feat: Add Simple Mirror and Object Tools

[Limitex]

This release candidate introduces several major new features, significant enhancements to the developer experience, and important bug fixes. The primary additions are the Simple Mirror System and the ObjectButton/ObjectToggle System, which provide powerful new tools for world creators.

🚀 Features

• New: Simple Mirror System (feat: create simple mirror #51)

  • Added a user-friendly, high-performance mirror prefab for easy integration.
  • Includes a PlayerOnlyMirrorCutoutShader that renders only player reflections.
  • Features a MirrorManager script (UdonSharp) to switch between High-Quality (HQ) and Low-Quality (LQ) modes at runtime.

• New: ObjectButton & ObjectToggle System (feat: Implement Object Toggles and Buttons #57)

  • Introduced a flexible system for managing the active state of multiple GameObjects with network sync support.
  • ObjectButton: Triggers state changes (e.g., invert, shift) for a group of objects.
  • ObjectToggle: Binds the active state of objects to a UI Toggle's isOn property.
  • Editor Enhancements:
    • Added ObjectToggleBuildProcessor to automatically link triggers to their master component at build time, eliminating manual setup.
    • Created a ReferencedByDrawer utility in the inspector to easily see which triggers are referencing the component.

✨ Enhancements

• Improved Editor Experience (chore: Refine Component Editor Visibility and Instantiation Rules #49)
  • Internal and manager-type components (e.g., DialogManager) are now hidden from the "Add Component" menu to reduce clutter and prevent misuse.
  • Added [DisallowMultipleComponent] to core manager scripts to enforce correct usage patterns.

🐛 Bug Fixes

• UI Provider Transform Reset (fix: Reset RectTransform offsets for UI Providers on creation #50)
  • Fixed a bug where UI Providers (Dialog, Toast) instantiated from the context menu would not have their RectTransform offsets reset, causing incorrect positioning.
• Toggle Initialization & Sync
  • Resolved several issues with the ObjectToggle system, including incorrect Udon sync modes and improper handling of initial state values, ensuring reliable behavior.

🔧 Maintenance

• VPM Workflow Update (delete: vpm workflow #46)
  • The package update workflow has been changed to use vpm.limitex.dev/index.json. The previous PAT_TOKEN-based workflow has been removed.
• Repository Housekeeping
  • Updated GitHub Actions workflows for better CI/CD. (actions: update actions #55)
  • Added standard templates for Issues and Pull Requests. (feat: github templates #58, github: merge pr template #60)
  • Updated README.md and THIRD-PARTY-NOTICES.md. (chore: update readme.md #56)

[Copilot]

Pull Request Overview

This PR introduces new features for Mono UI including a new Simple Mirror System and ObjectButton/ObjectToggle system, along with enhancements to the developer experience and several bug fixes. Key changes include the addition of the PlayerOnlyMirrorCutoutMaterial, improvements to the UI context menus to support mirror prefab spawning with resettable offsets, and updates to editor scripts and GitHub workflows for build processing and release management.

Reviewed Changes

Copilot reviewed 56 out of 56 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Runtime/Assets/Material/PlayerOnlyMirrorCutoutMaterial.mat	Added new mirror material with custom shader properties
Runtime/Assets/Material.meta	Added meta file for the material asset
README.md	Updated sample list to include the new Simple Mirror feature
EditorOnly/Scripts/Components/*.cs	Added AddComponentMenu attributes to improve component organization
Editor/Scripts/Utils/ReferencedByDrawer.cs (+ meta)	Introduced utility for displaying component references in the inspector
Editor/Scripts/Inspector/ObjectToggleEditor.cs & ObjectButtonEditor.cs (+ meta)	Added custom editors that leverage the ReferencedByDrawer for easier reference tracing
Editor/Scripts/ContextMenu/GameObjectContextMenu.cs	Updated spawn prefab methods to reset RectTransform offsets and added support for spawning the Simple Mirror prefab
Editor/Scripts/Build/ObjectToggleBuildProcessor.cs (+ meta)	Implemented build-time linking for ObjectToggle triggers
.github/workflows/* & ISSUE_TEMPLATE/*	Updated workflows and issue templates to streamline CI/CD and bug/feature reporting

Comments suppressed due to low confidence (1)

Editor/Scripts/ContextMenu/GameObjectContextMenu.cs:117

• The MenuItem label 'Simpe Mirror' is misspelled. Please correct it to 'Simple Mirror' to ensure consistency and clarity.

[MenuItem(MENU_SAMPLE + "Simpe Mirror", false, SAMPLE_PRIORITY + 5)]