Update short demo demo_zh.wav with complete utterance

Update short demo demo_en.wav with complete utterance

Force update demo_zh_long.wav with complete-ending version

Force update demo_en_long.wav with complete-ending version

Add 20s long demo audio (en/zh, sampling 0.8/0.95/rep1.1); post_config sampling default for long-text stability

v2 audio fix: RMS-norm fine_local input, zero-pad decoder bits, fix ISTFT log-mag stride; refreshed demo audio (ASR-verified)

Replace with s8 build: LM s8 (Pulsar2 7.0 llm_build2), deterministic greedy generation, refreshed demo audio; drop stale lm_v1_60fix/binaries

Add zh/en demo audio samples (24kHz wav) + README audio players