Initial commit: AtomicEngine v0.2

- Rust/WASM physics engine (grid, material, physics, render_buffer)
- 16 material types (stone, sand, water, wood, fire, lava, glass, ice, oil, acid, steam, spark, smoke + player placeholder)
- Fire system (fuel-based, flammability-scaled consumption, spread, smoke/sparks)
- Lighting system (emission, flood-fill propagation, glow, reflection)
- Per-material pixel texturing (wood grain, dirt specks, stone noise, flame variation)
- WebGL2 renderer with camera (WASD move, mouse wheel zoom)
- Native x86 debug binary (identical dimensions, FPS counter)
- Large world 1024x768 with active-region simulation (camera + 200px margin)
- UI material palette + FPS display

engine/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "atomic-engine"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[[bin]]
+name = "atomic-debug"
+path = "src/main.rs"
+
+[dependencies]
+wasm-bindgen = "0.2"
+console_error_panic_hook = "0.1"
+wee_alloc = "0.4"
+
+[profile.release]
+opt-level = "s"
+lto = true