docs: fold Craig's spec notes and a review finding into the input-side spec

Craig left four notes on the draft. This closes all of them.

He ratified two open decisions: don't rebuild push-to-talk, since the source-mute is the safety property, and read /proc/asound directly for the kernel tier. Both close DONE.

He flagged a naming collision. The doctor keys can't be OUTPUT/INPUT, because the CONTROLS section already carries INPUT/OUTPUT mute toggles. They become SPEAKERS and MICROPHONE, with a distinct diagnostic style held consistent across every panel. I recorded it as a new decision and left the visual treatment open for his eye.

He asked for a failure-modes map, so the spec gains a table of every fault by probe tier with its verdict and remedy, output and input together.

A spec-review had also left two blocking findings. The kernel-to-graph one was real: ALSA card ids and PipeWire node names are different namespaces, so "compare the sets" was undefined. I took the reviewer's coarse rule as the v1 definition. mic-unrecognized fires when the kernel capture set is non-empty and the graph has zero non-monitor hardware sources. Per-device correlation is logged as vNext. That finding closes. The open-decisions one stays until the last three land.

0 files changed, 0 insertions, 0 deletions