Optimize agents related prompt file (#639)

Author: Kyle-Ye

.github/dule-test.prompt.md .claude/commands/add_dual_test_case.md.github/dule-test.prompt.md renamed to .claude/commands/add_dual_test_case.md

@@ -1,4 +1,4 @@
-# OpenSwiftUI Copilot Test Authoring Rules
+# OpenSwiftUI DualTests Rules
 
 This file documents precise rules and templates for writing Tests and DualTests used across the OpenSwiftUI repository. Follow these rules exactly when generating new test cases.
 

.github/format.prompt.md .claude/commands/format_swiftinterface.md.github/format.prompt.md renamed to .claude/commands/format_swiftinterface.md

@@ -18,6 +18,7 @@ Example/Example.xcodeproj/xcshareddata
 __Snapshots__
 Example/ReferenceImages/**/*.png
 
-.claude
+.claude/*
+!.claude/commands/
 .docs
 gh-pages

.github/copilot-instructions.md

@@ -0,0 +1,103 @@
+# AGENTS.md
+
+This file provides guidance to AI agents when working with code in this repository.
+
+## Project Overview
+
+OpenSwiftUI is an open source implementation of Apple's SwiftUI framework, designed to:
+- Build GUI apps on non-Apple platforms (Linux, Windows)  
+- Diagnose and debug SwiftUI issues on Apple platforms
+- Maintain API compatibility with SwiftUI
+
+This project is in active development and contains multiple Swift packages with extensive environment-based configuration.
+
+## Build Commands
+
+### Standard Build
+```bash
+./Scripts/build.sh
+# Or directly: swift build
+```
+
+### Build with Library Evolution
+```bash
+./Scripts/build_swiftinterface.sh
+# Generates module interfaces for library evolution
+```
+
+### Environment Variables
+The build system uses many environment variables for configuration:
+- `OPENSWIFTUI_BUILD_FOR_DARWIN_PLATFORM`: Build for Darwin platforms (default: true on macOS)
+- `OPENSWIFTUI_DEVELOPMENT`: Enable development mode features
+- `OPENSWIFTUI_USE_LOCAL_DEPS`: Use local dependency paths instead of remote repos
+- `OPENSWIFTUI_LIBRARY_EVOLUTION`: Enable library evolution support
+- `OPENSWIFTUI_COMPATIBILITY_TEST`: Run compatibility tests with SwiftUI
+
+## Test Commands
+
+### Run All Tests
+```bash
+swift test
+```
+
+### Run Specific Test Target
+```bash
+swift test --filter OpenSwiftUICoreTests
+swift test --filter OpenSwiftUICompatibilityTests
+swift test --filter OpenSwiftUISymbolDualTests
+```
+
+### Test with Coverage
+```bash
+swift test --enable-code-coverage
+```
+
+### List Available Tests
+```bash
+swift test --list-tests
+```
+
+## Dependencies Setup
+
+The project requires cloning additional repositories in the same parent directory:
+
+```bash
+cd ..
+git clone https://github.com/OpenSwiftUIProject/OpenAttributeGraph.git
+git clone https://github.com/OpenSwiftUIProject/OpenRenderBox.git
+git clone https://github.com/OpenSwiftUIProject/DarwinPrivateFrameworks.git
+```
+
+## Architecture
+
+### Core Modules
+
+1. **OpenSwiftUI_SPI**: System Programming Interface and low-level utilities
+2. **OpenSwiftUICore**: Core framework implementation with animations, layout, graphics
+
+--------------------------------------------------------------------------------
+## Documentation
+
+Use swift-docc format when writing documentation.
+
+Follow SwiftUI documentation style.
+
+Since CDDefaultCodeListingLanguage is Swift, stop using ```swift and ``` to wrap Swift code example in documentation. Instead just use a new line + 4 space indent.
+
+Example:
+
+```
+    /// Example code:
+    ///
+    ///     @main
+    ///     struct MyApp: App {
+    ///         var body: some View {
+    ///             WindowGroup {
+    ///                 ContentView()
+    ///             }
+    ///             .environment(ProfileService.currentProfile)
+    ///         }
+    ///     }
+    ///
+    public protocol App {}
+```