# Developer documentation

These guides cover NeferWL's internals and tools for development, testing and performance investigation. For configuration and desktop setup, see the [user documentation](../index.md).

- [Architecture](architecture.md): owner goroutines, GC strategy and reusable purego libraries.
- [Headless mode](headless.md): screenshots, scripted input and testing without a screen.
- [Profiling](profiling.md): CPU and allocation profiling, logging and frame statistics.
- [Repository rules](../../AGENTS.md): architecture constraints, test requirements and checks before merge.