test: add incr corpus

fuzzers/corpora/viewers/preview-incr_01.typ

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+#let text_base_size=10pt
+#let text_h1_size=20pt
+#let header_size_increment=3pt
+#set page(
+  paper: "a4",
+  header: align(right)[
+    Multi-purpose Combat Chassis [FALKEN]
+  ],
+  numbering: "1",
+  margin: (x:20mm, y:12.7mm)
+)
+
+#set par(justify: true)
+#set text(
+  font: "LXGW WenKai",
+  size: text_base_size,
+  lang: "zh",
+)
+#let emp_block(body,fill:luma(230),stroke:orange) = {
+  block(
+    width:100%,
+    fill: fill,
+    inset: 8pt,
+    radius: 0pt,
+    stroke: (left:(stroke+3pt),right:(luma(200)+3pt)),
+    body,
+  )
+}
+
+#let booktab() = {
+  block(
+    width: 100%,
+    [
+      #line(length: 100%,stroke: 3pt+luma(140))
+      #move(line(length: 100%), dx: 0pt, dy: -9pt)
+    ]
+  )
+  v(0pt, weak: true)
+}
+
+#show heading: it => block[
+  #let heading_size=text_h1_size - (it.level - 1) * header_size_increment
+  #set text(size: heading_size, font: "HarmonyOS Sans SC")
+  #emph(it.body)
+]
+
+#let img = "/assets/files/tiger.jpg"
+
+= #lorem(4)
+
+#outline(title:none, indent:auto, )
+
+#booktab()
+
+#lorem(5000)
+
+#pagebreak()
+== #lorem(3)
+
+#emp_block()[
+#lorem(100)
+]
+#booktab()
+
+#lorem(5000)
+
+#pagebreak()
+== 隼的轻武器
+
+#booktab()
+
+#lorem(5000)
+
+#let images_rkg3=("tiger.jpg","tiger.jpg")
+
+#align(center)[
+  #stack(
+    dir: ltr,
+    ..images_rkg3.map(n=>align(center)[#image(img, height:15%)])
+  )
+]
+
+#lorem(300)
+
+#let images_pistol=("tiger.jpg","tiger.jpg")
+#let cell = rect.with(
+  inset: 8pt,
+  fill: rgb("e4e5ea"),
+  width: 100%,
+  radius: 6pt
+)
+#grid(
+  columns: (1fr,1fr),
+  rows: (),
+  gutter: 3pt,
+  ..images_pistol.map(n=>align(center)[#image(img, width:20%)])
+)
+
+#lorem(450)
+
+#figure(
+  image(img, width: 50%)
+)
+
+#lorem(450)
+
+#figure(
+  image(img, width: 50%)
+)
+
+#lorem(300)
+
+=== 电磁枪
+
+#lorem(450)
+
+#pagebreak()
+== 武器舱和背部重武器
+
+#booktab()
+
+#lorem(300)
+
+#figure(
+  image(img, width: 60%),
+  caption: [30mm Rapid Railgun with Extended Barrel, also retrofitted as 2nd stage rail on Arclight]
+)
+
+#lorem(5000)
+
+#figure(
+  image(img, width: 60%),
+  caption: [TGLS/Tactical Graviton Laser(Lance) System]
+)
+
+#lorem(1000)
+
+#figure(
+  image(img, width: 60%),
+  caption: [炮管展开60°的状态]
+)
+
+#lorem(300)
+
+#figure(
+  image(img, width: 80%),
+  caption: [4Sure Ballistics Man-Portable ASAT Missile]
+)
+
+#lorem(500)
+
+#pagebreak()
+== 辅助机 —— "FRAMER"
+
+#booktab()
+
+#lorem(500)