Function createBvcDecoder

createBvcDecoder(opts?: CreateBvcDecoderOptions): Promise<Decoder>
Detect the runtime, pick the best supported BVC backend (worker pool when available, else in-process), and return a ready Decoder.
Parameters
- opts: CreateBvcDecoderOptions = {}
  See CreateBvcDecoderOptions: requested to force a backend, caps to override detection, poolSize/spawn for the worker backend, wasmInit for wasm load overrides. All optional.
Returns Promise<Decoder>
A promise resolving to a BvcWorkerDecoder when workers are available (and not forced off), otherwise a BvcDecoder.
Throws
Rejects when the runtime lacks WASM SIMD (the BVC wasm is built with +simd128), or when requested names a backend the runtime cannot support.
Example
```
import { createBvcDecoder } from '@bitruvius/bvc';

const decoder = await createBvcDecoder();   // auto-selects the backend
const model = await decoder.open(bytes);
for await (const tile of decoder.decodeTiles(model, bytes)) {
  // upload tile to GPU
}
```
Cross-origin (CDN) use — force in-process and supply wasm bytes so no same-origin worker or asset fetch is required:
Example
```
const decoder = await createBvcDecoder({
  requested: 'cpu-wasm',                 // skip the worker pool
  wasmInit: { wasmBytes },               // bytes you already fetched
});
```