Adds a real capability-matching decision engine: getTranscodeDecision
compares the source file's actual scanned format/channels against the
client's declared directPlayProfiles first, and only when nothing
matches does it search transcodingProfiles for a codec VibeSonic's
ffmpeg pipeline can actually encode (mp3/opus/aac), applying any
codecProfile limitations (bitrate/channel required constraints) the
client listed. canTranscode is never set true for a codec the server
has no encoder for, and canDirectPlay is never set true without a
matching client profile.
getTranscodeStream takes the opaque transcodeParams token the
decision returned (never re-derived) plus a real time offset and
streams actual transcoded audio via the existing seek-capable
transcoding.Manager.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014r98AtcBbevpscWLsfwVvv
