Initial commit — Stage 0 project foundation

- Cargo workspace with engine, editor, tests crates
- oxide-editor binary stub (builds and runs cleanly)
- install.sh for Linux system installation
- README.md with logo, build and install instructions
- GPLv3 LICENSE
- .gitignore

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -0,0 +1,119 @@
+# Oxide Engine
+
+![Oxide Engine](assets/oxide.png)
+
+> **Notice:** This project was developed with the assistance of [Claude Code](https://claude.ai/code) (Anthropic's AI coding assistant).
+> All generated code, configuration, and documentation has been reviewed and tested by the author.
+> Claude Code was used as a development tool; all design decisions, requirements, and sign-offs are the author's own.
+
+A general-purpose 3D game engine written in Rust, built for simulation, non-linear gameplay, and open world experiences.
+
+---
+
+## Features (planned — see [PLAN.md](PLAN.md))
+
+- Scene graph and entity management (ECS-based)
+- Skeletal animation system
+- Rigid body physics (`rapier3d`)
+- GPU-driven particle system
+- Shader hot-reload and post-processing stack
+- Ray-traced spatial sound (wave propagation, occlusion, reverb)
+- Procedural generation (noise, heightmap terrain, biomes)
+- Open world streaming (chunking, async asset loading, LOD)
+- **In-engine editor** (`oxide-editor`) built alongside the engine
+
+---
+
+## Requirements
+
+- Rust stable toolchain (`rustup` recommended)
+- Linux (primary target; other platforms not yet tested)
+- A GPU with Vulkan or Metal support (for `wgpu`)
+
+Install Rust if you don't have it:
+
+```sh
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+```
+
+---
+
+## Building
+
+```sh
+cargo build --release
+```
+
+To build and run the editor directly:
+
+```sh
+cargo run -p oxide-editor --release
+```
+
+---
+
+## Installing (Linux)
+
+The `install.sh` script compiles the project and installs it to your system (`/usr/local`):
+
+```sh
+chmod +x install.sh
+./install.sh
+```
+
+After installation the editor is available as:
+
+```sh
+oxide-editor
+```
+
+To uninstall:
+
+```sh
+sudo rm /usr/local/bin/oxide-editor
+sudo rm -rf /usr/local/share/oxide
+```
+
+---
+
+## Running tests
+
+```sh
+cargo test
+```
+
+Lint and format checks:
+
+```sh
+cargo clippy -- -D warnings
+cargo fmt --check
+```
+
+---
+
+## Project layout
+
+```
+Oxide/
+├── assets/          # Project logos and shared assets
+├── engine/          # Core engine library (oxide-engine)
+├── editor/          # In-engine editor binary (oxide-editor)
+├── examples/        # Runnable stage examples
+├── tests/           # Integration test harness
+├── install.sh       # Build + system install script
+├── PLAN.md          # Staged development roadmap
+└── CLAUDE.md        # Context and rules for Claude Code
+```
+
+---
+
+## Development roadmap
+
+Development follows a staged plan — each stage is fully tested before the next begins.
+See [PLAN.md](PLAN.md) for the complete roadmap.
+
+---
+
+## License
+
+MIT