PLN: "ok lets list my demands not handled yet and ensure we track all tasks and
ergonomic issues to improve". So the register: every open ask with his own words
attached, stable IDs, grouped by what unblocks what — and the honest note that
ONE probe run at the desk unblocks five screen items at once.

The fix came out of writing it. nouvelle_couleur.tidal carries a parked tempo
knob, a commented `# cps ((range 60 180 "^29")/60/4)`, and the mapped-set
scanner read commented lines — so B1 glowed on a board whose oldest rule is
"dark = unmapped". parse_context already skipped comments; parse_track now does
too. Live: 12 controls -> 11, 18 lit cells -> 17, B1 dark. Uncomment the line
and the next follow tick (under a second) lights it and the tempo readout
appears with it.

Also recorded: the v2 lcxl-leds-watch service has been logging "no LCXL
sequencer port" every 30 s since 22:39 — its name regex cannot match "LCXL3 1",
so it has never touched the v3 board. It was my prime suspect for the
paint-reset mystery and it is innocent; that mystery is reopened with no
suspect. The Midi-Through to SuperCollider re-add is explained though:
MIDIIn.connectAll, re-running on sample reload, exactly as
midi-autoconnect.sh's own header warned it would.