feat: all AI formats printable, crop-vs-border rule, mobile layout, Passbilder rename

Print now offers every format the AI pipeline knows (9x13 to 60x90, DIN A6-A2,
squares, poster/frame sizes to 70x100, and the screen ratios as physical sizes).
When a picture does not match the target ratio the user picks per image between
cropping to fill and keeping the whole picture on a border colour - never a
stretch. The module is called Passbilder now; /druck redirects.

Fixes two real defects: sharp runs extend after resize, so padded cells came out
oversized (a 35x45 mm cell became 35x171 mm with a border), and the grid packer
rotated a single portrait photo just because more would fit sideways.

Mobile: cards become rows, touch targets ~40px, crop editor as a bottom sheet.
Verified at 390/820/1440px - all three produce the same PDF.

tests/printlayout.test.ts

@@ -132,3 +132,23 @@ test('Formattabellen sind konsistent', () => {
   assert.equal(labelMm(35, 45), '35 × 45 mm');
   assert.equal(labelMm(120, 150), '12 × 15 cm');
 });
+
+test('Die gewählte Ausrichtung bleibt, wenn sie nicht mehr Bogen kostet', () => {
+  // Ein einzelnes Passbild darf nicht quer gelegt werden, nur weil hochkant
+  // mehr auf den Bogen passen würden.
+  const res = layout([{ id: 'p', wMm: 35, hMm: 45, count: 1, allowRotate: true }], A4);
+  assert.equal(res.pages[0].placements[0].rotated, false);
+  assert.equal(res.pages[0].placements[0].w, 35);
+
+  // 25 × 15 cm auf A4 hoch: quer ist es zu breit (250 > 200 mm Nutzbreite),
+  // gedreht passt es — dann muss gedreht werden.
+  const gross = layout([{ id: 'g', wMm: 250, hMm: 150, count: 1, allowRotate: true }], A4);
+  assert.equal(gross.pages.length, 1);
+  assert.equal(gross.pages[0].placements[0].rotated, true);
+  assert.equal(gross.pages[0].placements[0].w, 150);
+
+  // Ohne Dreherlaubnis bleibt es liegen und wird als „passt nicht" gemeldet.
+  const stur = layout([{ id: 'g', wMm: 250, hMm: 150, count: 1, allowRotate: false }], A4);
+  assert.equal(stur.pages.length, 0);
+  assert.equal(stur.unplaced.length, 1);
+});