Initial procedural 3D engine setup

- Updated README.md with modern project structure and features
- Cleaned up Android build files (not needed for desktop engine)
- Restructured as procedural 3D engine with ImGui integration
- Based on Sascha Willems Vulkan framework with dynamic rendering
- Added comprehensive build instructions and camera system docs

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code when working with this Vulkan-based 3D engine codebase.
+
+## Project Overview
+
+A modern Vulkan-based 3D engine built on Sascha Willems' Vulkan examples framework, featuring procedural shape generation, scene management, and ImGui integration. The engine uses dynamic rendering (VK_KHR_dynamic_rendering) and C++20 standards.
+
+## Build System
+
+### Quick Build
+```bash
+# From project root (inihb/)
+mkdir build && cd build
+cmake .. && cmake --build . --config Release
+```
+
+### Platform-Specific
+- **Windows**: `cmake .. -G "Visual Studio 16 2019" -A x64`
+- **Linux**: `cmake .. && make -j$(nproc)`
+- **Output**: `build/bin/Release/ProceduralEngine3D.exe`
+
+### Dependencies
+- Vulkan SDK (required)
+- C++20 compatible compiler
+- CMake 3.10.0+
+
+## Architecture
+
+### Core Systems
+- **Application** (`src/core/Application.cpp`): Main Vulkan application class inheriting from VulkanExampleBase
+- **Base Framework** (`base/`): Sascha Willems' Vulkan infrastructure
+- **Scene Management** (`src/scene/`): Object and shape management
+- **UI System** (`src/ui/`): ImGui-based interface
+- **Camera System** (`base/camera.hpp`): Orbit camera with focus functionality
+
+### Vulkan Features
+- Dynamic rendering (no render passes/framebuffers)
+- Modern Vulkan 1.3+ practices
+- Multi-platform window system integration
+- Validation layer support
+
+## Key Files
+
+### Core Components
+- `src/core/Application.cpp` - Main application class with Vulkan setup
+- `base/camera.hpp` - Camera system with orbit mode and F key focus
+- `src/scene/SceneManager.cpp` - Scene graph and object management
+- `src/ui/UIManager.cpp` - ImGui integration and panels
+
+### Vulkan Infrastructure (Sascha Willems Base)
+- `base/VulkanExampleBase.h` - Main Vulkan framework
+- `base/VulkanDevice.hpp` - Vulkan device abstraction
+- `base/VulkanSwapChain.hpp` - Swapchain management
+- `base/VulkanBuffer.hpp` - Buffer utilities
+
+### Build Configuration
+- `CMakeLists.txt` - Main build configuration
+- `BUILD.md` - Detailed build instructions
+
+## Camera System
+
+### F Key Focus Feature
+The camera system supports focusing on selected objects:
+- Press **F** to focus camera on selected object
+- Automatically calculates optimal viewing distance
+- Switches to orbit mode around focused object
+- Mouse rotation orbits around the focused object center
+
+### Implementation Details
+- `camera.focusOnObject()` - Sets orbit center and optimal distance
+- `camera.updateOrbitPosition()` - Handles spherical coordinate positioning
+- Hybrid system: standard Sascha camera + orbit mode using `glm::lookAt()`
+
+## Development Guidelines
+
+### Testing Changes
+1. Build with `cmake --build . --config Release`
+2. Run from `build/bin/Release/`
+3. Use **F** key to test camera focus functionality
+4. Check console output for debug information
+
+### Vulkan Debugging
+- Enable validation layers with `-v` command line flag
+- Use `--listgpus` to see available Vulkan devices
+- Check `VK_LAYER_KHRONOS_validation` environment variable
+
+### Adding Features
+- Follow Sascha Willems patterns for Vulkan code
+- Use dynamic rendering (no render passes)
+- Implement proper buffer management and synchronization
+- Add ImGui panels for new features
+
+## Common Tasks
+
+### Build and Run
+```bash
+cd build
+cmake --build . --config Release
+bin/Release/ProceduralEngine3D.exe
+```
+
+### Shader Compilation
+Shaders are in GLSL and compiled to SPIR-V:
+- Location: `shaders/glsl/`
+- Compiled automatically during build
+- Use `glslc` or `glslangValidator` for manual compilation
+
+### Clean Build
+```bash
+rm -rf build && mkdir build && cd build
+cmake .. && cmake --build . --config Release
+```
+
+### Camera Controls
+- **Mouse**: Look around (standard mode) or orbit (after F key focus)
+- **WASD**: Move camera
+- **F**: Focus on selected object
+- **Mouse Wheel**: Zoom (in orbit mode changes distance)
+
+## Command Line Options
+
+Available options (use `--help` for full list):
+- `-v, --validation`: Enable validation layers
+- `-w, --width`: Set window width
+- `-h, --height`: Set window height
+- `-f, --fullscreen`: Start in fullscreen
+- `-g, --gpu`: Select GPU device
+- `--listgpus`: List available Vulkan devices
+
+## Technical Notes
+
+### Modern Vulkan Usage
+- Uses `VK_KHR_dynamic_rendering` extension
+- No traditional render passes or framebuffers
+- Leverages Vulkan 1.3+ features where available
+- Proper synchronization with timeline semaphores
+
+### Memory Management
+- Buffer utilities handle staging automatically
+- Proper cleanup in destructors
+- Device memory allocation through base framework
+
+### Threading
+- Single-threaded main loop
+- Vulkan command buffer recording on main thread
+- UI rendering integrated with main render loop