Static INT8 audio encoder (Entropy calibration, MatMul-only, QOperator format — browser-compatible)

Add static INT8 audio encoder (QOperator format, browser-compatible)

Add INT8 audio encoder

GPTQ INT4 decoder_step_int4.onnx.data

GPTQ INT4 decoder_step_int4.onnx

GPTQ INT4 decoder_prefill_int4.onnx.data

GPTQ INT4 decoder_prefill_int4.onnx

Add embedding table (onnx/embed_int8_scales.bin)

Add embedding table (onnx/embed_int8.bin)

Initial upload: INT4 ONNX (encoder + prefill + step) + tokenizer + examples + inference.py