Mythic Masters: tome page turn bends like a cylinder and casts a shadow; the newest ink is wet (#3671 gap 3, what is left) #3717

What is left of gap 3 of the tome UI climb (#3671): "the ink soak and the page turn don't read as real ink and paper." PR #3691 took gap 3 from 3 to 4 on the ink and from 3 to 4 on the turn, by a fresh judge each time. The climb was at 7/10 after it (halved scale). These are the judges' Next lines, so the next climb round can take them as one round each.

Run each one as a climb round: shoot before, change one thing, shoot now, have a fresh judge compare the two, and post a Score: comment on the open climb issue (#3671, or the "rounds N+" issue that replaces it). The shot recipe is in apps/mythic-masters/docs/shots-2026-11-04-tome/. To freeze a turn mid-swing, pause document.getAnimations() and set currentTime. Then click .r-<tab> to turn a leaf; journey.tab() doesn't turn one.

1. The turn: the free edge bends like part of a cylinder, and its shadow falls on the page

• Today each hinge shears the free part of the leaf up a little (CURL in turnLeaf, src/page.ts). The head and foot bow, but the free edge stays straight and only the head lifts.
• Bend the outer strips (the ones nearest the free edge) like part of a cylinder, so the free edge itself arcs and the foot lifts too.
• Give the page under the leaf a soft shadow that follows the free edge and darkens as the leaf lands. castShadow in src/page.ts is the place. The judge saw no shadow at all in the frozen frames.

2. The ink: the newest letters are wet

• Today the pen is one even sweep per block (write and penMask in src/page.ts, @keyframes pen and wet in src/tome.css).
• Make the letters just behind the pen's front darker and glossier, then let them dry over about 400 ms.
• Add a small nib blot at the front of the pen.
• Make the pace uneven word by word, not one linear wipe.

Line-up rows (they hold a button) are a separate follow-up: #3692.

Part of #3671.