a1eb465142
Replace Data/AudioPacket allocations with raw pointer callbacks through the entire audio pipeline. Ring buffer hands out direct pointers (or linearizes into a pre-allocated scratch buffer on wrap-around), converter accepts/emits pointers via its cached buffers, and output handler writes to stdout via write(2) with EINTR handling. Remove AudioPacket (dead code), --flush flag (no-op with raw write(2)). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>