fix: bundle portaudio.dll directly in repo for Windows

fix: extract portaudio.dll to exe directory instead of temp

feat: embed portaudio.dll in Windows exe, auto-extract on run

ci: static link PortAudio for Windows (no DLL needed)

ci: add Windows build with dynamic PortAudio linking

代码重构，linux windows 复用防抖算法

ci: revert to Linux-only release, Windows needs local build

fix: add windows to main.go build tags

ci: fix Windows PKG_CONFIG_PATH for PortAudio

feat: add Windows support with PortAudio microphone detection

ci: remove macOS build, only release Linux binary

声音去抖

fix: configure git before setup-go for private deps

fix: correct PortAudio package name and GOPRIVATE for macOS

feat: add release workflow for macOS + Linux