#16 was ranked "bonus, can be 80/20ed". The cheat-sheet IS the 80/20: at OPAL
he is alone in a field with a laptop and a 48-cell control surface. The FOH
chain and the go-bag he can hold in his head. Twelve columns of CC numbers he
cannot.

GENERATED, NOT AUTHORED. A hand-written card is a copy of tools/lcxl_grid.py,
and a copy drifts silently the moment the grid changes — which it did twice
this fortnight. This reads the grid and the setlist directly, so a card that
disagrees with the rig is impossible by construction. `--md` rewrites
docs/GIG-CHEATSHEET.md; regenerate rather than edit.

THE EMERGENCY BOX GOES FIRST
The moment you reach for this page is the moment something is wrong. A card
that opens with a reference table makes you read past your own panic to get to
the answer. So the top of the page is eight failure modes and their remedy,
each one a symptom he has actually hit: LEDs dark but knobs alive (USB OUT
endpoint stall — replug), a track making no sound (it did not compile; one
block, one error), an orbit that will not die (it is the previous track's
pattern), mixer silent while Tidal looks fine (a fader; the desk wins on touch).

TWO LAYOUT BUGS THE FIRST RENDER CAUGHT
  * the title bar was hand-padded and off by one — now ljust'd like every
    other line, so it cannot drift again
  * gF3 and gM3 hold 7 and 8 orbits, which overran a side-by-side two-column
    family layout and silently misaligned the block. Stacked instead.

AND ONE COLUMN DELETED FOR SAYING NOTHING
The set table first carried a "roles" column. Every track in the set carries
kick+perc+bass+lead, so it printed the identical string 13 times and pushed the
page past 80 columns. Replaced with the orbits each track does NOT declare —
which is the fact worth having on stage, because an undeclared orbit is not
silent, it keeps playing whatever the previous track left there. That column is
the transition ghost list (#77), per track, at a glance. It also shows `perfect`
declaring all 12, i.e. the one track in the set that cannot inherit a ghost.

Verified: 0 lines over 80 columns, renders from a clean checkout, and the
family map printed matches lcxl_grid.filter_family/mute_family exactly.