- Mute/deafen status now goes out through clientupdate instead of
clientedit, which silently rejected client_input_muted/output_muted
since they are runtime status, not editable client properties.
- Publish client_input_hardware so other clients see "Microphone
Disabled" instead of silence while another tab holds the capture
device; track input/output hardware flags for other clients too,
and show a distinct grey "disabled" icon instead of reusing the red
"muted" one for both the tree and the info panel.
- Implement TS3's Enable/Disable/Toggle Local Mic Mute hotkeys: they
silence capture like a real mute, but never touch the published
mute status or play a sound.
- A speaker's "talking" indicator only ever cleared when its
zero-length end-of-burst voice packet arrived; if that one UDP
packet was lost, the indicator stuck until their next burst. Add a
watchdog that clears it after 200ms of silence from that speaker
regardless.