Beta update.
Changes:
- Added Edges mode selector with Zero crossings as the default.
- Added No fade / trim edge mode.
- Zero crossings mode trims output sample edges to nearby zero crossings within a short 10 ms window, with a zeroed edge fallback.
- Made the default app window wider so the edge-mode dropdown fits cleanly.
Known limitations:
- macOS only
- Apple Silicon arm64 prebuilt app bundle
- not Apple-notarized; macOS may show a Gatekeeper warning
- no Windows or web version yet