Merge pull request #1420 from thewtex/cxx-overview

docs: update C++ installation / overview

Author: thewtex

docs/cxx/installation.md

@@ -1,10 +1,56 @@
 # Installation
 
-Building WebAssembly pipelines is driven by the `itk-wasm` Node.js command line executable, which drives builds, run tests, and generates interface bindings. Install with:
+## Getting Started with create-itk-wasm
+
+The best way to get started with ITK-Wasm C++ development is using `create-itk-wasm`, which scaffolds a complete development environment. This tool sets up:
+
+- **Native C++ binary build** - Traditional compiled executables for development and testing
+- **Docker Emscripten toolchain build** - WebAssembly compilation for browser environments
+- **WASI toolchain build** - WebAssembly System Interface for server-side and Node.js execution
+- **Binding infrastructure** - Automatic generation of TypeScript and Python language bindings
+
+To create a new ITK-Wasm project, install Node.js and Docker, then run:
 
 ```sh
-npm install -g itk-wasm
+npx create-itk-wasm my-project
+cd my-project
 ```
 
-For more information and guidance on installation, see [the tutorial
-Introduction](../tutorial/hello_world?id=introduction).
+This creates a complete project structure with example pipelines and build configurations.
+
+## C++ Architecture Overview
+
+ITK-Wasm C++ pipelines are built on a robust architecture consisting of several key components:
+
+### ITKWebAssemblyInterface Module
+
+The core foundation is the `ITKWebAssemblyInterface` module, which provides:
+- Serialization and deserialization of spatial data structures to/from WebAssembly memory
+- Type-safe interfaces for images, meshes, point sets, and transforms
+- Efficient data transfer mechanisms between WebAssembly and host environments
+
+### CLI11 Integration
+
+Command-line interfaces are built using [CLI11](https://github.com/CLIUtils/CLI11), providing:
+- Modern C++ argument parsing
+- Automatic help generation
+- Type-safe parameter handling
+- Consistent interface patterns across all pipelines
+
+### Pipeline Structure
+
+Each ITK-Wasm pipeline follows a standardized pattern:
+1. Parse command-line arguments with CLI11
+2. Load input data using ITKWebAssemblyInterface
+3. Process data
+4. Serialize outputs for return to the calling environment
+
+## Learn More
+
+For comprehensive technical details and research background, see the SciPy 2024 paper:
+
+> McCormick, M., Elliott, P. (2024). ITK-Wasm: High-Performance Spatial Analysis Across Programming Languages and Hardware Architectures. Proceedings of the 23rd Python in Science Conference (SciPy 2024), 268-279. https://doi.org/10.25080/TCFJ5130
+
+## Next Steps
+
+For hands-on guidance on building your first ITK-Wasm pipeline, see [the tutorial Introduction](../tutorial/hello_world?id=introduction).