@
   "displayName": "Nexus Unity",
   "description": "Open source Unity Editor automation server for local AI tools and developer workflows.",
   "unity": "6000.0",
-  "license": "GPL-3.0-only",
+  "license": "MIT",
   "documentationUrl": "https://github.com/ForkHorizon/NexusUnity/blob/main/DOCUMENTATION.MD",
   "changelogUrl": "https://github.com/ForkHorizon/NexusUnity/blob/main/CHANGELOG.md",
   "licensesUrl": "https://github.com/ForkHorizon/NexusUnity/blob/main/LICENSE.md",

scripts/prepush-validate.sh

@@ -32,7 +32,7 @@ with open("package.json", encoding="utf-8") as handle:
 
 assert package["name"] == "com.forkhorizon.nexus.unity"
 assert package["version"]
-assert package["license"] == "GPL-3.0-only"
+assert package["license"] == "MIT"
 assert package["repository"]["url"] == "https://github.com/ForkHorizon/NexusUnity.git"
 
 dependencies = package.get("dependencies", {})