Fix songrec timeouts

[Coquelicots]

Summary

When using Recognize music, the script would previously wait the full 30-second timeout even if the audio recording failed immediately (due to an invalid audio source)

Testing

• inir restart && inir logs — no errors
• Tested the specific feature path that changed
• Both panel families checked (if shared code changed)

[snowarch]

Thanks @Coquelicots — the PAREC_PID liveness guard is a genuine fix and I'd like to take it. Two asks:

1. It no longer applies cleanly to current main/prerelease — needs a rebase.
2. The match-condition change (from "matches": [ + length to a bare "track" grep) is a behavior change I'd rather not bundle with the timeout fix — could you drop that and keep just the early-exit guard?

Then I'll pull it in.