v3.3.0

Unified API: decode.mp3(buf), decode.mp3.stream()
Streaming decoder mirrors audio-encode pattern
M4A streaming support (buffers chunks for moov atom)
Safari ReadableStream compatibility
Monorepo: all @audio/* decoders in packages/
Updated TypeScript declarations
Deprecated decodeStream, decoders exports (still work)

Full Changelog: v3.1.0...v3.3.0