Browser-only PNG Squeeze codec 4.0.0, GPL-3.0-or-later.
Install Rust and run: rustup target add wasm32-unknown-unknown
Then: cargo build --offline --locked --release --target wasm32-unknown-unknown
All corresponding libimagequant dependencies are included under vendor/.
Copy target/wasm32-unknown-unknown/release/pngsqueeze_wasm.wasm to public/wasm/pngsqueeze.wasm.
