"The schedule" is not one document. Different people print it for different
reasons and a single layout serves none of them, so this ships three sheets
sized for their actual use scene:

- Facility day board (A4/A3 landscape, auto-picked by segment count) — time
  down the side, the facility's physical grid segments across the top, every
  booking in its own cell. This is the one that carries the grid, and the one
  that did not exist. Built to be pinned at the court entrance and read from
  a few metres away.
- Facility week board (A3 landscape) — seven days x time, segments as a badge
  per booking. The notice-board overview.
- Trainer day cards (A4 portrait, two-up, cut lines) — one pocket card per
  trainer: when, where, which segment, how many players. A trainer does not
  want an A3 off the wall.

Rendered as branded HTML and printed from the browser rather than through a
PDF library: Arabic shaping survives intact, Cairo and the academy's brand
colour render exactly, and nothing queues on the server. print-color-adjust
is set explicitly, without which browsers strip every fill and the whole
colour-coded board arrives as blank boxes.

Group colours move to a shared GroupColor palette used by both the builder
and every sheet, so a coach who learns "our group is the teal one" on the
wall sees the same teal in the app. The hues stay distinguishable in
greyscale, because plenty of academies print on a mono laser.

Bookings read as a filled, tinted cell rather than a thin coloured stripe —
a 3px rail is invisible at the distance these are actually read from.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>