check in AGNETS.md for AI

AGENTS.md

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+# VNote Agent Development Guide
+
+## Build/Lint/Test Commands
+
+* **Build**: `mkdir build && cd build && cmake .. && cmake --build . --config Release`
+* **Run Tests**: Build tests manually by enabling `add_subdirectory(tests)` in root CMakeLists.txt
+* **Run Single Test**: `cd build && ctest -R test_task` (after building tests)
+
+## C++ Code Style Guidelines
+
+* **Standards**: C++14, Qt 5/6 framework with MOC/UIC/RCC enabled
+* **Includes**: System includes first, then Qt includes, then local includes (see `main.cpp:1-29`)
+* **Namespaces**: Use `vnotex` namespace for all core classes
+* **Headers**: Use header guards (`#ifndef CLASSNAME_H`), forward declarations in headers
+* **Classes**: CamelCase, private inheritance for utility classes (Noncopyable pattern)
+* **Methods**: camelCase with getter prefixes (`getInst()`, `getThemeMgr()`)
+* **Members**: Prefix private members with `m_` (e.g., `m_jobj`)
+* **Singletons**: Use static instance pattern with `getInst()` method
+* **Qt Integration**: Use signals/slots, QObject inheritance, Q_OBJECT macro
+* **Memory**: Use Qt smart pointers (QScopedPointer, QSharedPointer)
+* **Config**: Access via ConfigMgr singleton, JSON-based hierarchical config
+* **Architecture**: Follow layered structure - core/ for logic, widgets/ for UI
+* **Error Handling**: Use Qt patterns and custom Exception classes
+
+## Architecture Notes
+* Core singleton: VNoteX coordinates all managers (ThemeMgr, TaskMgr, NotebookMgr, BufferMgr)  
+* Refer to .github/copilot-instructions.md for complete architecture overview